TS431
Adjustable shunt voltage reference IC (automotive for SOT23-5)
Datasheet
-
production data
Description
Z
TO92
(plastic package)
The TS431 is a low-voltage, three-terminal,
adjustable 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)
Features
AEC-Q100 qualified (SOT23-5)
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
Ω
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
June 2018
This is information on a product in full production.
DocID5558 Rev 12
1/16
www.st.com
Contents
TS431
Contents
1
2
3
Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Definition of output voltage change over temperature range . . . . . . . . . . . . . . . . . 5
4
5
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1
5.2
5.3
SOT23-5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
TO92 (tape ammopack and tape and reel) package information . . . . . . . 12
TO92 (bulk) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6
7
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2/16
DocID5558 Rev 12
TS431
Pinout
1
Pinout
Figure 1. Pinout Z TO92 (plastic package)
Figure 2. Pinout L SOT23-5 (plastic micropackage)
DocID5558 Rev 12
3/16
16
Absolute maximum ratings and operating conditions
TS431
2
Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Symbol
V
KA
I
k
I
ref
P
d
T
stg
Parameter
Cathode to anode voltage
Continuous cathode current range
Reference input current range
Power dissipation
TO92 package
SOT23-5 package
Storage temperature range
Value
10
-20 to +40
-0.05 to +3
625
500
-65 to +150
Unit
V
mA
mA
mW
°C
Table 2. Operating conditions
Symbol
V
KA
I
k
T
oper
Parameter
Cathode to anode voltage
Cathode current
(1)
Operating free air temperature range
Value
1.24 to 6
0.06 to 30
-40 to +125
Unit
V
mA
°C
1. Please refer to
Section 4: Application information
for more details.
Table 3. Thermal data
Symbol
R
thJC
R
thJA
Parameter
Thermal resistance junction to case
Thermal resistance junction to ambient
TO-92
57
200
SOT23-5L
136
250
Unit
°C/W
°C/W
4/16
DocID5558 Rev 12
TS431
Electrical characteristics
3
Electrical characteristics
Table 4. T
amb
= 25 °C (unless otherwise specified)
Symbol
V
ref
Parameter
Output voltage
V
KA
= V
ref
at I
k
= 100
A
(1) (2)
Test conditions
TS431
TS431A
TS431B
0 < T
amb
< +70 °C
-40 < T
amb
< +85 °C
-40 < T
amb
< +105 °C
-40 < T
amb
< +125 °C
I
k
= 10 mA
V
KA
= 6 V to V
ref
I
k
= 10 mA
I
k
= 10 mA, R
1
= 10 k R
2
=
-40 < T
amb
< +85 °C
-40 < T
amb
< +125 °C
V
KA
= V
ref
V
KA
= 6 V, V
ref
= 0
V
KA
= V
ref
, I
k
= 0.1 to 15 mA
Min.
1.215
1.228
1.234
-
-
-
-
-
-
-
-
-
-
-
Typ.
1.240
1.240
1.240
-
-
-
-
1.8
70
70
90
40
0.001
0.2
Max.
1.265
1.252
1.246
9
16
18
21
2.7
160
160
240
60
0.1
0.4
Unit
V
V
ref
Output voltage change
I
k
= 100
A,
V
KA
= V
ref
mV
Vref
---------------
-
Vka
Ratio of change in reference input
voltage to change in cathode to
anode voltage
Reference input current
Reference input current deviation
over temperature range
Minimum cathode current for
regulation
Off-state cathode current
Static impedance
mV/V
nA
nA
I
ref
I
ref
I
min
I
off
R
KA
A
A
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.
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 3. Output voltage change over temperature range
Vref max.
Vref min.
T1
T2
Temperature
DocID5558 Rev 12
5/16
16
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
