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RT9503A Просмотр технического описания (PDF) - Richtek Technology

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RT9503A Datasheet PDF : 15 Pages
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Function Block Diagram
USB
SENSE
MOSFET
USB
P-MOSFET
RT9503A
ACIN
Charge Input
Selection
2.5V
OVP
Comparator
+
OVP
-
SENSE
MOSFET
ACIN
P-MOSFET
Timer
TIMER
ISETA
GND
Precharge
1.5k 7.5k
1µA
ACIN/USB
Temperature
VFB
Sense
DRV
Controller
OVP
Logic
VCC/USB
BATT
VOS
1µA
VH
+
- Hys
Logic
BATT
TS
AC_ON
AC_PGOOD
CHG_S
BAT_ON
ISETU
EN
SYS
Pre-Charge Phase
Fast Charge
Phase
Constant Voltage
Phase &
Re-Charge Phase
Standby Phase
Programmed
Charge Current
Battery
Voltage
4.1V Recharge
Threshold
Charging
Current
DS9503A-01 April 2011
1/10 Programmed
Charge Current
2.8V Precharge
Threshold
Charge
Complete
Charging I-V Curve
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