LX2205 データシートの表示（PDF） - Microsemi Corporation

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LX2205

1A Li-Ion Battery Charger with Power Source Management

Microsemi Corporation 

LX2205

® 1A Li-Ion Battery Charger with Power Source Management

TM

PRODUCTION DATA SHEET

Name Pin

MDC 5

SHDN 6

SUSP 7

SYS

3

TFB 16

USB

4

UCL

8

FUNCTIONAL PIN DESCRIPTION (CONTINUED)

Description

Main DC Input – This input is a voltage monitoring input (and not a high current input). Its purpose is to

determine the presence of the main DC input to provide lockout for the USB power input.

Shutdown – Pulling this pin high will disable the entire device including the battery discharge path and place

the device in a low power sleep mode. This pin has an internal pull-down.

Suspend (USB) – Pulling this pin high will prevent current from being drawn from the USB input pin. The rest

of the chip functions are unaffected. This pin has an internal pull-down.

System Power Node – This pin provides power to user system. SYS voltage provided will range from the

battery voltage to the wall adapter and/or USB voltage.

Temperature Feedback – Charging is suspended when the TFB pin falls below 29% (typ) of VSYS or rises

above 74% (typ) of VSYS. CHG and DONE pins remain in their prior state during a TFB event. Connecting the

TFB pin to GND disables the TFB function.

USB Power Input – USB compliant input.

USB Current Limit – A high logic level will select the high USB current level determined by the programming of

the CUS pin. A low logic level will select a level that is 20% of the high USB current level. This pin has an

internal pull-down.

Copyright © 2007

Rev. 1.0a, 2007-03-02

Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

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