PS200

DS21891B-page 2

© 2005 Microchip Technology Inc.

Pinout Description

Pin

Pin Name

Pin Type Input Type Output Type

Description

Supply

Power

—

Supply voltage

2

LED2

O

—

CMOS

Status indicator

I

Analog

—

Battery voltage input

4

RESET

IST

—

Reset

O

—

CMOS

PWM output for setting current level

6

O

—

CMOS

PWM output to a buck converter for charge control

7

LOOPFBK

I

Analog

—

Current feedback loop

I

Analog

—

Current feedback loop input

I

Analog

—

Current level control

10

LED1

O

—

CMOS

Status indicator

11

O

—

HVOD

High-voltage, open-drain output pin (optional)

12

I

Analog

—

Current feedback input pin B used for current scaling

13

I

Analog

—

Current feedback input pin A used for current scaling

14

O

—

Analog

Current feedback output

15

BATID

I

Analog

—

Battery ID select

16

CHGFBK

I

Analog

—

Charge control feedback

17

SHDN

O

—

Analog

Shutdown signal, active-low

18

I

Analog

—

Overvoltage protection

19

TEMP

I

Analog

—

Battery temperature input

20

Supply

Power

—

Supply ground

Legend: I = Input, O = Output, ST = Schmitt Trigger Input Buffer, HVOD = High-Voltage Open-Drain