ST Life.augmented


意法半导体’的单片式开关稳压器具有高达61 V的输入电压能力,在高开关频率下提供了高达4A的输出电流。




L7987L and L7987 buck regulators

New 2A (L7987L) and 3A (L7987) switching regulators designed to meet stringent fail safe requirements of industrial 24VDC systems like programmable logic controllers (PLC):

-  Wide input operating voltage (VIN) from 4.5 V to 61 V and 0.8 V to VIN adjustable output voltage to fit a wide variety of application requirements

-  Adjustable switching frequency from 250 kHz to  1.5 MHz and Low shut down (11 µA typ) and operating (1 mA typ ) quiescent current for high efficiency

-  Adjustable current limitation and Peak current digital frequency fold-back in short-circuit help reduce strain on the power components

- Output voltage sequencing and synchronization improve noise reduction when using multiple ICs

An easy-to-use evaluation board (STEVAL-ISA152V1) based on the L7987 regulator is available to help you configure and evaluate application parameters so you can reach higher efficiency, higher power density and lower standby power designs.

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