TS3431_07 STMICROELECTRONICS [STMicroelectronics], TS3431_07 Datasheet

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TS3431_07

Manufacturer Part Number
TS3431_07
Description
1.24V programmable shunt voltage reference
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
Features
Applications
Description
The TS3431 is a programmable shunt voltage
reference with guaranteed temperature stability
over the entire operating temperature range
(-40°C to +125°C). The output voltage can be set
to any value between 1.24V and 24V with an
external resistor bridge.
Available in SOT23-3 surface mount package, it
can be used in application designs where space
saving is critical.
June 2007
Adjustable output voltage: 1.24 to 24V
Several precision levels @ 25°C
±2%, ±1%, ±0.5% and ±0.25%
Sink current capability: 0.4 to 100mA
Industrial temperature range: -40°C to +125°C
Performance compatible with industry
standard TL431
Computers
Instrumentation
Battery chargers
Switch mode power supply
Battery operated equipment
1.24V programmable shunt voltage reference
Rev 3
Reference
Cathode
(Plastic micropackage)
SOT23-3L
(top view)
SOT23-3
2
1
L
3
TS3431
Anode
www.st.com
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TS3431_07 Summary of contents

Page 1

Features ■ Adjustable output voltage: 1.24 to 24V ■ Several precision levels @ 25°C ±2%, ±1%, ±0.5% and ±0.25% ■ Sink current capability: 0.4 to 100mA ■ Industrial temperature range: -40°C to +125°C ■ Performance compatible with industry standard TL431 ...

Page 2

Block diagram 1 Block diagram Figure 1. Block diagram 2 Absolute maximum ratings Table 1. Absolute maximum ratings (AMR) Symbol V Cathode to anode voltage KA I Reverse breakdown current K I Reference current REF P Power dissipation d T ...

Page 3

TS3431 3 Electrical characteristics Table 25°C (unless otherwise specified) amb Symbol Parameter V Reference input voltage I K Variation of reference input voltage ΔV K over temperature T Temperature coefficient C I Minimum operating current Kmin Ratio ...

Page 4

Electrical characteristics Figure 2. Reference voltage vs. temperature 1.250 1.245 1.240 1.235 1.230 - Temperature (°C) Figure 4. Cathode voltage vs cathode current Figure 5. 1.5 T=-40°C 1.0 T=+25°C T=+125°C 0.5 0.0 0.0 0.1 0.2 Cathode current I ...

Page 5

TS3431 Figure 8. Off-state current vs temperature 300 200 100 0 - Temperature (°C) Figure 10. Ratio of change in reference input voltage to change in V temperature 2.0 1.5 1.0 0.5 0.0 - Temperature (°C) ...

Page 6

Electrical characteristics Figure 14. Pulse response at I 5.0 Input Voltage . . . 2.5 Output voltage . . . 0 Time (µs) Figure 16. Phase and gain vs frequency 1000 ...

Page 7

TS3431 4 Package information In order to meet environmental requirements, STMicroelectronics offers these devices in ® ECOPACK packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the ...

Page 8

Package information Figure 19. SOT23-3L package mechanical data Ref 8/10 Dimensions Millimeters Min. Typ. Max. 0.890 1.120 0.010 0.100 0.880 0.950 1.020 0.300 0.500 0.080 0.200 2.800 ...

Page 9

TS3431 5 Ordering information s Table 4. Order codes Part number TS3431ILT TS3431AILT TS3431BILT TS3431CILT 6 Revision history Date 1-Jan-2004 1-Dec-2004 26-Jun-2007 Temperature range -40°C, +125°C Revision 1 Initial release. Specific content changes as follows: – CI version added in ...

Page 10

Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any ...

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