RT9515 查看數據表（PDF） - Richtek Technology

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RT9515

Linear Single Cell Li-Ion Battery Charger IC

Richtek Technology 

RT9515

Typical Application Circuit

AC

Adapter

RT9515

1 ACIN

10

BATT

1uF

Battery Pack

To System

To System

3 CHG_S

4 PGOOD

5, Exposed Pad (11)

GND

9

TS

8

EN

ISETA 6

Chip Shutdown

Chip Enable

RSET

0.1uF to 10uF

Pre-Charge Phase

Fast Charge

Phase

Constant Voltage

Phase &

Re-Charge Phase

Standby Phase

Programmed

Charge Current

Battery

Voltage

4.1V Recharge

Threshold

Charging

Current

1/10 Programmed

Charge Current

2.8V Precharge

Threshold

Charge

Complete

Functional Pin Description

Pin No.

1

2, 7

3

4

5

Pin Name

ACIN

NC

CHG_S

PGOOD

GND

Pin Function

Wall Adaptor Charge Input Supply.

No Internal Connection.

Charge Status Indicator Output (open drain).

Power Good Indicator Output (open drain).

Ground.

6

ISETA

Wall Adaptor Supply Charge Current Set Point.

8

EN

9

TS

10

BATT

11 (Exposed Pad) GND

Charge Enable Input (active low).

Temperature Sense Input.

Battery Charge Current Output.

Exposed pad should be soldered to PCB board and connected to GND.

www.richtek.com

2

DS9515-01 April 2011

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