SC4431 - Semtech Corporation

SC4431 SHUNT REGULATOR WITH OPEN COLLECTOR OR OUTPUT

The SC4431 is a four terminal device for regulating an isolated power supply with very low output voltage. It is intended to be used as a replacement for three terminal shunt regulators such as SC431L where the output voltage is too low for them to function in conjunction with an opto-isolator. It achieves this by having seperate supply and output pins, allo.

Features

•= Trimmed bandgap design - initial accuracies to
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•= + 0.5% 40mA drive capability Wide supply voltage range - 1.5V to 15V Low supply current - typically 110µA Full industrial temperature range APPLICATIONS
•= Opto driver for very low output voltage isolated power supplies ORDERING INFORMATION Part Number (1)(2) Package SOT-23-5 SC4431CSK-X.TR Notes: (1) Where “-X” denotes initial reference voltage tolerance. Available options are ±0.5% (-.5), ±1% (-1) and ±2% (-2). (2) Only available in tape and reel packaging. A reel contains 3000 devices. TYPICAL APPLICATION CIRCUIT T1 VIN Pr.