STMicroelectronics TS4431
The TS4431 is a four-terminal device dedicated to low voltage Switch Mode Power Supplies (SMPS). It integrates a 1.224V voltage reference, an amplifier, and an open collector output transistor in a single package. The TS4431’s operating mode is similar to the well-known standard voltage reference, the TL431.| Part No. | TS4431 |
|---|---|
| Datasheet | TS4431 Download |
| Manufacturer |  STMicroelectronics |
| Description | 1.224V Open Collector Shunt Voltage Reference |
| Buy | Stock & Price |
DESCRIPTION
It maintains the desired feedback voltage at the REF pin in a closed loop configuration by sinking a current proportional to the error voltage at the REF pin. TS4431 features an open collector transistor with an ultra-low saturation voltage, allowing it to be used in series with the optocoupler in an SMPS architecture to regulate low voltage SMPS. SOT23-5L (Plastic Micropackage) Pin connections (top view) 1 Vc c Sink 5 2 Gnd 3 Nc Ref 4APPLICATIONS
● Low voltage switch mode power supplies● Isolated DC/DC converter
● Computers
● Low voltage discrete regulator Order Codes Part Number TS4431AILT TS4431ILT Accuracy Temperature Range 0.5% 1% -40, +85°C Package SOT23-5 Packing Tape & Reel Marking L288 L275 November 2005 Rev 2 1/8 8
ABSOLUTE MAXIMUM RATINGS
1ABSOLUTE MAXIMUM RATINGS
TS4431 Table 1. Key parameters and their absolute maximum ratings Symbol Parameter Value ISINK Output sink current VCC Supply voltage VSINK Output voltage PD Power Dissipation (1)SOT23-5 TSTD Storage Temperature ESD Human Body Model (HBM) Machine Model (MM) TLEAD Lead Temperature (soldering, 10 seconds) 1.
