L5987 Buck Regulators

Delivering 3 A in tiny 3 x 3 mm and HSOP8 packages, from STMicroelectronics

Image of STMicroelectronics' L5987 Buck RegulatorsSTMicroelectronics' L5987TR and L5987ATR are integrated switching regulators requiring minimum external components. They are designed for consumer, networking, computer peripheral, industrial, and factory automation applications. The switching frequency is internally fixed at 250 kHz and can be programmed up to 1 MHz, reducing external component count and overall board size. These devices are an extension of the L598x family.

Features
  • Input voltage: 2.9 V to 18 V
  • Output voltage adjustable from 0.6 V to Vin
  • Output current 3 A
  • Switching frequency 250 kHz fixed or adjustable to 1 MHz
  • Device is synchronizable to an external source
  • Internal soft-start and inhibit
  • Peak current limit for embedded P-channel MOSFET handles short circuit and overload conditions
  • Overcurrent and thermal protection
Applications
  • Modems, DC-DC converter modules
  • Printers, hard disk and optical storage devices, audio and graphic cards
  • Battery chargers and portable data terminals
  • Notebooks and netbook computers
  • Set top boxes, DVD players, and recorders

Related Parts

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC REG BUCK ADJUSTABLE 3A 8HSOPL5987ATRIC REG BUCK ADJUSTABLE 3A 8HSOP76 - ImmediateView Details
Published: 2013-07-02