SC4431CSK-2TR集成電路（IC）的電壓基準(zhǔn)規(guī)格書PDF中文資料

SC4431CSK-2TR屬于集成電路（IC）的電壓基準(zhǔn)。由Semtech Corporation制造生產(chǎn)的SC4431CSK-2TR電壓基準(zhǔn)產(chǎn)品屬于基準(zhǔn)電壓源系列，可通過相對較不穩(wěn)定的電源提供穩(wěn)定的電勢，電壓值始終保持恒定，以便在測量、控制和類似應(yīng)用中用作比較的標(biāo)準(zhǔn)。其功能行為可能與用于大功率調(diào)節(jié)的線性穩(wěn)壓器相似，但基準(zhǔn)電壓源器件卻不適合用于此類用途。用作比較標(biāo)準(zhǔn)時，若輸出電流容量或?qū)嶋H負(fù)載電流增大，其性能通常會降低。

Description

The SC4431 is a four terminal device for regulating an isolated power supply with output voltages down to 1.5V.

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 the device to function in conjunction with an opto-isolator. SC4431 achieves this by having seperate supply and output pins, allowing the output to sink current at voltages as low as 0.1V, while the supply pin still has sufficient voltage for the device to function. In this way, allowing for a 1.4V drop through an opto-isolator diode, regulation down to 1.5V out can be achieved.

Features

◆ Open Collector output drives Optoisolator with as little as 1.5V input voltage

◆ Trimmed bandgap design - initial accuracies to + 0.5

◆ 40mA drive capability

◆ Regulates output as low as 50mV

◆ Wide supply voltage range - 1.5V to 15V

◆ Low supply current - typically 110μA

◆ Full industrial temperature range

◆ SOT-23 5 lead package

Applications

◆ Telecom Power Supplies

◆ Opto driver for very low output voltage (1.5V) isolated power supplies

◆ Battery operated applications

◆ Point of use power supplies