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1.24 V programmable shunt voltage reference
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TS3431
1.24 V programmable shunt voltage reference
Datasheet − production data Features
■ Adjustable output voltage: 1.24 to 24 V ■ Several precision levels @ 25°C ± 2%, ± 1%,
± 0.5% and ± 0.25% ■ Sink current capability: 0.4 to 100 mA ■ Industrial temperature range: -40°C to +125°C ■ Performance compatible with industry
standard TL431 L
SOT23-3L
(Plastic micropackage) Applications
Computers ■ Instrumentation ■ Battery chargers ■ Switch mode power supply ■ Battery operated equipment Reference 1
TS3431 ■ Cathode 3 Anode 2 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 1.24 V and 24 V with an
external resistor bridge. SOT23-3
(top view) Available in SOT23-3 surface mount package, it
can be used in application designs where space
saving is critical. August 2012
This is information on a product in full production. Doc ID 10174 Rev 4 1/13
www.st.com 13 Contents TS3431 Contents
1 Block diagram 3 2 Absolute maximum ratings . 4 3 Electrical characteristics . 5 4 Package mechanical data . 9 5 Ordering information . 11 6 Revision history . 12 2/13 Doc ID 10174 Rev 4 TS3431 1 Block diagram Block diagram
Figure 1. Block diagram
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