RT9502 RICHTEK [Richtek Technology Corporation], RT9502 Datasheet - Page 3

• Manufacturer Part Number: RT9502
• Description: Linear Single Cell Li-Ion Battery Charger IC with Dual Input Supply
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Function Block Diagram
DS9502-02 April 2011
ISETA
GND
1.5k
1uA
MOSFET
SENSE
7.5k
ISETU
P-MOSFET
Precharge
0.25V
0.9V
USB
EN
Termination
Comparator
0.25V
0.5V
2.5V
USB
-
+
-
+
1uA
Charge
Disable
Thermal
Sense
115 C
V
REF
Charge Input
Selection
ACIN/USB
MOSFET
SENSE
Temperature Fault
Temperature
Sense
TS
Loop Controller
DRV
V
P-MOSFET
REF
ACIN
Thermal
Sense
ACIN
V
FB
2.5V
VCC/USB
Logic
+
-
Comparator
OVP
OVP
RT9502
www.richtek.com
BATT
PGOOD
CHG_S
3