RT9503 데이터 시트보기 (PDF) - Richtek Technology

부품명

상세내역

제조사

RT9503

Fully Integrated Linear Single Cell Li-Ion Battery Charger with Power Path

Richtek Technology 

RT9503

Typical Application Circuit

VIN

Adapter

1uF

USB

1uF

System

10uF

RT9503

15 SYS

BAT_ON 13

16 AC_ON

Battery Pack

3 CHG_S

4 AC_PGOOD

1 ACIN

BATT 12

TS 11

TIMER 10

1uF

CT

0.1uF

2 USB

6 ISETA

7 ISETU

EN 9

Chip Enable

GND 5, Exposed Pad (17)

Functional Pin Description

Pin No.

Pin Name

Pin Function

1

ACIN

Wall Adaptor Charge Input Supply.

2

USB

USB Charge Input Supply.

3

CHG_S

Charge Status Indicator Output (open drain).

4

AC_PGOOD Wall Adaptor Power Good Indicator Output (open drain).

5

GND

Ground.

6

ISETA

Wall Adaptor Supply Charge Current Set Point.

7

ISETU

USB Supply Charge Current Set Input (active low).

8, 14

9

10

NC

EN

TIMER

No Internal Connection.

Charge Enable (Active Low).

Safe Charge Timer Setting.

11

TS

Temperature Sense Input.

12

BATT

Battery Charge Current Output.

13

BAT_ON

Power path controller output, low to turn on the external P-MOSFET.

15

SYS

System Voltage Detecting Pin.

16

AC_ON

P-MOSFET Switch Control Output (open drain).

17 (Exposed Pad) GND

The exposed pad must be soldered to a large PCB and connected to GND for

maximum power dissipation.

www.richtek.com

2

DS9503-03 April 2011

Share Link: