TL432
PROGRAMMABLE PRECISION REFERENCES
DEVICE DESCRIPSION
The TL432 is a three-terminal Shunt Voltage Reference providing a
highly accurance 1.24V. The TL432 thermal stability and wide operating
current, makes is sritable for all variety of applications that are looking
for a low cost solution with high performance.
FEATURES
Low dynamic output impedance
The effective temperature compensation in the working
range of full temperature
Low output noise voltage
Fast on -state response
Sink current capability of 0.1mA to100mA
APPLICATION
Shunt Regulator
High-Current Shunt Regulator
Precision Current Limiter
SOT-23
1. REFERENCE
2. CATHODE
3. ANODE
ABSOLUTE MAXIMUM RATINGS (Operating temperature rangeapplies unless otherwise specified)
Parameter
Cathode Voltage
Cathode Current Range (continuous)
Reference lnput Current Range
Power Dissipation
Thermal Resistance from Junction to Ambient
Operating Temperature
Junction Temperature
Storage Temperature
Symbol
V
KA
I
KA
I
ref
P
D
R
θJA
T
opr
T
J
T
stg
Value
18
100
6
350
357
-20~+85
150
-65~+150
Units
V
mA
μA
mW
℃/W
℃
℃
℃
１
JinYu
semiconductor
www.htsemi.com
Ｄ½½½：２０１３／０５
TL432
ELECTRICAL CHARACTERISTICS (T
a
=25℃ unless otherwise specified)
Parameter
Reference input voltage (Fig 1)
Deviation of reference voltage over full
temperature range (Fig 1)
Ratio of change in reference input voltage to
the change in cathode voltage (Fig 2)
Deviation of reference input current over full
temperature range (Fig 2)
Minimum cathode current for regulation
(Fig 1)
Off-state cathode current(Fig 3)
Dynamic impedance
Symbol
V
ref
△
V
ref(DEV)
△
V
ref
/
△
V
KA
△
l
ref
/
△
T
I
KA(min)
I
off
Z
KA
Test
conditions
Min
1.2214
Typ
Max
1.2586
16
2.4
0.6
0.1
0.5
0.5
Unit
V
mV
mV/V
μA
mA
μA
Ω
V
KA
=V
REF
, I
KA
=10mA
V
KA
=V
REF
, I
KA
=10mA
0℃≤T
a
≤70℃
I
KA
=10mA,
△
V
KA
=1.25V~15V
l
KA
=10mA, R
1
=10KΩ,
R
2
=∞, 0℃≤T
a
≤70℃
V
KA
=V
REF
V
KA
=15V,V
REF
=0
V
KA
=V
REF,
l
KA
=0.1 ~20mA,
f≤1.0KHz
CLASSIFICATION OF V
ref
Rank
Range
0.5%
1.2338~1.2462
1%
1.2276~1.2524
1.5%
1.2214-1.2586
Figure 1. Test Circuit for VKA = Vref
Input
VKA
Figure 2. Test Circuit for VKA > Vref
Input
R1
Iref
IK
VKA
Figure 3. Test Circuit for Ioff
Input
Ioff
VKA
IK
Vref
R2
Vref
V
KA
+
V
ref
1
)
R1
)
I
ref
S
R1
R2
２
JinYu
semiconductor
www.htsemi.com
Ｄ½½½：２０１３／０５
TL432
Typical Characteristics
100
Cathode Current versus
Cathode Voltage
(mA)
50
I
K
, CATHODE CURRENT
0
-50
V
KA
=V
ref
-100
-1.5
-1.0
-0.5
0.0
0.5
1.0
T
a
=25
℃
1.5
V
KA
, CATHODE VOLTAGE
(V)
Cathode Current versus
Cathode Voltage
400
KA
KA
(uA)
I
K
, CATHODE CURRENT
300
200
I
KA(min)
100
0
ref
-100
V
KA
=V
ref
-0.5
0.0
0.5
1.0
-200
-1.0
T
a
=25
℃
1.5
V
KA
, CATHODE VOLTAGE
(V)
Test Circuit for V
KA
=V
ref
1300
Reference Input Voltage versus
Ambient Temperature
(mV)
V
ref
, REFERENCE INPUT VOLTAGE
1275
1250
1225
1200
V
KA
=V
ref
1175
-40
-20
0
20
40
60
80
I
K
=10mA
100
T
a
, AMBIENT TEMPERATURE
(
℃
)
３
JinYu
semiconductor
www.htsemi.com
Ｄ½½½：２０１３／０５
TL432
Change in Reference Input
Voltage versus Cathode Voltage
I
K
=10mA
T
a
=25
℃
-4
0
△
V
ref
, REFERENCE INPUT VOLTAGE
(mV)
-8
-12
-16
-20
0
3
6
9
12
15
Test Circuit for V
KA
=V
ref
(1+R1/R2)+R1*I
ref
V
KA
, CATHODE VOLTAGE
(V)
Reference Input Current versus
Ambient Temperature
500
(nA)
I
ref
, REFERENCE INPUT CURRENT
400
300
200
100
I
K
=10mA
0
-40
R
1
=10KΩ
-20
0
20
40
60
80
100
Test Circuit for I
ref
T
a
, AMBIENT TEMPERATURE
(
℃
)
Off-State Cathode Current
versus Ambient Temperature
40
(nA)
I
off
, OFF-STATE CATHODE CURRENT
35
30
25
20
15
10
5
V
KA
=15V
V
ref
=0V
0
-40
-20
0
20
40
60
80
100
Test Circuit for I
off
T
a
, AMBIENT TEMPERATURE
(
℃
)
４
JinYu
semiconductor
www.htsemi.com
Ｄ½½½：２０１３／０５
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