RT9519BGQW データシートの表示（PDF） - Richtek Technology

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RT9519BGQW

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

Richtek Technology 

RT9519B

Functional Pin Description

Pin No.

Pin Name

Pin Function

1

VIN

Supply Voltage Input.

2

PGOOD

3

CHG

4,

21 (Exposed Pad)

GN D

5

ISETA

6

TS

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 detects whether the battery (with NTC) is present or not.

7

TIMER Safe Charge Timer Setting.

8,9

BAT

Battery Charge Current Output.

10

11

12

13

14

15

16

17, 18, 19

EN

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

ISET

VP

ISETU

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

200kΩ pull low.

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

po wer.

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

200kΩ pull low.

ISETL

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

VSET

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

200kΩ pull low.

TS Fault Status Output. Open-drain Output. If TS is of fault (too cold, too hot) or

TS_FAULT

VP triggers UVLO, TS_FAULT = L. If TS and VP are normal, TS_FAULT = H.

SYS

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

capacitor to GND.

20

USUS

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

DS9519B-01 April 2011

www.richtek.com

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