SGS Thomson Microelectronics TS431ILT, TS431IZ, TS431AIZ, TS431AILT, TS431 Datasheet
LOW VOLTAGEADJUSTABLE SHUNTREFERENCE
.LOW VOLTAGEOPERATION: 1.24TO 6V
.2% and 1%VOLTAGEPRECISION
.WIDE RANGECATHODE CURRENT : 25µA
TO 30mA
.LOW OUTPUTIMPEDANCE : 0.25W
.HIGH STABILITY WHILE OPERATING WITH
CAPACITIVE LOAD
.ESD PROTECTION:
5kV (HumanBody Model)
200V (MachineModel)
.OPTIMIZED FOR HIGH TEMPERATURES
DESCRI PT ION
TheTS431isa threeterminalsprogrammableshunt
VoltageReferenceoptimizedforhightemperatures.
However, it can operatefrom -40oC up to +125oC.
Theoutputvoltageisset by two externalresistorsto
any value between 1.24 and 6V. When driving an
optocoupler, the TS431 is particularly interestingto
regulate 3.3V switching powersupplies.
ORDER CODES
Part
Number
TS431I -40
TS431AI -40
Temperature
Range
o
C, +125oC
o
C, +125oC
Z
TO92
(PlasticPackage)
L
SOT23-5
Package
ZL
••
••
TS431
SOT23
Marking
L272
L271
PIN CON NE CT IONS (top view)
TO92
(Top view)
1
2
3
March2000
Cathode
Anod e
Refe re nce
NC
NC*
SOT23-5L
(Top view)
1
2
3
* Do not connect this pin or
conne ct it to ground
Anode
5
ReferenceCa thode
4
1/8
TS4 31
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
KA
I
K
I
ref
P
T
oper
T
stg
OPERATING CONDITIONS
Symbol Parameter Value Unit
V
KA
I
K
TS431
ELECTRICAL CHARACTERISTICS T
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
ref
∆V
ref
∆∆V
ref
|
V
KA
Iref Reference Input Current I
∆I
ref
I
min
I
off
|Z
| Dynamic Impedance VKA=V
KA
Notes : 1. ∆V
Cathode to Anode Voltage 10 V
Continuous Cathode Current Range -20 to +40 mA
Reference Input Current Range -0.05 to +3 mA
Power dissipation, TO92 package @ T
d
Power dissipation, SO23-5 package @ T
amb.
=25oC
amb.
=25oC
625
500
Operating Free-air Temperature Range -40 to +125
Storage Temperature Range -65 to +150
Cathode to Anode Voltage V
to 6 V
ref
Cathode Current 0.025 to 30 mA
=25oC (unless otherwise specified)
amb
Output Voltage
V
KA=Vref@Ik
= 100µA
Output Voltage Change - note 1
100µA, VKA=V
I
K=
Ratio of Change in Reference Input
|
Voltage to Change in Cathode to
ref
Anode Voltage
Reference Input Current Deviation
Over Temperature Range
Minimum Cathode Current for Regulation
Off-State Cathode Current VKA= 6V, V
is defined as the difference between the maximum and minimum values obtained over the full temperature
ref
range.
∆V
=V
ref max.-Vref min
ref
T
=25oC 1.215 1.240 1.265 V
amb
0 < Tamb < +70oC
0<T
0<T
-20 < T
-40 < T
-40 < T
I
K
V
KA
K
< +105oC
amb
< +125oC
amb
< +105oC
amb
< +85oC
amb
< +125oC
amb
= 10mA
=6VtoV
ref
= 10mA 30 100 nA
IK= 10mA
= 10kΩ
R
1
= ∝
R
2
V
refmax.
VKA=V
I
ref
ref,f<
= 0.1 to 15mA
K
= 0 0.001 0.1
ref
1kHz
mW
o
C
o
C
15
20
25
30
35
40
2.7 mV/V
30 60 nA
25 40
0.25 0.4
mV
µA
µA
Ω
2/8
V
ref min .
T1
T2
Temperature
TS431
TS431A
ELECTRICAL CHARACTERISTICS T
Symbol Parameter Test Conditions Min. Typ. Max. Unit
|
V
∆V
∆∆V
∆I
|Z
Output Voltage
ref
V
KA=Vref@Ik
Output Voltage Change - note 1
ref
ref
V
KA
100µA, VKA=V
I
K=
Ratio of Change in Reference Input
|
Voltage to Change in Cathode to
Anode Voltage
= 100µA
ref
Iref Reference Input Current I
Reference Input Current Deviation
ref
Over Temperature Range
I
Minimum Cathode Current for
min
Regulation
Off-State Cathode Current VKA= 6V, V
I
off
| Dynamic Impedance VKA=V
KA
=25oC (unless otherwise specified)
amb
T
=25oC 1.228 1.240 1.252 V
amb
0 < Tamb < +70oC
0<T
0<T
-20 < T
-40 < T
-40 < T
I
K
V
KA
K
IK= 10mA
R
R
VKA=V
I
K
< +105oC
amb
< +125oC
amb
< +105oC
amb
< +85oC
amb
< +125oC
amb
= 10mA
=6VtoV
ref
= 10mA 30 100 nA
30 60 nA
= 10kΩ
1
= ∝
2
ref
= 0 0.001 0.1
ref
1kHz
ref,f<
= 0.1 to 15mA
25 40
0.25 0.4
mV
15
20
25
30
35
40
2.7 mV/V
µA
µA
Ω
Notes : 1. ∆V
range.
∆V
ref
is defined as the difference between the maximum and minimum values obtained over the full temperature
ref
=V
ref max.-Vref min.
V
V
ref max.
refmin.
T1
T2
Temperature
3/8
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