SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DOperation From −40°C to 125°C
− 0.5% ...B Grade
− 1%...A Grade
− 2% . . . Standard Grade
DTypical Temperature Drift (TL431B)
− 6 mV (C Temp)
− 14 mV (I Temp, Q Temp)
DLow Output Noise
D0.2-Ω Typical Output Impedance
DSink-Current Capability ...1 mA to 100 mA
DAdjustable Output Voltage ...V
ref to 36 V
1
2
3
4
8
7
6
5
CATHODE
ANODE
ANODE
NC
REF
ANODE
ANODE
NC
TL431, TL431A, TL431B ...D (SOIC) PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
CATHODE
NC
NC
NC
REF
NC
ANODE
NC
TL431, TL431A, TL431B ...P (PDIP), PS (SOP),
OR PW (TSSOP) PACKAGE
(TOP VIEW)
TL431, TL431A, TL431B . . . LP (TO-92/TO-226) PACKAGE
(TOP VIEW)
CATHODE
ANODE
REF
NC − No internal connection
TL431, TL431A, TL431B . . . DBV (SOT23-5) PACKAGE
(TOP VIEW)
1
2
3
5
4
NC
NU
CATHODE
ANODE
REF
TL431, TL431A, TL431B ...PK (SOT-89) PACKAGE
(TOP VIEW)
REF
ANODE
CATHODE
CATHODE
ANODE
REF
TL431 . . . KTP (PowerFLEXE/TO-252) PACKAGE
(TOP VIEW)
ANODE
NU − Make no external connection NC − No internal connection
TL432, TL432A, TL432B . . . DBV (SOT23-5) PACKAGE
(TOP VIEW)
1
2
3
5
4
NC
ANODE
NC
REF
CATHODE
NC − No internal connection
TL431, TL431A, TL431B . . . DBZ (SOT23-3) PACKAGE
(TOP VIEW)
TL432, TL432A, TL432B . . . DBZ (SOT23-3) PACKAGE
(TOP VIEW)
NC − No internal connection
1
23
REF
CATHODE ANODE
1
23
CATHODE
REF ANODE
TL431A, TL431B . . . DCK (SC-70) PACKAGE
(TOP VIEW)
1
2
3
6
5
4
CATHODE
NC
REF
ANODE
NC
NC
NC − No internal connection
Copyright 2004, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerFLEX is a trademark of Texas Instruments.
!"# $"%&! '#(
'"! ! $#!! $# )# # #* "#
'' +,( '"! $!#- '# #!#&, !&"'#
#- && $##(
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description/ordering information
The TL431 and TL432 are three-terminal adjustable shunt regulators, with specified thermal stability over
applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value
between Vref (approximately 2.5 V) and 36 V, with two external resistors (see Figure 17). These devices have
a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic, making
these devices excellent replacements for Zener diodes in many applications, such as onboard regulation,
adjustable power supplies, and switching power supplies. The TL432 has exactly the same functionality and
electrical specifications as the TL431, but has different pinouts for the DBV and DBZ packages.
Both the TL431 and TL432 devices are offered in three grades, with initial tolerances (at 25°C) of 0.5%, 1%,
and 2%, for the B, A, and standard grade, respectively. In addition, low output drift vs temperature ensures good
stability over the entire temperature range.
The TL43xxC devices are characterized for operation from 0°C to 70°C, the TL43xxI devices are characterized
for operation from −40°C to 85°C, and the TL43xxQ devices are characterized for operation from −40°C to
125°C.
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description/ordering information (continued)
Vref TOLERANCE (25°C) = 2%
TL431, TL432 ORDERING INFORMATION
TAPACKAGE†ORDERABLE
PART NUMBER TOP-SIDE
MARKING‡
PDIP (P) Tube of 50 TL431CP TL431CP
SOIC (D)
Tube of 75 TL431CD
TL431C
SOIC (D) Reel of 2500 TL431CDR TL431C
SOP (PS) Reel of 2000 TL431CPSR T431
Reel of 3000 TL431CDBVR
T3C_
SOT-23-5 (DBV)
Reel of 250 TL431CDBVT T3C_
SOT-23-5 (DBV) Reel of 3000 TL432CDBVR
TAB_
Reel of 250 TL432CDBVT TAB_
0°C to 70°C
Reel of 3000 TL431CDBZR
TAC_
0°C to 70°C
SOT-23-3 (DBZ)
Reel of 250 TL431CDBZT TAC_
SOT-23-3 (DBZ) Reel of 3000 TL432CDBZR
TAB_
Reel of 250 TL432CDBZT TAB_
SOT-89 (PK) Reel of 1000 TL431CPK 43
Bulk of 1000 TL431CLP
TO-226/TO-92 (LP) Ammo of 2000 TL431CLPM TL431C
TO-226/TO-92 (LP)
Reel of 2000 TL431CLPR
TL431C
TSSOP (PW)
Tube of 150 TL431CPW
T431
TSSOP (PW) Reel of 2000 TL431CPWR T431
PDIP (P) Tube of 50 TL431IP TL431IP
SOIC (D)
Tube of 75 TL431ID
TL431I
SOIC (D) Reel of 2500 TL431IDR TL431I
Reel of 3000 TL431IDBVR
T3I_
SOT-23-5 (DBV)
Reel of 250 TL431IDBVT T3I_
SOT-23-5 (DBV) Reel of 3000 TL432IDBVR
T4A_
−40°C to 85°C
Reel of 250 TL432IDBVT T4A_
−40
°
C to 85
°
C
Reel of 3000 TL431IDBZR
TAI_
SOT-23-3 (DBZ)
Reel of 250 TL431IDBZT TAI_
SOT-23-3 (DBZ) Reel of 3000 TL432IDBZR
T4A_
Reel of 250 TL432IDBZT T4A_
SOT-89 (PK) Reel of 1000 TL431IPK 3I
TO-226/TO-92 (LP)
Bulk of 1000 TL431ILP
TL431I
TO-226/TO-92 (LP)
Reel of 2000 TL431ILPR
TL431I
†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
‡DBV/DBZ: The actual top-side marking has one additional character that designates the assembly/test site.
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description/ordering information (continued)
Vref TOLERANCE (25°C) = 2%
TL431, TL432 ORDERING INFORMATION
TAPACKAGE†ORDERABLE
PART NUMBER TOP-SIDE
MARKING‡
Reel of 3000 TL431QDBVR
TBD
SOT-23-5 (DBV)
Reel of 250 TL431QDBVT TBD
SOT-23-5 (DBV)
Reel of 3000 TL432QDBVR
TBD
−40°C to 125°C
Reel of 250 TL432QDBVT
TBD
−40
°
C to 125
°
C
Reel of 3000 TL431QDBZR
TBD
SOT-23-3 (DBZ)
Reel of 250 TL431QDBZT TBD
SOT-23-3 (DBZ)
Reel of 3000 TL432QDBZR
TBD
Reel of 250 TL432QDBZT
TBD
†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
‡DBV/DBZ: The actual top-side marking has one additional character that designates the assembly/test site.
Vref TOLERANCE (25°C) = 1%
TL431A, TL432A ORDERING INFORMATION
TAPACKAGE†ORDERABLE
PART NUMBER TOP-SIDE
MARKING‡
PDIP (P) Tube of 50 TL431ACP TL431ACP
SC-70 (DCK)
Reel of 3000 TL431ACDCKR
TBD
SC-70 (DCK) Reel of 250 TL431ACDCKT TBD
SOIC (D)
Tube of 75 TL431ACD
431AC
SOIC (D) Reel of 2500 TL431ACDR 431AC
SOP (PS) Reel of 2000 TL431ACPSR T431A
Reel of 3000 TL431ACDBVR
TAC_
SOT-23-5 (DBV)
Reel of 250 TL431ACDBVT TAC_
SOT-23-5 (DBV) Reel of 3000 TL432ACDBVR
TAB_
0°C to 70°C
Reel of 250 TL432ACDBVT TAB_
0
°
C to 70
°
C
Reel of 3000 TL431ACDBZR
TAC_
SOT-23-3 (DBZ)
Reel of 250 TL431ACDBZT TAC_
SOT-23-3 (DBZ) Reel of 3000 TL432ACDBZR
TAB_
Reel of 250 TL432ACDBZT TAB_
SOT-89 (PK) Reel of 1000 TL431ACPK 4A
Bulk of 1000 TL431ACLP TL431AC
TO-226/TO-92 (LP) Ammo of 2000 TL431ACLPM
TL431AC
TO-226/TO-92 (LP)
Reel of 2000 TL431ACLPR TL431AC
TSSOP (PW)
Tube of 150 TL431ACPW
T431A
TSSOP (PW)
Reel of 2000 TL431ACPWR
T431A
†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
‡DBV/DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description/ordering information (continued)
Vref TOLERANCE (25°C) = 1%
TL431A, TL432A ORDERING INFORMATION
TAPACKAGE†ORDERABLE
PART NUMBER TOP-SIDE
MARKING‡
PDIP (P) Tube of 50 TL431AIP TL431AIP
SC-70 (DCK)
Reel of 3000 TL431AIDCKR
TBD
SC-70 (DCK) Reel of 250 TL431AIDCKT TBD
SOIC (D)
Tube of 75 TL431AID
431AI
SOIC (D) Reel of 2500 TL431AIDR 431AI
Reel of 3000 TL431AIDBVR
TAI_
SOT-23-5 (DBV)
Reel of 250 TL431AIDBVT TAI_
SOT-23-5 (DBV) Reel of 3000 TL432AIDBVR
T4A_
−40°C to 85°CReel of 250 TL432AIDBVT T4A_
−40 C to 85 C
Reel of 3000 TL431AIDBZR
TAI_
SOT-23-3 (DBZ)
Reel of 250 TL431AIDBZT TAI_
SOT-23-3 (DBZ) Reel of 3000 TL432AIDBZR
T4A_
Reel of 250 TL432AIDBZT T4A_
SOT-89 (PK) Reel of 1000 TL431AIPK 4B
Bulk of 1000 TL431AILP
TO-226/TO-92 (LP) Ammo of 2000 TL431AILPM TL431AI
TO-226/TO-92 (LP)
Reel of 2000 TL431AILPR
TL431AI
Reel of 3000 TL431AQDBVR
TBD
SOT-23-5 (DBV)
Reel of 250 TL431AQDBVR TBD
SOT-23-5 (DBV)
Reel of 3000 TL432AQDBVR
TBD
−40°C to 125°C
Reel of 250 TL432AQDBVT
TBD
−40
°
C to 125
°
C
Reel of 3000 TL431AQDBZR
TBD
SOT-23-3 (DBZ)
Reel of 250 TL431AQDBZT TBD
SOT-23-3 (DBZ)
Reel of 3000 TL432AQDBZR
TBD
Reel of 250 TL432AQDBZT
TBD
†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
‡DBV/DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description/ordering information (continued)
Vref TOLERANCE (25°C) = 0.5%
TL431B, TL432B ORDERING INFORMATION
TAPACKAGE†ORDERABLE
PART NUMBER TOP-SIDE
MARKING‡
PDIP (P) Tube of 50 TL431BCP TL431BCP
SC-70 (DCK)
Reel of 3000 TL431BCDCKR
TBD
SC-70 (DCK) Reel of 250 TL431BCDCKT TBD
SOIC (D)
Tube of 75 TL431BCD
T431B
SOIC (D) Reel of 2500 TL431BCDR T431B
SOP (PS) Reel of 2000 TL431BCPSR TL431B
Reel of 3000 TL431BCDBVR
T3G_
SOT-23-5 (DBV)
Reel of 250 TL431BCDBVT T3G_
SOT-23-5 (DBV) Reel of 3000 TL432BCDBVR
TBC_
0°C to 70°C
Reel of 250 TL432BCDBVT TBC_
0°C to 70°CReel of 3000 TL431BCDBZR
T3G_
SOT-23-3 (DBZ)
Reel of 250 TL431BCDBZT T3G_
SOT-23-3 (DBZ) Reel of 3000 TL432BCDBZR
TBC_
Reel of 250 TL432BCDBZT TBC_
SOT-89 (PK) Reel of 1000 TL431BCPK 4C
Bulk of 1000 TL431BCLP
TO-226/TO-92 (LP) Ammo of 2000 TL431BCLPM TL431B
TO-226/TO-92 (LP)
Reel of 2000 TL431BCLPR
TL431B
TSSOP (PW)
Tube of 150 TL431BCPW
T431B
TSSOP (PW) Reel of 2000 TL431BCPWR T431B
PDIP (P) Tube of 50 TL431BIP TL431BIP
SC-70 (DCK)
Reel of 3000 TL431BIDCKR
TBD
SC-70 (DCK) Reel of 250 TL431BIDCKT TBD
SOIC (D)
Tube of 75 TL431BID
Z431B
SOIC (D) Reel of 2500 TL431BIDR Z431B
Reel of 3000 TL431BIDBVR
T3F_
SOT-23-5 (DBV)
Reel of 250 TL431BIDBVT T3F_
−40°C to 85°C
SOT-23-5 (DBV) Reel of 3000 TL432BIDBVR
T4F_
−40
°
C to 85
°
C
Reel of 250 TL432BIDBVT T4F_
Reel of 3000 TL431BIDBZR
T3F_
SOT-23-3 (DBZ)
Reel of 250 TL431BIDBZT T3F_
SOT-23-3 (DBZ) Reel of 3000 TL432BIDBZR
T4F_
Reel of 250 TL432IBDBZT T4F_
SOT-89 (PK) Reel of 1000 TL431BIPK 4I
TO-226/TO-92 (LP)
Bulk of 1000 TL431BILP
Z431B
TO-226/TO-92 (LP)
Reel of 2000 TL431BILPR
Z431B
†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
‡DBV/DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description/ordering information (continued)
Vref TOLERANCE (25°C) = 0.5%
TL431B, TL432B ORDERING INFORMATION (CONTINUED)
TAPACKAGE†ORDERABLE
PART NUMBER TOP-SIDE
MARKING‡
SOIC (D)
Tube of 75 TL431BQD
T431BQ
SOIC (D) Reel of 2500 TL431BQDR T431BQ
Reel of 3000 TL431BQDBVR
T3H_
SOT-23-5 (DBV)
Reel of 250 TL431BQDBVT T3H_
SOT-23-5 (DBV) Reel of 3000 TL432BQDBVR
T4H_
Reel of 250 TL432BQDBVT T4H_
−40°C to 125°C
Reel of 3000 TL431BQDBZR
T3H_
−40
°
C to 125
°
C
SOT-23-3 (DBZ)
Reel of 250 TL431BQDBZT T3H_
SOT-23-3 (DBZ) Reel of 3000 TL432BQDBZR
T4H_
Reel of 250 TL432BQDBZT T4H_
SOT-89 (PK) Reel of 1000 TL431BQPK 3H
Bulk of 1000 TL431BQLP
TO-226/TO-92 (LP) Ammo of 2000 TL431BQLPM T431BQ
TO-226/TO-92 (LP)
Reel of 2000 TL431BQLPR
T431BQ
†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
‡DBV/DBZ: The actual top-side marking has one additional character that designates the assembly/test site.
symbol
REF
CATHODEANODE
functional block diagram
CATHODE
REF
ANODE
+
_
Vref
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
8POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
equivalent schematic†
ANODE
REF
CATHODE
2.4 kΩ7.2 kΩ
3.28 kΩ
20 pF
4 kΩ
1 kΩ
800 Ω
800 Ω800 Ω
20 pF
150 Ω
10 kΩ
†All component values are nominal.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Cathode voltage, VKA (see Note 1) 37 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous cathode current range, IKA −100 mA to 150 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference input current range −50 µA to 10 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature, TJ 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg −65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
‡Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: Voltage values are with respect to the ANODE terminal, unless otherwise noted.
package thermal data (see Note 2)
PACKAGE BOARD θJC θJA
PDIP (P) High K, JESD 51-7 57°C/W 85°C/W
SOIC (D) High K, JESD 51-7 39°C/W 97°C/W
SOP (PS) High K, JESD 51-7 46°C/W 95°C/W
SOT-89 (PK) High K, JESD 51-7 9°C/W 52°C/W
SOT-23-5 (DBV) High K, JESD 51-7 131°C/W 206°C/W
SOT-23-3 (DBZ) High K, JESD 51-7 TBD TBD
TO-92 (LP) High K, JESD 51-7 55°C/W 140°C/W
TSSOP (PW) High K, JESD 51-7 65°C/W 149°C/W
NOTE 2: Maximum power dissipation is a function of T J(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
MIN MAX UNIT
VKA Cathode voltage Vref 36 V
IKA Cathode current 1 100 mA
TL43xxC 0 70
T
A
Operating free-air temperature range TL43xxI −40 85 °C
TA
Operating free-air temperature range
TL43xxQ −40 125
C
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431C, TL432C
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN TYP MAX
UNIT
Vref Reference voltage 2 VKA = Vref, IKA = 10 mA 2440 2495 2550 mV
VI(dev)
Deviation of reference voltage
over full temperature range
2
VKA = Vref,
IKA = 10 mA,
SOT23-3 and TL432
devices 6 16
mV
VI(dev)
over full temperature range
(see Figure 1)
2
IKA = 10 mA,
TA = 0°C to 70°CAll other devices 4 25
mV
DV
ref
Ratio of change in reference voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref −1.4 −2.7
mV
DVref
DV
KA
Ratio of change in reference voltage
to the change in cathode voltage 3 IKA = 10 mA ∆VKA = 36 V − 10 V −1 −2
mV
V
Iref Reference current 3 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞2 4 µA
II(dev) Deviation of reference current
over full temperature range
(see Figure 1) 3IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = 0°C to 70°C0.4 1.2 µA
Imin Minimum cathode current
for regulation 2 VKA = Vref 0.4 1 mA
Ioff Off-state cathode current 4 VKA = 36 V, Vref = 0 0.1 1 µA
|zKA|Dynamic impedance (see Figure 1) 1IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz 0.2 0.5 Ω
The deviation parameters Vref(dev) and Iref(dev) are defined as the differences between the maximum and minimum
values obtained over the recommended temperature range. The average full-range temperature coefficient of the
reference voltage, αVref, is defined as:
where:
∆TA is the recommended operating free-air temperature range of the device.
can be positive or negative, depending on whether minimum V ref or maximum Vref, respectively, occurs at the
lower temperature.
Example: maximum Vref = 2496 mV at 30°C, minimum Vref = 2492 mV at 0°C, Vref = 2495 mV at 25°C,
∆TA = 70°C for TL431C
Because minimum Vref occurs at the lower temperature, the coefficient is positive.
Calculating Dynamic Impedance
The dynamic impedance is defined as:
When the device is operating with two external resistors (see Figure 3), the total dynamic impedance of the circuit
is given by:
Maximum Vref
Minimum Vref
∆TA
VI(dev)
ŤaVrefŤǒppm
°CǓ+ǒVI(dev)
Vref at 25°CǓ 106
DTA
ŤaVrefŤ+ǒ4mV
2495 mVǓ 106
70°C[23 ppm
°C
|zKA|+DVKA
DIKA
|zȀ|+DV
DI[|zKA|ǒ1)R1
R2Ǔ
aVref
Figure 1. Calculating Deviation Parameters and Dynamic Impedance
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431I, TL432I
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN TYP MAX
UNIT
Vref Reference voltage 2 VKA = Vref, IKA = 10 mA 2440 2495 2550 mV
VI(dev)
Deviation of reference voltage
over full temperature range
2
VKA = Vref,
IKA = 10 mA,
SOT23-3 and TL432
devices 14 34
mV
VI(dev)
over full temperature range
(see Figure 1)
2
IKA = 10 mA,
TA = −40°C to 85°CAll other devices 5 50
mV
D
Vref
Ratio of change in reference voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref −1.4 −2.7
mV
DVref
DV
KA
Ratio of change in reference voltage
to the change in cathode voltage 3 IKA = 10 mA ∆VKA = 36 V − 10 V −1 −2
mV
V
Iref Reference current 3 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞2 4 µA
II(dev) Deviation of reference current
over full temperature range
(see Figure 1) 3IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = −40°C to 85°C0.8 2.5 µA
Imin Minimum cathode current for
regulation 2 VKA = Vref 0.4 1 mA
Ioff Off-state cathode current 4 VKA = 36 V, Vref = 0 0.1 1 µA
|zKA|Dynamic impedance (see Figure 1) 2IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz 0.2 0.5 Ω
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431Q, TL432Q
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN TYP MAX
UNIT
Vref Reference voltage 2 VKA = Vref, IKA = 10 mA 2440 2495 2550 mV
VI(dev) Deviation of reference voltage
over full temperature range
(see Figure 1) 2VKA = Vref, IKA = 10 mA,
TA = −40°C to 125°C14 34 mV
D
Vref
Ratio of change in reference voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref −1.4 −2.7
mV
DVref
DV
KA
Ratio of change in reference voltage
to the change in cathode voltage 3IKA = 10 mA ∆VKA = 36 V − 10 V −1 −2
mV
V
Iref Reference current 3 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞2 4 µA
II(dev) Deviation of reference current
over full temperature range
(see Figure 1) 3IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = −40°C to 125°C0.8 2.5 µA
Imin Minimum cathode current for
regulation 2 VKA = Vref 0.4 1 mA
Ioff Off-state cathode current 4 VKA = 36 V, Vref = 0 0.1 1 µA
|zKA|Dynamic impedance (see Figure 1) 2IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz 0.2 0.5 Ω
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431AC, TL432AC
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN TYP MAX
UNIT
Vref Reference voltage 2 VKA = Vref, IKA = 10 mA 2470 2495 2520 mV
VI(dev)
Deviation of reference voltage
over full temperature range
2
VKA = Vref,
IKA = 10 mA,
SOT23-3, SC-70,
and TL432 devices 6 16
mV
VI(dev)
over full temperature range
(see Figure 1)
2
IKA = 10 mA,
TA = 0°C to 70°CAll other devices 4 25
mV
DV
ref
Ratio of change in reference voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref −1.4 −2.7
mV
DVref
DVKA
Ratio of change in reference voltage
to the change in cathode voltage 3 IKA = 10 mA ∆VKA = 36 V − 10 V −1 −2
mV
V
Iref Reference current 3 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞2 4 µA
II(dev) Deviation of reference current
over full temperature range
(see Figure 1) 3IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = 0°C to 70°C0.8 1.2 µA
Imin Minimum cathode current
for regulation 2 VKA = Vref 0.4 0.6 mA
Ioff Off-state cathode current 4 VKA = 36 V, Vref = 0 0.1 0.5 µA
|zKA|Dynamic impedance (see Figure 1) 1IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz 0.2 0.5 Ω
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431AI, TL432AI
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN TYP MAX
UNIT
Vref Reference voltage 2 VKA = Vref, IKA = 10 mA 2470 2495 2520 mV
VI(dev)
Deviation of reference voltage
over full temperature range
2
VKA = Vref,
IKA = 10 mA,
SOT23-3, SC-70,
and TL432 devices 14 34
mV
VI(dev)
over full temperature range
(see Figure 1)
2
IKA = 10 mA,
TA = −40°C to 85°CAll other packages 5 50
mV
D
Vref
Ratio of change in reference voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref −1.4 −2.7
mV
DVref
DV
KA
Ratio of change in reference voltage
to the change in cathode voltage 3 IKA = 10 mA ∆VKA = 36 V − 10 V −1 −2
mV
V
Iref Reference current 3 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞2 4 µA
II(dev) Deviation of reference current
over full temperature range
(see Figure 1) 3IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = −40°C to 85°C0.8 2.5 µA
Imin Minimum cathode current
for regulation 2 VKA = Vref 0.4 0.7 mA
Ioff Off-state cathode current 4 VKA = 36 V, Vref = 0 0.1 0.5 µA
|zKA|Dynamic impedance (see Figure 1) 2IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz 0.2 0.5 Ω
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431AQ, TL432AQ
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN TYP MAX
UNIT
Vref Reference voltage 2 VKA = Vref, IKA = 10 mA 2470 2495 2520 mV
VI(dev) Deviation of reference voltage
over full temperature range
(see Figure 1) 2VKA = Vref, IKA = 10 mA,
TA = −40°C to 125°C14 34 mV
D
Vref
Ratio of change in reference voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref −1.4 −2.7
mV
DVref
DV
KA
Ratio of change in reference voltage
to the change in cathode voltage 3IKA = 10 mA ∆VKA = 36 V − 10 V −1 −2
mV
V
Iref Reference current 3 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞2 4 µA
II(dev) Deviation of reference current
over full temperature range
(see Figure 1) 3IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = −40°C to 125°C0.8 2.5 µA
Imin Minimum cathode current
for regulation 2 VKA = Vref 0.4 0.7 mA
Ioff Off-state cathode current 4 VKA = 36 V, Vref = 0 0.1 0.5 µA
|zKA|Dynamic impedance (see Figure 1) 2IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz 0.2 0.5 Ω
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431BC, TL432BC
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN TYP MAX
UNIT
Vref Reference voltage 2 VKA = Vref, IKA = 10 mA 2483 2495 2507 mV
VI(dev) Deviation of reference voltage
over full temperature range
(see Figure 1) 2VKA = Vref, IKA = 10 mA,
TA = 0°C to 70°C6 16 mV
D
Vref
Ratio of change in reference voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref −1.4 −2.7
mV
DVref
DV
KA
Ratio of change in reference voltage
to the change in cathode voltage 3IKA = 10 mA ∆VKA = 36 V − 10 V −1 −2
mV
V
Iref Reference current 3 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞2 4 µA
II(dev) Deviation of reference current
over full temperature range
(see Figure 1) 3IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = 0°C to 70°C0.8 1.2 µA
Imin Minimum cathode current
for regulation 2 VKA = Vref 0.4 0.6 mA
Ioff Off-state cathode current 4 VKA = 36 V, Vref = 0 0.1 0.5 µA
|zKA|Dynamic impedance (see Figure 1) 1IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz 0.2 0.5 Ω
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
14 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431BI, TL432BI
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN TYP MAX
UNIT
Vref Reference voltage 2 VKA = Vref, IKA = 10 mA 2483 2495 2507 mV
VI(dev) Deviation of reference voltage
over full temperature range
(see Figure 1) 2VKA = Vref, IKA = 10 mA,
TA = −40°C to 85°C14 34 mV
D
Vref
Ratio of change in reference voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref −1.4 −2.7
mV
DVref
DV
KA
Ratio of change in reference voltage
to the change in cathode voltage 3IKA = 10 mA ∆VKA = 36 V − 10 V −1 −2
mV
V
Iref Reference current 3 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞2 4 µA
II(dev) Deviation of reference current
over full temperature range
(see Figure 1) 3IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = −40°C to 85°C0.8 2.5 µA
Imin Minimum cathode current
for regulation 2 VKA = Vref 0.4 0.7 mA
Ioff Off-state cathode current 4 VKA = 36 V, Vref = 0 0.1 0.5 µA
|zKA|Dynamic impedance (see Figure 1) 2IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz 0.2 0.5 Ω
electrical characteristics over recommended operating conditions, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST
TEST CONDITIONS
TL431BQ, TL432BQ
UNIT
PARAMETER
TEST
CIRCUIT
TEST CONDITIONS
MIN TYP MAX
UNIT
Vref Reference voltage 2 VKA = Vref, IKA = 10 mA 2483 2495 2507 mV
VI(dev) Deviation of reference voltage
over full temperature range
(see Figure 1) 2VKA = Vref, IKA = 10 mA,
TA = −40°C to 125°C14 34 mV
D
Vref
Ratio of change in reference voltage
3
IKA = 10 mA
∆VKA = 10 V − Vref −1.4 −2.7
mV
DVref
DV
KA
Ratio of change in reference voltage
to the change in cathode voltage 3IKA = 10 mA ∆VKA = 36 V − 10 V −1 −2
mV
V
Iref Reference current 3 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞2 4 µA
II(dev) Deviation of reference current
over full temperature range
(see Figure 1) 3IKA = 10 mA, R1 = 10 kΩ, R2 = ∞,
TA = −40°C to 125°C0.8 2.5 µA
Imin Minimum cathode current
for regulation 2 VKA = Vref 0.4 0.7 mA
Ioff Off-state cathode current 4 VKA = 36 V, Vref = 0 0.1 0.5 µA
|zKA|Dynamic impedance (see Figure 1) 1IKA = 1 mA to 100 mA, VKA = Vref,
f ≤ 1 kHz 0.2 0.5 Ω
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
Vref
Input VKA
IKA
Figure 2. Test Circuit for VKA = Vref
VKA +Vrefǒ1)R1
R2Ǔ)Iref R1
Iref
IKA
VKA
Input
Vref
R1
R2
Figure 3. Test Circuit for VKA > Vref
Ioff
VKA
Input
Figure 4. Test Circuit for Ioff
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Table 1. Graphs
FIGURE
Reference voltage vs Free-air temperature 5
Reference current vs Free-air temperature 6
Cathode current vs Cathode voltage 7, 8
OFF-state cathode current vs Free-air temperature 9
Ratio of delta reference voltage to delta cathode voltage vs Free-air temperature 10
Equivalent input noise voltage vs Frequency 11
Equivalent input noise voltage over a 10-s period 12
Small-signal voltage amplification vs Frequency 13
Reference impedance vs Frequency 14
Pulse response 15
Stability boundary conditions 16
Table 2. Application Circuits
FIGURE
Shunt regulator 17
Single-supply comparator with temperature-compensated threshold 18
Precision high-current series regulator 19
Output control of a three-terminal fixed regulator 20
High-current shunt regulator 21
Crowbar circuit 22
Precision 5-V 1.5-A regulator 23
Efficient 5-V precision regulator 24
PWM converter with reference 25
Voltage monitor 26
Delay timer 27
Precision current limiter 28
Precision constant-current sink 29
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS†
‡Data is for devices having the indicated value of Vref at IKA = 10 mA,
TA = 25°C. Figure 5
2500
2480
2420
2400
−75 −50 −25 0 25 50 75
2540
2580
REFERENCE VOLTAGE
vs
FREE-AIR TEMPERATURE
2600
100 125
2460
2560
2520
2440
TA − Free-Air Temperature − °C
Vref = 2495 mV‡
Vref = 2440 mV‡
VKA = Vref
IKA = 10 mA Vref = 2550 mV‡
− Reference Voltage − mV
Vref
3
2
1
0
−75 −25 0 50
4
REFERENCE CURRENT
vs
FREE-AIR TEMPERATURE
5
100 125
−50 25 75
TA − Free-Air Temperature − °C
R1 = 10 kΩ
R2 = ∞
IKA = 10 mA
− Reference Current −ref
IAµ
Figure 6
Figure 7
25
0
−50
−75
−100
125
−25
−2 −1 0 1
75
50
100
CATHODE CURRENT
vs
CATHODE VOLTAGE
150
23
VKA − Cathode Voltage − V
VKA = Vref
TA = 25°C
− Cathode Current − mAIKA
Figure 8
400
200
0
−200−1 0 1
600
CATHODE CURRENT
vs
CATHODE VOLTAGE
800
23
VKA = Vref
TA = 25°C
VKA − Cathode Voltage − V
Imin
− Cathode Current −
IKA Aµ
†Data at high and low temperatures is applicable only within the recommended operating free-air temperature ranges of the various devices.
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
18 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS†
Figure 9
1.5
1
0.5
0
−75 −25 0 50
− Off-State Cathode Current −
2
OFF-STATE CATHODE CURRENT
vs
FREE-AIR TEMPERATURE
2.5
100 125
−50 25 75
Ioff Aµ
TA − Free-Air Temperature − °C
VKA = 36 V
Vref = 0
Figure 10
−1.15
−1.25
−1.35
−1.45
−1.05
− 0.95
RATIO OF DELTA REFERENCE VOLTAGE TO
DELTA CATHODE VOLTAGE
vs
FREE-AIR TEMPERATURE
− 0.85
TA − Free-Air Temperature − °C
−75 −25 0 50 100 125−50 25 75
VKA = 3 V to 36 V
− mV/V
∆Vref ∆VKA
/
180
140
120
10010 100 1 k
220
240
f − Frequency − Hz
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREQUENCY
260
10 k 100 k
200
160
− Equivalent Input Noise Voltage − nV/ HzVn
IO = 10 mA
TA = 25°C
Figure 11
†Data at high and low temperatures is applicable only within the recommended operating free-air temperature ranges of the various devices.
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
19.1 V
VCC
TLE2027
TLE2027
AV = 10 V/mV
VEE
0.1 µF
160 kΩ
820 Ω
(DUT)
TL431
16 Ω
910 Ω2000 µF
1 kΩ
VEE
VCC
1 µF
16 kΩ16 kΩ
1 µF33 kΩ
33 kΩ
AV = 2 V/V
22 µF
500 µF
To
Oscilloscop
e
−1
−2
−4
−5
−6
3
−3
0123456
1
0
2
EQUIVALENT INPUT NOISE VOLTAGE
OVER A 10-S PERIOD
4
78910
5
6
t − Time − s
f = 0.1 to 10 Hz
IKA = 10 mA
TA = 25°C
− Equivalent Input Noise Voltage − µV
Vn
+
−+
−
Figure 12. Test Circuit for Equivalent Input Noise Voltage
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
20 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
1 k 10 k 100 k 1 M 10 M
0
10
20
30
50
60
40
SMALL-SIGNAL VOLTAGE AMPLIFICATION
vs
FREQUENCY
9 µF
GND
Output
232 Ω
8.25 kΩ
IKA
15 kΩ
f − Frequency − Hz
TEST CIRCUIT FOR VOLTAGE AMPLIFICATION
IKA = 10 mA
TA = 25°C
− Small-Signal Voltage Amplification − dBAV
+
−
IKA = 10 mA
TA = 25°C
Figure 13
1 kΩ
50 Ω
GND
Output
IKA
0.1
1 k 10 k 100 k 1 M 10 M
1
f − Frequency − Hz
REFERENCE IMPEDANCE
vs
FREQUENCY
10
100 IKA = 10 mA
TA = 25°C
TEST CIRCUIT FOR REFERENCE IMPEDANCE
− Reference Impedance −
KA
|z | Ω
+
−
Figure 14
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
21
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
2
1
0−1 0 1 2 3 4
Input and Output Voltage − V
4
5
PULSE RESPONSE
6
567
Input
Output
TA = 25°C
220 Ω
50 Ω
GND
Output
Pulse
Generator
f = 100 kHz
TEST CIRCUIT FOR PULSE RESPONSE
t − Time − µs
Figure 15
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
22 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
50
40
10
0
0.001 0.01 0.1 1
70
90
STABILITY BOUNDARY CONDITIONS†
FOR ALL TL431 AND TL431A DEVICES
(EXCEPT FOR SOT23-3, SC-70, AND Q-TEMP DEVICES)
100
10
30
80
60
20
TA = 25°C
B
Stable
Stable
A VKA = Vref
B VKA = 5 V
C VKA = 10 V
D VKA = 15 Vf
CL − Load Capacitance − µF
A
C
D150 Ω
IKA
R1 = 10 kΩ
R2
CL
VBATT
IKA
CLVBATT
150 Ω
TEST CIRCUIT FOR CURVE A
TEST CIRCUIT FOR CURVES B, C, AND D
− Cathode Current − mA
IKA
+
−
+
−
50
40
10
0
0.001 0.01 0.1 1
70
90
STABILITY BOUNDARY CONDITIONS†
FOR ALL TL431B, TL432, SOT-23, SC-70, AND Q-TEMP DEVICES
100
10
30
80
60
20
BStable
Stable
A VKA = Vref
B VKA = 5 V
C VKA = 10 V
D VKA = 15 Vf
CL − Load Capacitance − µF
A
C
D
150 Ω
IKA
R1 = 10 kΩ
R2
CL
VBATT
IKA
CLVBATT
150 Ω
TEST CIRCUIT FOR CURVE A
TEST CIRCUIT FOR CURVES B, C, AND D
− Cathode Current − mA
IKA
†The areas under the curves represent conditions that may cause the
device to oscillate. For curves B, C, and D, R2 and V+ were adjusted
to establish the initial VKA and IKA conditions with CL = 0. VBATT and
CL then were adjusted to determine the ranges of stability.
+
−
+
−
B
A
TA = 25°C
Figure 16
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
23
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
R1
0.1%
R2
0.1%
R
(see Note A)
Vref
VO
TL431
VI(BATT)
RETURN
NOTE A: R should provide cathode current ≥1 mA to the TL431 at minimum VI(BATT).
VO+ǒ1)R1
R2ǓVref
Figure 17. Shunt Regulator
VO
TL431
VI(BATT)
VIT ≈2.5 V GND
Input Von ≈2 V
Voff ≈VI(BATT)
Figure 18. Single-Supply Comparator With Temperature-Compensated Threshold
R
(see Note A)
VO
TL431
VI(BATT)
2N222
2N222
4.7 kΩ
R1
0.1%
R2
0.1%
0.01 µF
30 Ω
VO+ǒ1)R1
R2ǓVref
NOTE A: R should provide cathode current ≥1 mA to the TL431 at minimum VI(BATT).
Figure 19. Precision High-Current Series Regulator
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
24 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
VO
TL431
VI(BATT)
uA7805
IN OUT
Common R1
R2
VO+ǒ1)R1
R2ǓVref
Minimum VO+Vref )5V
Figure 20. Output Control of a Three-Terminal Fixed Regulator
VO
TL431
VI(BATT)
R1
R2
VO+ǒ1)R1
R2ǓVref
Figure 21. High-Current Shunt Regulator
VO
TL431
VI(BATT)
R1
R2
NOTE A: Refer to the stability boundary conditions in Figure 16 to determine allowable values for C.
C
(see Note A)
Figure 22. Crowbar Circuit
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
25
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
VO ≈5 V, 1.5 A
TL431
VI(BATT) LM317
IN OUT
Adjust 243 Ω
0.1%
243 Ω
0.1%
8.2 kΩ
Figure 23. Precision 5-V 1.5-A Regulator
VO ≈5 V
TL431
VI(BATT)
27.4 kΩ
0.1%
Rb
(see Note A)
27.4 kΩ
0.1%
NOTE A: Rb should provide cathode current ≥1 mA to the TL431.
Figure 24. Efficient 5-V Precision Regulator
TL431
12 V
VCC
5 V
6.8 kΩ
10 kΩ
10 kΩ
0.1%
10 kΩ
0.1%
X
Not
Used
Feedback
TL598
+
−
Figure 25. PWM Converter With Reference
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
26 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
TL431
VI(BATT)
R3
(see Note A)
R1A R4
(see Note A)
R2BR2A
NOTE A: R3 and R4 are selected to provide the desired LED intensity and cathode current ≥1 mA to the TL431 at the available VI(BATT).
R1B Low Limit +ǒ1)R1B
R2BǓVref
High Limit +ǒ1)R1A
R2AǓVref
LED on When Low Limit < VI(BATT) < High Limit
Figure 26. Voltage Monitor
TL431
650 Ω
2 kΩ
C
On
Off
R
12 V
Delay +R C Inǒ12 V
12 V *VrefǓ
Figure 27. Delay Timer
TL431
IO
RCL
0.1%
R1
VI(BATT) Iout +Vref
RCL )IKA
R1 +VI(BATT)
IO
hFE )IKA
Figure 28. Precision Current Limiter
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
27
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
TL431 RS
0.1%
IO
VI(BATT)
IO+Vref
RS
Figure 29. Precision Constant-Current Sink
MECHANICAL DATA
MCER001A – JANUARY 1995 – REVISED JANUAR Y 1997
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
JG (R-GDIP-T8) CERAMIC DUAL-IN-LINE
0.310 (7,87)
0.290 (7,37)
0.014 (0,36)
0.008 (0,20)
Seating Plane
4040107/C 08/96
5
4
0.065 (1,65)
0.045 (1,14)
8
1
0.020 (0,51) MIN
0.400 (10,16)
0.355 (9,00)
0.015 (0,38)
0.023 (0,58)
0.063 (1,60)
0.015 (0,38)
0.200 (5,08) MAX
0.130 (3,30) MIN
0.245 (6,22)
0.280 (7,11)
0.100 (2,54)
0°–15°
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. This package can be hermetically sealed with a ceramic lid using glass frit.
D. Index point is provided on cap for terminal identification.
E. Falls within MIL STD 1835 GDIP1-T8
MECHANICAL DATA
MLCC006B – OCTOBER 1996
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
FK (S-CQCC-N**) LEADLESS CERAMIC CHIP CARRIER
4040140/D 10/96
28 TERMINAL SHOWN
B
0.358
(9,09)
MAX
(11,63)
0.560
(14,22)
0.560
0.458
0.858
(21,8)
1.063
(27,0)
(14,22)
A
NO. OF
MINMAX
0.358
0.660
0.761
0.458
0.342
(8,69)
MIN
(11,23)
(16,26)
0.640
0.739
0.442
(9,09)
(11,63)
(16,76)
0.962
1.165
(23,83)
0.938
(28,99)
1.141
(24,43)
(29,59)
(19,32)(18,78)
**
20
28
52
44
68
84
0.020 (0,51)
TERMINALS
0.080 (2,03)
0.064 (1,63)
(7,80)
0.307
(10,31)
0.406
(12,58)
0.495
(12,58)
0.495
(21,6)
0.850
(26,6)
1.047
0.045 (1,14)
0.045 (1,14)
0.035 (0,89)
0.035 (0,89)
0.010 (0,25)
12
1314151618 17
11
10
8
9
7
5
432
0.020 (0,51)
0.010 (0,25)
6
12826 27
19
21
B SQ
A SQ 22
23
24
25
20
0.055 (1,40)
0.045 (1,14)
0.028 (0,71)
0.022 (0,54)
0.050 (1,27)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. This package can be hermetically sealed with a metal lid.
D. The terminals are gold plated.
E. Falls within JEDEC MS-004
MECHANICAL DATA
MPDI001A – JANUARY 1995 – REVISED JUNE 1999
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
P (R-PDIP-T8) PLASTIC DUAL-IN-LINE
8
4
0.015 (0,38)
Gage Plane
0.325 (8,26)
0.300 (7,62)
0.010 (0,25) NOM
MAX
0.430 (10,92)
4040082/D 05/98
0.200 (5,08) MAX
0.125 (3,18) MIN
5
0.355 (9,02)
0.020 (0,51) MIN
0.070 (1,78) MAX
0.240 (6,10)
0.260 (6,60)
0.400 (10,60)
1
0.015 (0,38)
0.021 (0,53)
Seating Plane
M
0.010 (0,25)
0.100 (2,54)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm
MECHANICAL DATA
MPDS108 – AUGUST 2001
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DBZ (R-PDSO-G3) PLASTIC SMALL-OUTLINE
0,55 REF
4203227/A 08/01
3,04
2,80
2,05
1,781,03
0,89
0,60
0,45
2,64
2,10
1,40
1,20
0,51
0,37
1,12
0,89
0,100
0,013 0,180
0,085
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Dimensions are inclusive of plating.
D. Dimensions are exclusive of mold flash and metal burr.
MECHANICAL DATA
MPSF001F – JANUARY 1996 – REVISED JANUARY 2002
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
KTP (R-PSFM-G2) PowerFLEX PLASTIC FLANGE-MOUNT PACKAGE
0.228 (5,79)
0.218 (5,54)
0.233 (5,91)
0.243 (6,17)
0.001 (0,02)
0.005 (0,13)
0.070 (1,78)
Seating Plane
0.080 (2,03)
0.010 (0,25) NOM
Gage Plane
0.010 (0,25)
4073388/M 01/02
0.037 (0,94)
0.047 (1,19)
0.247 (6,27)
0.237 (6,02)
NOM
0.215 (5,46)
0.371 (9,42)
0.381 (9,68)
0.090 (2,29)
0.100 (2,54)
0.287 (7,29)
0.031 (0,79)
0.032 (0,81) MAX
0.277 (7,03)
0.025 (0,63)
0.130 (3,30) NOM
0.090 (2,29)
0.180 (4,57) M
0.010 (0,25)
0.004 (0,10)
2°–ā6°
0.040 (1,02)
0.050 (1,27)
Thermal Tab
(See Note C)
0.010 (0,25) NOM
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. The center lead is in electrical contact with the thermal tab.
D. Dimensions do not include mold protrusions, not to exceed 0.006 (0,15).
E. Falls within JEDEC TO-252 variation AC.
PowerFLEX is a trademark of Texas Instruments.
MECHANICAL DATA
MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
LP (O-PBCY-W3) PLASTIC CYLINDRICAL PACKAGE
4040001-2/C 10/01
STRAIGHT LEAD OPTION
0.016 (0,41)
0.014 (0,35)
0.157 (4,00) MAX
FORMED LEAD OPTION
0.104 (2,65)
0.210 (5,34)
0.170 (4,32)
0.050 (1,27)
0.016 (0,41)
0.022 (0,56)
0.500 (12,70) MIN
Seating
Plane
0.175 (4,44)
0.205 (5,21) 0.165 (4,19)
0.125 (3,17)
DIA
D
C
0.105 (2,67)
0.095 (2,41)
0.135 (3,43) MIN
0.080 (2,03)
0.055 (1,40)
0.045 (1,14)
1
0.105 (2,67)
23
0.080 (2,03)
0.105 (2,67)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Lead dimensions are not controlled within this area
D. FAlls within JEDEC TO -226 Variation AA (TO-226 replaces TO-92)
E. Shipping Method:
Straight lead option available in bulk pack only.
Formed lead option available in tape & reel or ammo pack.
MECHANICAL DATA
MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
LP (O-PBCY-W3) PLASTIC CYLINDRICAL PACKAGE
4040001-3/C 10/01
0.094 (2,40)
0.114 (2,90)
0.460 (11,70)
0.539 (13,70)
TAPE & REEL
0.335 (8,50)
0.384 (9,75)
0.020 (0,50) MIN
0.217 (5,50)
0.748 (19,00) 0.748 (19,00)
0.689 (17,50)
0.098 (2,50)
0.433 (11,00)
0.335 (8,50)
0.610 (15,50)
0.650 (16,50)
1.260 (32,00)
0.905 (23,00)
0.234 (5,95)
0.266 (6,75)
0.512 (13,00)
0.488 (12,40)
0.114 (2,90)
0.094 (2,40) 0.146 (3,70)
0.169 (4,30) DIA
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Tape and Reel information for the Format Lead Option package.
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,65 M
0,10
0,10
0,25
0,50
0,75
0,15 NOM
Gage Plane
28
9,80
9,60
24
7,90
7,70
2016
6,60
6,40
4040064/F 01/97
0,30
6,60
6,20
80,19
4,30
4,50
7
0,15
14
A
1
1,20 MAX
14
5,10
4,90
8
3,10
2,90
A MAX
A MIN
DIM PINS **
0,05
4,90
5,10
Seating Plane
0°–8°
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
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