L5987 Buck Regulators

Delivering 3A in Tiny 3x3mm and HSOP8 Packages - Now Available at Digi-Key

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 250kHz and can be programmed up to 1MHz, reducing external component count and overall board size. These devices are an extension of the L598x family.

Features Applications
  • Input voltage 2.9V to 18V
  • Output voltage adjustable from 0.6V to Vin
  • Output current 3A
  • Switching frequency 250kHz fixed or adjustable to 1MHz
  • 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
  • Notebook and netbook computers
  • Set top boxes, DVD players and recorders
  • Battery chargers, portable data terminals
  • Modems, DC-DC converter modules
  • Printers, hard disk and optical storage devices, audio and graphic cards

Related Parts

ImageManufacturer Part NumberDescriptionPackagingPart StatusFunctionAvailable Quantity
L5987ATR datasheet linkIC REG BUCK ADJ 3A 8HSOPL5987ATRIC REG BUCK ADJ 3A 8HSOPCut Tape (CT)ActiveStep-Down5063 - Immediate
L5987ATR product page link
L5987TR datasheet linkIC REG BUCK ADJ 3A 8VFQFPNL5987TRIC REG BUCK ADJ 3A 8VFQFPNCut Tape (CT)ActiveStep-Down3150 - Immediate
L5987TR product page link
Published: 2013-07-02