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ST777中文資料意法半導(dǎo)體數(shù)據(jù)手冊(cè)PDF規(guī)格書

ST777
廠商型號(hào)

ST777

功能描述

LOW VOLTAGE INPUT, 3-3.3V/5V/ADJUSTABLE OUTPUT DC-DC CONVERTER WITH SYNCHRONOUS RECTIFIER

文件大小

344.48 Kbytes

頁(yè)面數(shù)量

11 頁(yè)

生產(chǎn)廠商 STMicroelectronics
企業(yè)簡(jiǎn)稱

STMICROELECTRONICS意法半導(dǎo)體

中文名稱

意法半導(dǎo)體集團(tuán)官網(wǎng)

原廠標(biāo)識(shí)
數(shù)據(jù)手冊(cè)

下載地址一下載地址二到原廠下載

更新時(shí)間

2025-1-28 20:00:00

ST777規(guī)格書詳情

DESCRIPTION

The ST777/778/779 are dc-dc converters that step-up from low voltage inputs requiring only three external components, an inductor (typically 22μH) and two capacitors. The device include a Sinchronous Rectifier that eliminates the need for an external catch diode, and allows regulation even when the input is greater than the output.

Unlike others step-up DC-DC converters the ST777/778/779’s Sinchronous Rectifier turns off in the shutdown mode, fully disconnecting the output from the source. This eliminates the current drain associated with conventional step-up converters when off or in shutdown. Supply current is 270μA under no load and only 20μA in stand by mode.

■ 1V TO 6V INPUT GUARANTEES START-UP UNDER LOAD

■ MAXIMUM OUTPUT CURRENT OF 300mA

(778 OR 779 ADJUSTED TO 3V)

■ LOAD FULLY DISCONNECTED IN SHUTDOWN

■ TYPICAL EFFICIENCY OF 82

■ INTERNAL 1A POWER SWITCH AND SYNCHRONOUS RECTIFIER

■ ADJUSTABLE CURRENT LIMIT ALLOWS LOW-COST INDUCTORS

■ SUPPLY CURRENT OF 270μA (NO LOAD)

■ SHUTDOWN SUPPLY CURRENT 20μA

■ PACKAGE AVAILABLE: DIP-8 AND SO-8

產(chǎn)品屬性

  • 型號(hào):

    ST777

  • 制造商:

    STMICROELECTRONICS

  • 制造商全稱:

    STMicroelectronics

  • 功能描述:

    LOW VOLTAGE INPUT, 3-3.3V/5V/ADJUSTABLE OUTPUT DC-DC CONVERTER WITH SYNCHRONOUS RECTIFIER

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