TA76431F/FR
TOSHIBA Bipolar Linear Integrated Circuit
Silicon Monolithic
TA76431F, TA76431FR
Adjustable Precision Shunt Regulator
Features
•
•
•
•
•
•
Precision Reference Voltage: V
REF
= 2.495 V ± 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.)
Small Flat Package
TA76431FR is a new Toshiba shunt regulator.
This device’s pin assignment is the reverse of that of the
TA76431F.
Weight: 0.05 g (typ.)
Functional Block Diagram
Reference (REF)
Cathode (K)
Circuit Symbol
Cathode (K)
Reference (REF)
Anode (A)
Anode (A)
This IC contains electrostatic sensitive elements. Please take care to avoid generating static electricity when
handling these devices.
Marking
(1) TA76431F
Part No. (or abbreviation code)
(2) TA76431FR
Part No. (or abbreviation code)
A
Lot No.
(weekly code)
S
A line indicates
lead (Pb)-free package or
lead (Pb)-free finish.
B
Lot No.
(weekly code)
S
A line indicates
lead (Pb)-free package or
lead (Pb)-free finish.
Pin Assignment
No.
1
2
1
2
3
3
(1) TA76431F
Cathode (K)
Anode (A)
Reference (REF)
(2) TA76431FR
Reference (REF)
Anode (A)
Cathode (K)
1
2006-11-06
TA76431F/FR
How to Order
No.
(1)
Product No.
TA76431F
TA76431F (TE12L)
TA76431FR
TA76431FR (TE12L)
PW-MINI (SOT-89) (surface-mount type)
Package Type
Packing Type
On cut tape (TE12L): 100/tape section
Embossed tape: 1000/tape
On cut tape (TE12L): 100/tape section
Embossed tape: 1000/tape
Minimum
Order
100
1 tape
100
1 tape
(2)
Equivalent Circuit
Cathode
R
3
Q
4
Q
3
C
1
Q
2
Reference
Q
10
Q
11
R
5
Q
5
C
2
R4
R
6
R
7
R
2
Q
1
Q
6
R
9
Q
9
R
8
Anode
Absolute Maximum Ratings
(Ta
=
25°C)
Characteristics
Cathode voltage
Cathode current
Reference voltage
Reference current
Reference-anode reverse current
Power dissipation (Ta
=
25°C)
Operating temperature
Storage temperature
Symbol
V
KA
I
K
V
REF
I
REF
−I
REF
P
D
T
opr
T
stg
2
Rating
37
−100~150
7
50
10
500
1000 (Note)
−40~85
−55~150
Unit
V
mA
V
μA
mA
mW
°C
°C
Note 1: Mounted on ceramic substrate (250 mm
×
0.8 mm t)
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).
R
1
Q
8
Q
7
2
2006-11-06
TA76431F/FR
Recommended Operating Conditions
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
Electrical Characteristics
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
(Unless otherwise specified, Ta
=
25°C, I
K
=
10 mA)
Symbol
V
REF
V
REF (dev)
ΔV
REF
/ΔV
I
REF
I
REF (dev)
I
Kmin
I
Koff
⎪Z
KA
⎪
V
KA
=
V
REF
0°C
<
Ta
<
70°C, V
KA
=
V
REF
=
=
V
REF
<
V
KA
<
10 V
=
=
10 V
<
V
KA
<
36 V
=
=
V
KA
=
V
REF
0°C
<
Ta
<
70°C, V
KA
=
V
REF
,
=
=
R
1
=
10 kΩ, R
2
= ∞
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
= =
Test Condition
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
mV/V
μA
μA
mA
μA
Ω
⎛
VREF (dev)
⎞
⎜
⎟ ×
10 6
⎜
VREF @25
°
C
⎟
⎠
(
ppm
°
C
)
α
VREF
= ⎝
Δ
Ta
min
ΔTa
3
2006-11-06
V
REF (dev)
V
REF
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:
max
TA76431F/FR
Test Parameter
(1) V
KA
=
V
REF
Mode
R
SD
I
K
(2) V
KA
>
V
REF
Mode
R
SD
R
1
Input
V
KA
Input
V
KA
I
K
I
REF
V
REF
V
REF
⎛
R
⎞
VKA
=
VREF
⎜
1
+
1
⎟ +
IREF
⋅
R1
⎜
R2
⎟
⎝
⎠
(3) OFF-State Mode
R
SD
I
Koff
Input
V
KA
Typical Application Circuits
(1) 2.5 V Reference
V
IN
(2) Shunt Regulator
R
SD
R
1
V
IN
V
OUT
∼
2.5 V
−
R
2
V
OUT
GND
⎛
R
⎞
VOUT
=
VREF
⎜
1
+
1
⎟ +
IREF
⋅
R1
⎜
R2
⎟
⎝
⎠
R
2
4
2006-11-06
TA76431F/FR
IK – VKA
150
Input
VKA
IK
2600
VREF – Ta
VKA
=
VREF
VKA
Input
VREF
VREF max
=
2550 mV
2520
IK
(mV)
IK
=
10 mA
2560
(mA)
100
50
VKA
=
VREF
Ta
=
25°C
Reference voltage V
REF
Cathode current
I
K
0
2480
VREF typ.
=
2495 mV
−50
2440
VREF min
=
2440 mV
2400
−80
−100
−2.0
−1.0
0
1.0
2.0
3.0
4.0
−40
0
40
80
120
160
Cathode voltage
V
KA
(V)
Ambient temperature Ta (°C)
IK – VKA
Change in reference voltage
ΔV
REF
(mV)
800
Input
VKA
IK
0
ΔV
REF – VKA
(μA)
600
−10
I
K
400
VKA
=
VREF
Ta
=
25°C
Cathode current
−20
Input
VKA
IK
200
IK min
−30
VREF
0
R1
R2
IK
=
10 mA
Ta
=
25°C
−200
−2.0
−1.0
0
1.0
2.0
3.0
4.0
−40
0
10
20
30
40
50
Cathode voltage
V
KA
(V)
Cathode voltage
V
KA
(V)
IKoff – Ta
100
4
Input
50
30
VKA
=
36 V
VREF
=
0 V
10
5
3
VKA
Input
IREF – Ta
VKA
10kΩ
IK
I
Koff
(nA)
I
REF
(μA)
IKoff
3
IREF
IK
=
10 mA
2
Off state cathode current
Reference current
1
1
−40
0
40
80
120
160
0
−40
0
40
80
120
Ambient temperature Ta (°C)
Ambient temperature Ta (°C)
5
2006-11-06
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