TA76431S
TOSHIBA Bipolar Linear Integrated Circuit
Silicon Monolithic
TA76431S
Adjustable Precision Shunt Regulator
Features
Precision reference voltage: V
REF
= 2.495 V ± 2.2%
Small temperature coefficient: |αV
REF
| = 46 ppm/°C
Adjustable output voltage: V
REF
≤
V
OUT
≤
36 V
Low dynamic output impedance: |Z
KA
| = 0.15
Ω
(Typ.)
Pin Assignment
Marking side
1
REF
2
A
3
K
Weight: 0.36 g (typ.)
Functional Block Diagram
Circuit Symbol
This IC contains electrostatic sensitive elements.
Please handle with caution.
Marking
TA76
431S
Part No. (or abbreviation code)
Lot No.
Note 1
Note 1: A line under a Lot No. identifies the indication of product Labels.
Not underlined: [[Pb]]/INCLUDES > MCV
Underlined: [[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.
1
2009-09-30
TA76431S
Equivalent Circuit
Absolute Maximum Ratings
(Ta = 25°C)
Characteristics
Cathode voltage
Cathode current
Reference voltage
Reference current
Reference-anode reverse current
Power dissipation
Operating temperature
Storage temperature
Ta = 25°C
Symbol
V
KA
I
K
V
REF
I
REF
−I
REF
P
D
T
opr
T
stg
Rating
37
−100
to 150
7
50
10
800
−40
to 85
−55
to 150
Unit
V
mA
V
μA
mA
mW
°C
°C
Note 2: 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).
Operating Ranges
Characteristics
Cathode voltage
Cathode current
Operating temperature
Symbol
V
KA
I
K
T
opr
Min
V
REF
1
−40
Typ.
―
―
―
Max
36
100
85
Unit
V
mA
°C
2
2009-09-30
TA76431S
Electrical Characteristics
(Unless otherwise specified, Ta = 25°C, I
K
= 10 mA)
Characteristics
Reference voltage
Deviation of reference input voltage
over temperature
Ratio of change in reference input
voltage to the change in cathode
voltage
Reference input current
Deviation of reference input current
over temperature
Minimum cathode current for
regulation
Off-state cathode current
Dynamic impedance
Symbol
V
REF
Test Condition
V
KA
= V
REF
Min
2.440
―
―
―
―
―
―
―
―
Typ.
2.495
8
0.8
0.5
1.4
0.3
0.4
―
0.15
Max
2.550
17
2.7
2.0
4
1.2
1.0
1.0
0.5
Unit
V
mV
V
REF (dev)
0°C
≤
Ta
≤
70°C, V
KA
= V
REF
(Note 3)
ΔV
REF
/ΔV
I
REF
V
REF
≤
V
KA
≤
10 V
10 V
≤
V
KA
≤
36 V
V
KA
= V
REF
mV/V
μA
μA
mA
μA
Ω
I
REF (dev)
0°C
≤
Ta
≤
70°C, V
KA
= V
REF
(Note 3) R
1
= 10 kΩ, R
2
=
∞
I
Kmin
I
Koff
|Z
KA
|
V
KA
= V
REF
V
KA
= 36 V, V
REF
= 0 V
V
KA
= V
REF
, f
≤
1 kHz
1 mA
≤
I
K
≤
100 mA
Note 3: The deviation parameters V
REF (dev)
and I
REF (dev)
are defined as
the maximum variation of the V
REF
and I
REF
over the rated
temperature range.
The average temperature coefficient of the V
REF
is defined as:
3
2009-09-30
TA76431S
Test Parameter
(1) V
KA
= V
REF
mode
(2) V
KA
> V
REF
mode
(3) Off-state mode
Typical Applications
(1) 2.5 V reference
(2) Shunt regulator
4
2009-09-30
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