RT9516 查看數據表（PDF） - Richtek Technology

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产品描述 (功能)

比赛名单

RT9516

Linear Single Cell Li-lon Battery Charger with Single Input Supply for Portable Applications

Richtek Technology 

Flow Chart

Standby State

P-MOSFET = OFF

YES

NO VIN < OVP &

EN = H

RT9516

VIN - VBATT > VOS YES

BATT > 2.5V

YES

Soft-Start

NO

Sleep State

P-MOSFET = OFF

NO

Pre_Charge

ICHG_pre = (1/10) x

ICHG_F

Fast-Charge

ICHG_F = 570mA

RSET = 2.8k

Power Off State

P-MOSFET = OFF

CV State

VBATT = 4.2V

ICHG = 0A

YES

VBATT ≥ 4.2V

NO

Any State or

VIN > OVP or

EN = H

Functional Pin Description

Pin No.

Pin Name

Pin Function

1

VIN

2,

GND

9 (Exposed Pad)

3

ISET

4

ABI

Input Power Source. The VIN can withstand up to 28V input.

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

to GND for maximum power dissipation.

Charge Current Set Point.

Auto-Booting External Input. ABI is pulled to GND through an internal 200kΩ

resistor.

5

ABO

Auto-Booting Logic Output.

6

EN

Charge Enable (Active Low). With internal 200kΩ pull low resistor.

7

PGOOD PGOOD pin connect to VIN with 10Ω N-MOSFET as power good condition.

8

BATT

Battery Charge Current Output.

DS9516-01 April 2011

www.richtek.com

3

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