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RT9719 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part No. RT9719
Description  Charging System Safety Device
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Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
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RT9719 Datasheet(HTML) 2 Page - Richtek Technology Corporation

 
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RT9719
2
DS9719-01 April 2011
www.richtek.com
Function Block Diagram
Typical Application Circuit
RT9719
ACIN
GND
CHRIN
ISENSE
GATEDRV
VACIN
CIN
COUT
1µF
1µF
0.2
SOC
CHRIN
GATEDRV
ISENSE
VBAT
1µF
Battery
Functional Pin Description
Pin No.
SOT-23-6
WDFN-8L 2x2
Pin Name
Pin Function
1
--
NC
No Internal Connection.
2
4
GND
Analog Ground.
3
1, 2, 3
ACIN
The Input Power Source. The VIN can withstand up to 30V input.
4
7, 8
ISENSE
Connect to ISENSE resistor and ISENSE pin of charging controller.
5
6
CHRIN
Voltage is equal to VIN as VIN in power good range and providing ~25mA
for system at most.
6
5
GATEDRV External control pin for controlling the P-MOSFET by charging controller.
--
9
(Exposed pad)
GND
Ground Pin. The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
Control
Logic
MUX
SW
SW
INOVP
UVLO
OTP
ACIN
ISENSE
CHRIN
GND
GATEDRV


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