器件名称:
TS4431ILT
功能描述:
1.224V Open Collector Shunt Voltage Reference
文件大小:
162.05KB 共8页
简 介:
TS4431 1.224V Open Collector Shunt Voltage Reference ■ ■ ■ ■ ■ Internal 1.224V ±0.5% precision Low output saturation voltage 75 mV max between SINK and GND Low current consumption: 250A Industrial temperature range: -40 to +85°C 100ppm/°C temperature coefficient Pin connections (top view) SOT23-5L (Plastic Micropackage) Description 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. 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. 1 Vc c 2 Gnd 3 Nc Sink 5 Ref 4 Applications ■ ■ ■ ■ Low voltage switch mode power supplies Isolated DC/DC converter Computers Low voltage discrete regulator Order Codes Part Number TS4431AILT TS4431ILT Accuracy 0.5% -40, +85°C 1% SOT23-5 Tape & Reel L275 Temperature Range Package Packing Marking L288 November 2005 Rev 2 1/8 www.st.com 8 Absolute Maximum Ratings TS4431 1 Absolute Maximum Ratings Table 1. Symbol ISINK VCC VSINK PD TSTD ESD Machine Model (MM) TLEAD Lead Temperature (sold……
