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。
该IC产品系列由专用产品组成,能够满足每一个市场的需求:HV(高压)技术、工业和汽车应用所需的高可靠性和耐用性、小型化、任何负载下的高效率,以及消费类和计算机产品所需的高性能。

这些器件都嵌入了全套保护功能(过流、过压和过热),从而增加了MTBF(平均无故障时间),减少了外部元件的数量。

提供多种封装选项,从而为不同的应用实现了小型化和高散热性能。
 

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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