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RT9505 Fiches technique(PDF) 2 Page - Richtek Technology Corporation

No de pièce RT9505
Description  Linear Single Cell Li-Ion Battery Charger IC
PDF  11 Pages
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Fabricant  RICHTEK [Richtek Technology Corporation]
Site Internet  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9505 Fiches technique(HTML) 2 Page - Richtek Technology Corporation

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RT9505
2
DS9505-02 April 2011
www.richtek.com
Functional Pin Description
Pin No.
Pin Name
Pin Function
1
ACIN
Wall Adaptor Charge Input Supply.
2, 7
NC
No Internal Connection.
3
CHG_S
Charge Status Indicator Output (open drain).
4
PGOOD
Power Good Indicator Output (open drain).
5
GND
Ground.
6
ISETA
Wall Adaptor Supply Charge Current Set Point.
8
EN
Charge Enable Input (active low).
9
TS
Temperature Sense Input.
10
BATT
Battery Charge Current Output.
11 (Exposed Pad) GND
Exposed pad should be soldered to PCB board and connected to GND.
Typical Application Circuit
RT9505
1uF
AC
Adapter
ACIN
GND
BATT
TS
ISETA
RSET
Battery Pack
1
3
4
5, Exposed Pad (11)
6
8
9
10
CHG_S
PGOOD
EN
To System
To System
Chip Shutdown
Chip Enable
0.1uF to 10uF
Pre-Charge Phase
Fast Charge
Phase
Constant Voltage
Phase &
Standby Phase
Re-Charge Phase
Programmed
Charge Current
4.1V Recharge
Threshold
2.8V Precharge
Threshold
1/10 Programmed
Charge Current
Charge
Complete
Battery
Voltage
Charging
Current



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