RT9519BGQW 查看數據表（PDF） - Richtek Technology

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RT9519BGQW

Linear Single Cell Li-lon Battery Charger with Auto Power Path Management

Richtek Technology 

RT9519B

Typical Application Circuit

Adapter

To System Load

Power Good Indicator

Charge Indicator

TS_FAULT Indicator

Chip Enable

CSYS

CIN

2.2µF

RT9519B

1 VIN

VP 12

17, 18, 19 SYS

TS 6

R4 R3 R2

TIMER 7

2 PGOOD

3 CHG

16 TS_FAULT BAT 8, 9

10 EN

External Power Source

2.95V to 3.6V

CVP

R1

CTIMER

1µF

NTC

CBAT +

1µF

1-Cell

Li+

Suspend

Normal

Suspend Mode

1.5A

See ISETU

VIN Current Limit

4.2V

4.05V

500mA

100mA

VIN Current Limit

20 USUS

15

VSET

14 ISETL

13 ISETU

ISETA 5

RISETA

ISET 11

ICHG

ICHG/2

GND 4, 21 (Exposed Pad)

Function Block Diagram

VIN

ISETA

ISET

VSET

ISETL

USUS

EN

ISETU

Control

Circuit

Sleep

Mode

Current

Setting

CC/CV/TR

/APPM

Multi Loop

Controller

Thermal

Circuit

R

200k

200k

200k

200k

200k

200k

Timer

Temperature

Sense

Logic Control

OVP

UVLO

1sec

Delay

SYS

BAT

VP

TIMER

TS

CHG

TS_FAULT

PGOOD

GND

www.richtek.com

2

DS9519B-01 April 2011

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