RT9514GQW Просмотр технического описания (PDF) - Richtek Technology
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RT9514GQW Datasheet PDF : 10 Pages
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RT9514
Functional Pin Description
Pin No.
Pin Name
Pin Function
1
ACIN
Wall Adaptor Charge Input Supply.
2, 7, 9
3
NC
CHG_S
No Internal Connection.
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
10
BATT
11 (Exposed Pad) GND
Charge Enable Input (active low).
Battery Charge Current Output.
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
Function Block Diagram
ACIN
GND
Charge Input
Selection
SENSE
FET
ACIN
PFET
OVP
Comparator
2.5V +
-
OVP
ISETA
2.5V
0.5V
0.25V
VREF
Loop Controller
Precharge
Comparator
+
2.5V -
Precharge
Recharge
Comparator
+
2.5V -
Recharge
VCC
Tcrmination
Comparator
-
VREF
0.25V +
0.9V -
Charge
Disable
+
1uA
125 C
Charge Done
Logic
BATT
PGOOD
CHG_S
EN
www.richtek.com
2
DS9514-01 April 2011
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