TA76431F/FR
2009-09-30
1
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA76431F,TA76431FR
Adjustable Precision Shunt Regulator
Features
• Precision Reference Voltage: VREF = 2.495 V ± 2.2%
• Small Temperature Coefficient: |αVREF| = 46 ppm/°C
• Adjustable Output Voltage: VREF ≤ VOUT ≤ 36 V
• Low Dynamic Output Impedance: |ZKA| = 0.15 Ω (Typ.)
• Small Flat Package
• TA76431FR is a new Toshiba shunt regulator.
This device’s pin assignment is the reverse of that of the
TA76431F.
Functional Block Diagram Circuit Symbol
This IC contains electrostatic sensitive elements. Please take care to avoid generating static electricity when
handling these devices.
Marking
(1) TA76431F (2) TA76431FR
Note 1: A line beside a Lot No. identifies the indication of product Labels.
Without a line: [[Pb]]/INCLUDES > MCV
With a line: [[G]]/RoHS COMPATIBLE or [[G]]/RoHS [[Pb]]
Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS
compatibility of Product. The RoHS is the Directive 2002/95/EC of the European Parliament and of the Council of 27
January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment.
Pin Assignment
No. (1) TA76431F (2) TA76431FR
1 Cathode (K) Reference (REF)
2 Anode (A) Anode (A)
3 Reference (REF) Cathode (K)
Weight: 0.05 g (typ.)
1 2 3
Reference (REF)
Cathode (K)
A
node (A)
Reference (REF)
Cathode (K)
A
node (A)
A S
Part No. (or abbreviation code)
Lot No.
(weekly code)
Note 1
B S
Part No. (or abbreviation code)
Lot No.
(weekly code)
Note 1
TA76431F/FR
2009-09-30
2
How to Order
No. Product No. Package Type Packing Type Minimum
Order
TA76431F On cut tape (TE12L): 100 pcs/tape section 100
(1)
TA76431F (TE12L) Embossed tape: 1000 pcs/tape 1 tape
TA76431FR On cut tape (TE12L): 100 pcs/tape section 100
(2)
TA76431FR (TE12L)
PW-Mini (SOT-89) (surface-mount type)
Embossed tape: 1000 pcs/tape 1 tape
Equivalent Circuit
Absolute Maximum Ratings (Ta = 25°C)
Characteristics Symbol Rating Unit
Cathode voltage VKA 37 V
Cathode current IK −100 to 150 mA
Reference voltage VREF 7 V
Reference current IREF 50 μA
Reference-anode reverse current −IREF 10 mA
500
Power dissipation PD
1000 (Note 2)
mW
Operating temperature Topr −40 to 85 °C
Storage temperature Tstg −55 to 150 °C
Note 2: Mounted on ceramic substrate (250 mm2 × 0.8 mm (t))
Note 3: Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly
even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute
maximum ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
R2
Q11
Cathode
R3
C1
R5
R7
R6
R4
C2
R9
R8
Q2
Reference
A
node
R1
Q1
Q7
Q6
Q8
Q9
Q4
Q5
Q3
Q10
TA76431F/FR
2009-09-30
3
min
max
VREF (dev)
ΔTa
VREF
Operating Ranges
Characteristics Symbol Min Typ. Max Unit
Cathode voltage VKA V
REF ⎯ 36 V
Cathode current IK 1 ⎯ 100 mA
Operating temperature Topr −40 ⎯ 85 °C
Electrical Characteristics
(Unless otherwise specified, Ta = 25°C, IK = 10 mA)
Characteristics Symbol Test Condition Min Typ. Max Unit
Reference voltage VREF V
KA = VREF 2.440 2.495 2.550 V
Deviation of reference input voltage
over temperature VREF (dev) 0°C ≤ Ta ≤ 70°C, VKA = VREF ⎯ 8 17 mV
VREF ≤ VKA ≤ 10 V ⎯ 0.8 2.7 Ratio of change in reference input
voltage to the change in cathode
voltage
ΔVREF/ΔV
10 V ≤ VKA ≤ 36 V ⎯ 0.5 2.0
mV/V
Reference Input current IREF V
KA = VREF ⎯ 1.4 4 μA
Deviation of reference input current
over temperature IREF (dev) 0°C ≤ Ta ≤ 70°C, VKA = VREF,
R1 = 10 kΩ, R2 = ∞ ⎯ 0.3 1.2 μA
Minimum cathode current for
regulation IKmin V
KA = VREF ⎯ 0.4 1.0 mA
Off-State cathode current IKoff V
KA = 36 V, VREF = 0 V ⎯ ⎯ 1.0 μA
Dynamic impedance ⎪ZKA⎪ VKA = VREF, f ≤ 1 kHz,
1 mA ≤ IK ≤ 100 mA ⎯ 0.15 0.5 Ω
The deviation parameters VREF (dev) and IREF (dev) are defined as the
maximum variation of the VREF and IREF over the rated temperature
range.
The average temperature coefficient of the VREF is defined as:
()
Cppm
Ta
6
10
C@25
REF
V
(dev)REF
V
REF
V°
Δ
×
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
°
=α
TA76431F/FR
2009-09-30
4
Test Parameter
(1) VKA = VREF Mode (2) VKA > VREF Mode
(3) OFF-State Mode
Typical Application Circuits
(1) 2.5 V Reference (2) Shunt Regulator
Input VKA
IK
RSD
VREF
Input VKA
RSD
IKoff
VOUT ∼
−
2.5 V
VIN
R1
VOUT
RSD
R2
VIN
GND
1
R
REF
I
2
R
1
R
1
REF
V
OUT
V⋅+
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛+=
R1
Input VKA
IK
RSD
IREF
R2
VREF
1
R
REF
I
2
R
1
R
1
REF
V
KA
V⋅+
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛+=
TA76431F/FR
2009-09-30
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Cathode voltage VKA (V)
IK – VKA
Cathode current IK (mA)
Ambient temperature Ta (°C)
VREF – Ta
Cathode voltage VKA (V)
IK – VKA
Cathode current IK (μA)
Cathode voltage VKA (V)
ΔVREF – VKA
Change in reference voltage ΔVREF (mV)
Ambient temperature Ta (°C)
IKoff – Ta
Off state cathode current IKoff (nA)
Ambient temperature Ta (°C)
IREF – Ta
Reference current IREF (μA)
50
−100
−2.0 −1.0 0 1.0 3.0 4.0 2.0
−50
0
100
150
VKA = VREF
Ta = 25°C
Input VKA
IK
2520
2400
−80 −40 0 40 120 160 80
2440
2480
2560
2600
VREF max = 2550 mV
VKA = VREF
IK = 10 mA Input
VKA
IK
VREF
VREF typ. = 2495 mV
VREF min = 2440 mV
400
−200
−2.0 −1.0 0 1.0 3.0 4.0 2.0
0
200
600
800
VKA = VREF
Ta = 25°C
Input VKA
IK
IK min
−40 0 40 80 120 160
V
KA = 36 V
V
REF = 0 V
Input VKA
IKoff
100
10
1
3
5
30
50
0
4
−40
1
2
3
0 40 80 120
I
K = 10 mA
Input VKA
IK
10 kΩ
IREF
Reference voltage VREF (mV)
−40
0
0 50
−30
−20
−10
10 20 30 40
Input
R1
VKA
IK
VREF
R2
IK = 10 mA
Ta = 25°C
TA76431F/FR
2009-09-30
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Frequency f (Hz)
ZKA – f
Dynamic impedance ZKA (Ω)
Frequency f (Hz)
AV – f
Open loop voltage gain AV (dB)
Time t (μs)
Pulse response
Voltage swing (V)
Ambient temperature Ta (°C)
PD max – Ta
Allowable power dissipation PD max (W)
Load capacitance CL (μF)
Safe operating area
Cathode current IK (mA)
0.1
1
10
50
3
0.3
10 k 100 k 1 M
1 k
30
5
0.5
eo
IK
220 Ω
RS
GND
ei
S
R
i
e
o
e
KA
Z
KA
Z
S
R
i
e
o
e
KA
Z
S
R
KA
Z
KA
Z
S
R
i
e
o
e
・
・
＞
・
=∴
=
+
=
Ta = 25°C
VKA = VREF
1 mA ≤ −IK ≤ 100 mA
3
0
0 1 2 3 5 6 4
1
2
0
5
Output 220 Ω
GND
50 Ω
Pulse
Generator
f = 100 kHz
Input
monitor
Input
Output
20 0 40 60 100 120
1.4
0.6
0
0.2
0.4
0.8
1.0
80 140 160
1.2
125°C/W
250°C/W
(1)
(2)
(1) Mounted on ceramic substate
(250 mm2 × 0.8 mm (t))
(2) Ta = 25°C
10 M1 M 100 k 1 k
−10
0
10
10 k
20
30
40
50
60
IK = 10 mA
Ta = 25°C
IK
220 Ω
10 kΩ 10 kΩ
10 μF
VIN
VOUT
GND
100
0
20
40
60
80
D. Unstable
0.001 0.003 0.03 1 10 3 0.01 0.1
C. Unstable
0.3 5 100 30
StableStable B. Unstable
A. Unstable Test circuit for curve A
IK
CL
150 Ω
Test circuit for curve B, C, D
IK
150 Ω
CL
Ta = 25°C
A
. VKA = VREF
B. VKA = 5 V @IK = 10 mA
C. VKA = 10 V @IK = 10 mA
D. VKA = 15 V @IK = 10 mA
TA76431F/FR
2009-09-30
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Package Dimensions
Weight: 0.05 g (typ.)
TA76431F/FR
2009-09-30
8
RESTRICTIONS ON PRODUCT USE
• Toshiba Corporation, and its subsidiaries and affiliates (collectively “TOSHIBA”), reserve the right to make changes to the information
in this document, and related hardware, software and systems (collectively “Product”) without notice.
• This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with
TOSHIBA’s written permission, reproduction is permissible only if reproduction is without alteration/omission.
• Though TOSHIBA works continually to improve Product’s quality and reliability, Product can malfunction or fail. Customers are
responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and
systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily
injury or damage to property, including data loss or corruption. Before customers use the Product, create designs including the
Product, or incorporate the Product into their own applications, customers must also refer to and comply with (a) the latest versions of
all relevant TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes
for Product and the precautions and conditions set forth in the “TOSHIBA Semiconductor Reliability Handbook” and (b) the
instructions for the application with which the Product will be used with or for. Customers are solely responsible for all aspects of their
own product design or applications, including but not limited to (a) determining the appropriateness of the use of this Product in such
design or applications; (b) evaluating and determining the applicability of any information contained in this document, or in charts,
diagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operating
parameters for such designs and applications. TOSHIBA ASSUMES NO LIABILITY FOR CUSTOMERS’ PRODUCT DESIGN OR
APPLICATIONS.
• Product is intended for use in general electronics applications (e.g., computers, personal equipment, office equipment, measuring
equipment, industrial robots and home electronics appliances) or for specific applications as expressly stated in this document.
Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or
reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious
public impact (“Unintended Use”). Unintended Use includes, without limitation, equipment used in nuclear facilities, equipment used
in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling
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power, and equipment used in finance-related fields. Do not use Product for Unintended Use unless specifically permitted in this
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• Product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any
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any intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise.
• ABSENT A WRITTEN SIGNED AGREEMENT, EXCEPT AS PROVIDED IN THE RELEVANT TERMS AND CONDITIONS OF SALE
FOR PRODUCT, AND TO THE MAXIMUM EXTENT ALLOWABLE BY LAW, TOSHIBA (1) ASSUMES NO LIABILITY
WHATSOEVER, INCLUDING WITHOUT LIMITATION, INDIRECT, CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OR
LOSS, INCLUDING WITHOUT LIMITATION, LOSS OF PROFITS, LOSS OF OPPORTUNITIES, BUSINESS INTERRUPTION AND
LOSS OF DATA, AND (2) DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS RELATED TO
SALE, USE OF PRODUCT, OR INFORMATION, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS
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Japanese Foreign Exchange and Foreign Trade Law and the U.S. Export Administration Regulations. Export and re-export of Product
or related software or technology are strictly prohibited except in compliance with all applicable export laws and regulations.
• Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product.
Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances,
including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of
noncompliance with applicable laws and regulations.
