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RT9503 Datasheet(PDF) 3 Page - Richtek Technology Corporation

No. de pieza RT9503
Descripción Electrónicos  Fully Integrated Linear Single Cell Li-Ion Battery Charger with Power Path
PDF  15 Pages
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Fabricante Electrónico  RICHTEK [Richtek Technology Corporation]
Página de inicio  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9503 Datasheet(HTML) 3 Page - Richtek Technology Corporation

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RT9503
3
DS9503-03 April 2011
www.richtek.com
Function Block Diagram
Charge Input
Selection
ACIN/USB
ACIN
USB
ISETA
BATT
ACIN
P-MOSFET
SENSE
MOSFET
USB
P-MOSFET
SENSE
MOSFET
Thermal
Sense
VREF
2.5V
0.25V
0.5V
GND
Precharge
Loop Controller
+
-
0.25V
Logic
Temperature
Sense
Temperature Fault
+
-
Charge
Disable
0.9V
1uA
TS
Termination
Comparator
VCC/USB
EN
ISETU
1uA
7.5k
1.5k
VREF Thermal
Sense
VFB
DRV
OVP
+
-
2.5V
OVP
Comparator
-
+
BATT
SYS
VOS
VH
Hys
Logic
OVP
AC_ON
BAT_ON
CHG_S
PGOOD
125 C
Timer
TIMER
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
Charging I-V Curve



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