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RT9503A Просмотр технического описания (PDF) - Richtek Technology

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RT9503A Fully Integrated Linear Single Cell Li-Ion Battery Charger with Power Path Richtek
Richtek Technology Richtek
RT9503A Datasheet PDF : 15 Pages
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RT9503A
Marking Information
HK=YM
DNN
HK= : Product Code
YMDNN : Date Code
Typical Application Circuit
VIN
Adapter
USB
System
10µF
RT9503A
15 SYS
BAT_ON 13
16 AC_ON
Battery Pack
3 CHG_S
BATT 12
1µF
4 AC_PGOOD
1 ACIN
TS 11
CTMR
1µF
TIMER 10
0.1µF
2 USB
1µF RSETA 6 ISETA
7 ISETU
EN 9
Chip Enable
GND 5, Exposed Pad (17)
Functional Pin Description
Pin No.
Pin Name
Pin Function
1
ACIN
Wall Adaptor Charge Supply Input.
2
USB
USB Charge Supply Input.
3
CHG_S
Charge Status Indicator Output (open drain).
4
5,
17 (Exposed Pad)
6
7
8, 14
AC_PGOOD Wall Adaptor Power Good Indicator Output (open drain).
GND
Ground. The exposed pad must be soldered to a large PCB and connected
to GND for maximum power dissipation.
ISETA
Wall Adaptor Supply Charge Current Set Point.
ISETU
USB Supply Charge Current Set Input (active low).
NC
No Internal Connection.
9
EN
Charge Enable (Active Low).
10
TIMER
Safe Charge Timer Setting.
11
TS
Temperature Sense Input.
12
BATT
Battery Charge Current Output.
13
BAT_ON
Power Path Controller Output. Pull low to turn on the external P-MOSFET.
15
SYS
System Voltage Detecting Input.
16
AC_ON
P-MOSFET Switch Control Output (open drain).
www.richtek.com
2
DS9503A-01 April 2011
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