L5953_07 datasheet(1/31 Pages) STMICROELECTRONICS

부품명	L5953

상세설명	Multiple switching voltage regulator

PDF	31 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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1 / 31 page

September 2007

Rev 2

1/31

1

L5953

Multiple switching voltage regulator

Features

■ PWM: adjustable 2.5/10V - 1A switching

voltage regulator

■ External POWER MOS ability for output

current enhancement

■ Synchronization function

■ REG1- Linear low drop 3.3/5V - 250mA STBY

voltage regulator (low current consumption)

with RESET

■ REG2- Linear voltage regulator 1.5V to 3.3V

externally adjustable - 300mA maximum

current

■ HSD1 : 500mA High side driver

■ HSD2 : 200mA High side driver

■ SPI Interface

■ SPI Diagnostics HSD1, HSD2

■ Double switching frequency SPI selectable

■ Double inpuT LVW

SPI functions

■ Input controls

– Turn-on/off PWM

– Turn-on/off REG2

– Turn-on/off HSD1

– Turn-on/off HSD2

– Switching frequency selection f1- f2

■ Output functions:

– HSD1 & HSD2 short to gnd, open load and

short to battery (Test mode)

– Thermal warning

Protections

■ Over voltage protection

■ Internal current limiting

■ Thermal shutdown

■ ESD

Description

The L5953 is the integration of one switching

regulator, two linear voltage regulators, two low

voltage warnings and two high side drivers. It has

a stand-by operation mode (low current

consumption) where only the stand-by voltage

regulator plus the low voltage warnings are active.

The other regulators and high side drivers are

controlled by the SPI interface.

PowerSO36

Table 1.

Device summary

Part number

Package

Packing

L5953

PowerSO36

Tray

www.st.com

유사한 부품 번호 - L5953_07

제조업체	부품명	데이터시트	상세설명
STMicroelectronics	L5953	217Kb / 24P	MULTIPLE SWITCHING VOLTAGE REGULATOR Sep-2003

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