RT9519AGQW Просмотр технического описания (PDF) - Richtek Technology

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Компоненты Описание

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RT9519AGQW

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

Richtek Technology 

RT9519A

Functional Pin Description

Pin No.

Pin Name

Pin Function

1

VIN

2

PGOOD

3

CHG

4,

21 (Exposed Pad)

GND

5

ISETA

6

TS

Supply Voltage Input.

Power Good Status Output. Open-drain output.

Charger Status Output. Open-drain output.

Ground. The exposed pad must be soldered to a large PCB and connected to

GND for maximum power dissipation.

Charge Current Set Input. Connect a resistor (RISETA) between ISETA and GND.

Temperature Sense Input. The TS pin connects to a battery’s thermistor to

determine if the battery is too hot or too cold to charge. If the battery’s

temperature is out of range, charging is paused until it re-enters the valid range.

TS also detect battery (with NTC) is present or not.

7

TIMER Safe Charge Timer Setting.

8,9

BAT

Battery Charge Current Output.

10

EN

Charge Enable. Active Low input. 200kΩ pull low.

11

ISET

Half Charge Current Set Input. Control by external GPIO, L = ICHG1 / 2, H = ICHG1,

200kΩ pull low.

12

VP

This pin must be provided a regulated voltage from 2.95V to 3.6V by external

power.

13

14

15

16

17, 18, 19

20

ISETU

ISETL

VSET

NC

SYS

USUS

VIN Current Limit Control Input. When ISETL = H, L = 100mA, H = 500mA,

200kΩ pull low.

VIN Current Limit Control Input. H : see ISETU, L = 1.5A, 200kΩ pull low.

Battery Regulation Set Input. Control by external GPIO. L = 4.05V, H = 4.2V,

200kΩ pull low.

No Internal Connection.

System Connect Pin. Connect this pin to System with a minimum 10μF ceramic

capacitor to GND.

VIN Suspend Control Input. H = Suspend, L = No suspend. 200kΩ pull low.

DS9519A-02 April 2011

www.richtek.com

3

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