RT9519A Просмотр технического описания (PDF) - Richtek Technology

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производитель

RT9519A

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

Richtek Technology 

RT9519A

Typical Application Circuit

Adapter

CIN

2.2µF

RT9519A

1 VIN

VP 12

External Power Source

2.95V to 3.6V

To System Load

17, 18, 19 SYS

TS 6

Power Good Indicator

Charge Indicator

Chip Enable

Suspend

Normal

Suspend Mode

See ISETU

4.2V

4.05V

1.5A

VIN Current Limit 500mA

100mA

VIN Current Limit

2 PGOOD

3 CHG

10 EN

20 USUS

15 VSET

14 ISETL

13 ISETU

TIMER 7

BAT 8, 9

CTIMER

1µF

NTC

1µF + 1-Cell

Li+

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

Logic Control

Timer

Temperature

Sense

1sec

Delay

OVP

UVLO

SYS

BAT

VP

TIMER

TS

CHG

PGOOD

GND

www.richtek.com

2

DS9519A-02 April 2011

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