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TS431IZT

P1-P3P4-P6P7-P9P10-P12P13-P14
This is information on a product in full production.
March 2013 DocID5558 Rev 10 1/14
14
TS431
Low voltage adjustable shunt reference
Datasheet - production data
Features
Low voltage operation: 1.24 to 6 V
2 %, 1 % and 0.5 % voltage precision
Wide operating range cathode current: 60 µA
to 30 mA
Low output impedance: 0.2
Typically stable for any capacitive loads
ESD protection:
– Human body model: 2 kV
– Machine model: 200 V
100 ppm/°C temperature coefficient
Automotive grade version available
Description
The TS431 is a low-voltage, three-terminal,
programmable shunt voltage reference. The
output voltage can be set to any value between
V
ref
(1.24 V) and 6 V using two external resistors.
The TS431 is able to operate at a lower voltage
(1.24 V) and lower cathode current than the
widely-used TL431 and TL1431 shunt voltage
reference. When driving an optocoupler, the
TS431 is particularly suitable for regulating 3.3 V
switching power supplies.
L
SOT23-5
(Plastic micropackage)
Z
TO92
(Plastic package)
www.st.com
Absolute maximum ratings and operating conditions TS431
2/14 DocID5558 Rev 10
1 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
V
KA
Cathode to anode voltage 10 V
I
k
Continuous cathode current range -20 to +40 mA
I
ref
Reference input current range -0.05 to +3 mA
P
d
Power dissipation
(1)
TO92 package
SOT23-5 package
1. T
junction
= 150 °C, T
amb
= 25 °C with
R
thJA
= 200 °C/W for TO92 package and
R
thJA
= 250 °C/W for SOT23-5L package
625
500
mW
T
stg
Storage temperature range -65 to +150 °C
Table 2. Operating conditions
Symbol Parameter Value Unit
V
KA
Cathode to anode voltage 1.24 to 6 V
I
k
Cathode current
(1)
1. Please refer to Section 3: Application information for more details.
0.06 to 30 mA
T
oper
Operating free air temperature range -40 to +125 °C
DocID5558 Rev 10 3/14
TS431 Electrical characteristics
2 Electrical characteristics
2.1 Definition of output voltage change over temperature range
V
ref
is defined as the difference between the maximum and minimum values obtained over
the full temperature range.
V
ref
= V
ref max
- V
ref min
Figure 1. Output voltage change over temperature range
Table 3. T
amb
= 25°C (unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
ref
Output voltage
V
KA
= V
ref
@ I
k
= 100A
TS431
TS431A
TS431B
1.215
1.228
1.234
1.240 1.265
1.252
1.246
V
V
ref
Output voltage change
(1)
(2)
I
k
= 100A, V
KA
= V
ref
0 < T
amb
< +70°C
-40 < T
amb
< +85°C
-40 < T
amb
< +105°C
-40 < T
amb
< +125°C
9
16
18
21
mV
Ratio of change in reference input
voltage to change in cathode to
anode voltage
I
k
= 10mA
V
KA
= 6V to V
ref
1.8 2.7 mV/V
I
ref
Reference input current I
k
= 10mA 70 160 nA
I
ref
Reference input current deviation
over temperature range
I
k
=10mA, R
1
=10k R
2
=
-40 < T
amb
< +85°C
-40 < T
amb
< +125°C
70
90
160
240
nA
I
min
Minimum cathode current for
regulation
V
KA
= V
ref
40 60 A
I
off
Off-state cathode current V
KA
= 6V, V
ref
= 0 0.001 0.1 A
R
KA
Static impedance V
KA
= V
ref
, I
k
= 0.1 to 15mA 0.2 0.4
1. Limits are 100% production tested at 25°C. Behavior at the temperature range limits is guaranteed through correlation and
by design.
2. See definition below.
Vref
Vka
----------------
T1
T2
T
e
m
p
e
a
t
u
r
e
Vref min.
Vref max.
P1-P3P4-P6P7-P9P10-P12P13-P14

TS431IZT

Mfr. #:
Buy TS431IZT
Manufacturer:
STMicroelectronics
Description:
Voltage References 1.24-6V Adjust Shunt
Lifecycle:
New from this manufacturer.
Delivery:
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