Semiconductor Components Industries, LLC, 2003
March, 2003 - Rev. 2 1Publication Order Number:
NCV4276/D
NCV4276
Advance Information
Low−Drop Voltage
Regulator
This industry standard linear regulator has the capability to drive
loads up to 400 mA at 5.0 V, 3.3 V, 2.5 V and 1.8 V, and is also
available in an adjustable version. Package options include DPAK,
D2PAK, and TO-220. This device is pin-for-pin compatible with the
Infineon part number TLE4276.
Features
•5.0 V, 3.3 V, 2.5 V, 1.8 V, or Adjustable,
±4%, 400 mA Output Voltage
•500 mV (max) Dropout Voltage
•Inhibit Input
•Very Low Current Consumption
•Fault Protection
♦+45 V Peak Transient Voltage
♦-42 V Reverse Voltage
♦Short Circuit
♦Thermal Overload
•NCV Prefix for Automotive and Other Applications Requiring Site
and Change Control
-
+
I
INH
Q
GND
Current Lim it a n d
Saturation Sense
Bandgap
Reference
Thermal
Shutdown
Figure 1. Block Diagram
Error
Amplifier
VA
Adjustable Version Only
5 V Version Only
This document contains information on a new product. Specifications and information
herein are subject to change without notice.
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D2PAK
5-PIN
DP SUFFIX
CASE 936A-02
15
DPAK
5-PIN
DT SUFFIX
CASE TBD
Pin 1. I
2. INH
3. GND
4. NC/VA
5. Q
TO-220
FIVE LEAD
TQ SUFFIX
CASE 314D
1515
TO-220
FIVE LEAD
TQVA SUFFIX
CASE 314N
See general marking information in the device marking
section on page 5 of this data sheet.
DEVICE MARKING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
ORDERING INFORMATION
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2
MAXIMUM RATINGS*†
Rating Min Max Unit
Input [I (DC)] -42 45 V
Input [I (Peak T ransient Voltage)] - TBD V
Inhibit INH -42 45 V
Voltage Adjust Input VA -0.3 10 V
Output (Q) -1.0 40 V
Ground (GND) - 100 mA
Operating Range (I) Q + 0.5 40 V
Operating Range (I), Adjustable Device, Q < 4.0 V 4.5 40 V
ESD Susceptibility (Human Body Model) 2.0 - kV
Junction Temperature -40 150 °C
Storage Temperature -50 150 °C
Package Thermal Resistance, DPAK, 5-Pin : Junction-to-Case, RθJC
Junction-to-Ambient, RθJA -
-TBD
TBD °C/W
°C/W
Package Thermal Resistance, D2PAK, 5-Pin : Junction-to-Case, RθJC
Junction-to-Ambient, RθJA -
-TBD
TBD °C/W
°C/W
Package Thermal Resistance, T O-220, 5-Lead: Junction-to-Case, RθJC
Junction-to-Ambient, RθJA -
-TBD
TBD °C/W
°C/W
Lead Temperature Soldering Reflow (SMD styles only) Note 1
W ave Solder (through hole styles only) Note 2
-
-240 Peak
(Note 3)
260 Peak
°C
°C
1. 10 seconds max.
2. 60 seconds max above 183°C.
3. -5°C/+0°C allowable conditions.
*The maximum package power dissipation must be observed.
†During the voltage range which exceeds the maximum tested voltage of I, operation is assured, but not specified. Wider limits may appl y. Thermal
dissipation must be observed closely .
ELECTRICAL CHARACTERISTICS (I = 13.5 V ; -40°C < TJ < 150°C; unless otherwise noted)
Characteristic Test Conditions Min Typ Max Unit
Output
Output Voltage, 5.0 V Version 5.0 mA < IQ < 400 mA, 6.0 V < VI < 28 V 4.8 5.0 5.2 V
Output Voltage, 5.0 V Version 5.0 mA < IQ < 200 mA, 6.0 V < VI < 40 V 4.8 5.0 5.2 V
Output Voltage, 3.3 V Version 5.0 mA < IQ < 400 mA, 6.0 V < VI < 28 V 3.168 3.300 3.432 V
Output Voltage, 3.3 V Version 5.0 mA < IQ < 200 mA, 6.0 V < VI < 40 V 3.168 3.300 3.432 V
Output Voltage, 2.5 V Version 5.0 mA < IQ < 400 mA, 6.0 V < VI < 28 V 2.4 2.5 2.6 V
Output Voltage, 2.5 V Version 5.0 mA < IQ < 200 mA, 6.0 V < VI < 40 V 2.4 2.5 2.6 V
Output Voltage, 1.8 V Version 5.0 mA < IQ < 400 mA, 6.0 V < VI < 28 V 1.728 1.800 1.872 V
Output Voltage, 1.8 V Version 5.0 mA < IQ < 200 mA, 6.0 V < VI < 40 V 1.728 1.800 1.872 V
Output Voltage Tolerance,
Adjustable Version R2 < 50 k, Q + 1.0 V < I < 40 V, I > 4.5 V,
5.0 mA < IQ < 400 mA -4.0 - 4.0 %
Output Current Limitation (Note 4) - 400 600 1100 mA
Output Current Limitation (Sleep Mode)
Iq = II - IQINH = 0 V, TJ < 100°C - - 10 µA
Quiescent Current, Iq = II - IQIQ = 1.0 mA - 100 220 µA
Quiescent Current, Iq = II - IQIQ = 250 mA - 5.0 10 mA
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ELECTRICAL CHARACTERISTICS (continued) (I = 13.5 V; -40°C < TJ < 150°C; unless otherwise noted)
Characteristic UnitMaxTypMinTest Conditions
Output (continued)
Quiescent Current, Iq = II - IQIQ = 400 mA - 15 25 mA
Dropout Voltage (Note 3),
5.0 V Version
3.3 V Version
2.5 V Version
1.8 V Version
IQ = 250 mA, Vdr = VI - VQ-
-
-
-
250
-
-
-
500
1.2
2.0
2.7
mV
V
V
V
ELECTRICAL CHARACTERISTICS (Continued) (I = 13.5 V; -40°C < TJ < 150°C; unless otherwise noted)
Characteristic Test Conditions Min Typ Max Unit
Output
Dropout Voltage (Note 4),
Adjustable Version IQ = 250 mA, I > 4.5 V, Vdr = VI - VQ- 250 500 mV
Load Regulation IQ = 5.0 mA to 400 mA - 5.0 35 mV
Line Regulation ∆V = 12 V to 32 V, IQ = 5.0 mA - 15 25 mV
Power Supply Ripple Rejection fr = 100 Hz, Vr = 0.5 Vpp - 54 - dB
Temperature Output Voltage Drift - - 0.5 - mV/k
Inhibit
Inhibit On Voltage Q > 4.9 V - 2.0 3.5 V
Inhibit Of f Voltage Q < 1.0 V 0.5 1.7 - V
Input Current INH = 5.0 V 5.0 10 20 µA
4. Measured when the output voltage VQ has dropped 100 mV from the nominal value obtained at VI = 13.5 V.
PIN DESCRIPTION
Pin No. Symbol Description
ÑÑÑÑ
ÑÑÑÑ
1
ÑÑÑÑÑÑ
ÑÑÑÑÑÑ
I
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
Input; Battery Supply Input Voltage.
ÑÑÑÑ
ÑÑÑÑ
2
ÑÑÑÑÑÑ
ÑÑÑÑÑÑ
INH
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
Inhibit; Low-active input.
ÑÑÑÑ
ÑÑÑÑ
3
ÑÑÑÑÑÑ
ÑÑÑÑÑÑ
GND
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
Ground; Pin 3 internally connected to heatsink.
ÑÑÑÑ
Ñ
ÑÑÑ
ÑÑÑÑ
4
ÑÑÑÑÑÑ
ÑÑÑÑÑ
Ñ
ÑÑÑÑÑÑ
NC/VA
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
Ñ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
Ñ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
Not Connected for fixed voltage versions. Voltage Adjust Input; Only for adjustable version. Connect
an external voltage driver to set the output voltage.
ÑÑÑÑ
ÑÑÑÑ
5
ÑÑÑÑÑÑ
ÑÑÑÑÑÑ
Q
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
Output; ±4.0%, 400 mA output. Use 22 µF, ESR > 3.0 Ω at 10 kHz to ground.
Input CI1
100 µFCI2
100 nF
III
INH
1
2
5
4
3GND
CQ*
IQ
Q
VA
R1*
Output
Figure 2. Measuring Circuit
NCV4276
R2*
RL
* 22 µF for Adjustable and 5V Versions.
10 µF for 3.3 V, 2.5 V, and 1.8 V Versions.
IINH
Circuit Description
The error amplifier compares a temperature stable
reference voltage to a voltage that is proportional to the
output voltage (Q) (generated from a resistor divider) and
drives the base of a series transistor via a buf fer. Saturation
control as a function of the load current prevents any
oversaturation of the output power device preventing
excessive substrate current (quiescent current).
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Setting the Output Voltage (Adjustable Version)
The output voltage range of the adjustable version can be
set between 2.5 V and 20 V (Figure 4). This is
accomplished with an external resistor divider feeding
back the voltage to the IC back to the error amplifier by the
voltage adjust pin VA. The internal reference voltage is set
to a temperature stable reference voltage of 2.5 V.
The output voltage is calculated from the following
formula. Ignoring the bias current into the VA pin,
Q[(R1 R2) Vref ]R2
Use R2 < 50 k to avoid significant output voltage errors
due to VA bias current.
Connecting VA directly to Q without R1 and R2 creates
an output voltage of 2.5 V.
Designers should consider the tolerance of R1 and R2
during the design phase.
The input voltage range for operation (pin I) of the
adjustable version is between (Q + 0.5 V) and 40 V. Internal
bias requirement s dictate a mini mum input vol tage of 4.3 V.
The dropout voltage for output voltages less than 4 V is
(4.3 V - Q).
Calculating Power Dissipation
in a Single Output Linear Regulator
The maximum power dissipation for a single output
regulator (Figure 3) is:
PD(max) [VIN(max) VOUT(min)]IOUT(max) (1)
VIN(max)Iq
where
VIN(max) is the maximum input voltage,
VOUT(min) is the minimum output voltage,
IOUT(max) is the maximum output current for the
application,
IQ is the quiescent current the regulator
consumes at IOUT(max).
Once the value of PD(max) is known, the maximum
permissible value of RΘJA can be calculated:
RJA 150°CTA
PD(2)
The value of RΘJA can then be compared with those in
the package section of the data sheet. Those packages with
RΘJA’s less than the calculated value in Equation 2 will
keep the die temperature below 150°C.
In some cases, none of the packages will be sufficient to
dissipate the heat generated by the IC, and an external
heatsink will be required.
SMART
REGULATOR
Iq
Control
Features
IOUT
IIN
Figure 3. Single Output Regulator with Key
Performance Parameters Labeled
VIN VOUT
}
Heat Sinks
A heat sink effectively increases the surface area of the
package to improve the flow of heat away from the IC and
into the surrounding air.
Each material in the heat flow path between the IC and
the outside environment will have a thermal resistance.
Like series electrical resistances, these resistances are
summed to determine the value of RΘJA:
RJA RJCRCS RSA (3)
where
RΘJC is the junction-to-case thermal resistance,
RΘCS is the case-to-heatsink thermal resistance,
RΘSA is the heatsink-to-ambient thermal
resistance.
RΘJC appears in the package section of the data sheet.
Like RΘJA, it too is a function of package type. RΘCS and
RΘSA are functions of the package type, heatsink and the
interface between them. These values appear in heat sink
data sheets of heat sink manufacturers.
NCV4276 CONFIDENTIAL AND PROPRIETARY
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5
CQ
22 µF
Q
VA
R1
VOUT
Figure 4. Adjustable Version Application Setup
R2
-
+
Current Limit and
Saturation Sense
Vref = 2.5 V
MARKING DIAGRAMS
D2PAK
DP SUFFIX
CASE 936A-02
DPAK
DT SUFFIX
CASE TBD
TO-220
TQ SUFFIX
CASE 314D
TO-220
TQVA SUFFIX
CASE 314N
XXX... = Specific Device Code
A = Assembly Location
WL, L = W afer Lot
YY, Y = Year
WW, W = W ork Week
XX
XXXXXXXXX
AWLYWW
XXXXXXX
AWLYYWW
1
XX
XXXXXXXXX
AWLYWW
1
1
XXXXXXX
AWLYYWW
1
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ORDERING INFORMATION
Device Outpu t Voltage Package Shipping
NCV4276DTADJ
DPAK 5 Pin
xx Units/Rail
NCV4276DTADJRK DPAK, 5-Pin xxx Tape & Reel
NCV4276DPADJ
Adjustable
D2PAK 5 Pin
50 Units/Rail
NCV4276DPADJR5 Adjustable D2PAK, 5-Pin 750 Tape & Reel
NCV4276TQ5ADJ TO-220, 5-Lead, Straight 50 Units/Rail
NCV4276TQVA5ADJ TO-220, 5-Lead, Vertical 50 Units/Rail
NCV4276DT50
DPAK 5 Pin
xx Units/Rail
NCV4276DT50RK DPAK, 5-Pin xxx Tape & Reel
NCV4276DP50
50V
D2PAK 5 Pin
50 Units/Rail
NCV4276DP50R5 5.0 V D2PAK, 5-Pin 750 Tape & Reel
NCV4276TQ50 TO-220, 5-Lead, Straight 50 Units/Rail
NCV4276TQVA50 TO-220, 5-Lead, Vertical 50 Units/Rail
NCV4276DT33
DPAK 5 Pin
xx Units/Rail
NCV4276DT33RK DPAK, 5-Pin xxx Tape & Reel
NCV4276DP33
33V
D2PAK 5 Pin
50 Units/Rail
NCV4276DP33R5 3.3 V D2PAK, 5-Pin 750 Tape & Reel
NCV4276TQ33 TO-220, 5-Lead, Straight 50 Units/Rail
NCV4276TQVA33 TO-220, 5-Lead, Vertical 50 Units/Rail
NCV4276DT25
DPAK 5 Pin
xx Units/Rail
NCV4276DT25RK DPAK, 5-Pin xxx Tape & Reel
NCV4276DP25
25V
D2PAK 5 Pin
50 Units/Rail
NCV4276DP25R5 2.5 V D2PAK, 5-Pin 750 Tape & Reel
NCV4276TQ25 TO-220, 5-Lead, Straight 50 Units/Rail
NCV4276TQVA25 TO-220, 5-Lead, Vertical 50 Units/Rail
NCV4276DT18
DPAK 5 Pin
xx Units/Rail
NCV4276DT18RK DPAK, 5-Pin xxx Tape & Reel
NCV4276DP18
18V
D2PAK 5 Pin
50 Units/Rail
NCV4276DP18R5 1.8 V D2PAK, 5-Pin 750 Tape & Reel
NCV4276TQ18 TO-220, 5-Lead, Straight 50 Units/Rail
NCV4276TQVA18 TO-220, 5-Lead, Vertical 50 Units/Rail
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PACKAGE DIMENSIONS
DPAK, 5-PIN
DT SUFFIX
CASE TBD
ISSUE TBD
CASE 936A-02
ISSUE B
D PAK
5 REF
A
123
K
B
S
H
D
G
C
E
ML
P
N
R
V
U
TERMINAL 6
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. TAB CONTOUR OPTIONAL WITHIN DIMENSIONS
A AND K.
4. DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 6.
5. DIMENSIONS A AND B DO NOT INCLUDE MOLD
FLASH OR GATE PROTRUSIONS. MOLD FLASH
AND GATE PROTRUSIONS NOT TO EXCEED
0.025 (0.635) MAXIMUM.
DIM
A
MIN MAX MIN MAX
MILLIMETERS
0.386 0.403 9.804 10.236
INCHES
B0.356 0.368 9.042 9.347
C0.170 0.180 4.318 4.572
D0.026 0.036 0.660 0.914
E0.045 0.055 1.143 1.397
G0.067 BSC 1.702 BSC
H0.539 0.579 13.691 14.707
K0.050 REF 1.270 REF
L0.000 0.010 0.000 0.254
M0.088 0.102 2.235 2.591
N0.018 0.026 0.457 0.660
P0.058 0.078 1.473 1.981
R5 REF
S0.116 REF 2.946 REF
U0.200 MIN 5.080 MIN
V0.250 MIN 6.350 MIN
45
M
0.010 (0.254) T
-T-
OPTIONAL
CHAMFER
2
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PACKAGE DIMENSIONS
TO-220
FIVE LEAD
T SUFFIX
CASE 314D-04
ISSUE E
-Q-
12345
U
K
DG
A
B
5 PL
J
H
L
EC
M
Q
M
0.356 (0.014) T
SEATING
PLANE
-T-
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.572 0.613 14.529 15.570
B0.390 0.415 9.906 10.541
C0.170 0.180 4.318 4.572
D0.025 0.038 0.635 0.965
E0.048 0.055 1.219 1.397
G0.067 BSC 1.702 BSC
H0.087 0.112 2.210 2.845
J0.015 0.025 0.381 0.635
K0.990 1.045 25.146 26.543
L0.320 0.365 8.128 9.271
Q0.140 0.153 3.556 3.886
U0.105 0.117 2.667 2.972
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION D DOES NOT INCLUDE
INTERCONNECT BAR (DAMBAR) PROTRUSION.
DIMENSION D INCLUDING PROTRUSION SHALL
NOT EXCEED 10.92 (0.043) MAXIMUM.
TO-220
FIVE LEAD
TFVA SUFFIX
CASE 314N-01
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION D DOES NOT INCLUDE
INTERCONNECT BAR (DAMBAR) PROTRUSION.
DIMENSION D INCLUDING PROTRUSION SHALL
NOT EXCEED 10.92 (0.043) MAXIMUM.
4. LEADS MAINTAIN A RIGHT ANGLE WITH
RESPECT TO THE PACKAGE BODY TO WITHIN
0.015 ".
DIM
A
MIN MAX MIN MAX
MILLIMETERS
0.604 0.614 15.34 15.60
INCHES
B0.395 0.405 10.03 10.29
C0.175 0.185 4.44 4.70
D0.027 0.037 0.69 0.94
E0.100 0.110 2.54 2.79
F0.712 0.727 18.08 18.47
G0.067 BSC 1.70 BSC
H0.020 0.030 0.51 0.76
J0.014 0.022 0.36 0.56
K0.889 0.904 22.58 22.96
L0.324 0.339 8.23 8.61
M0.115 0.130 2.92 3.30
N0.115 0.125 2.92 3.17
-T- SEATING
PLANE
M
S
E
C
K
F
D5 PL
M
Q
M
0.356 (0.014) T
G
U
B
-Q- H
A
N
12345
L
J
R
W
Q0.120 0.130 3.05 3.30
R0.292 0.342 7.42 8.69
S0.133 0.183 3.38 4.65
U0.480 0.495 12.19 12.57
W5°5°
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Notes
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changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any
particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all
liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provid ed in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be
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For additional information, please contact your local
Sales Representative.
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