RT9511 RICHTEK [Richtek Technology Corporation], RT9511 Datasheet - Page 3

• Manufacturer Part Number: RT9511
• Description: Fully Integrated Battery Charger with Two Step-Down Converters
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Functional Pin Description
DS9511-01 April 2011
17 (Exposed Pad)
Pin No.
1, 5, 7,
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
2
3
4
6
8
9
GND
EN1
VDD1
LX1
FB2
EN2
VDD2
LX2
ISETA
ISETU
NC
EN
TIMER
TS
BATT
BAT_ON
SYS
USB
AC_ON
ACIN
CHG_S
FB1
Pin Name
The exposed pad must be soldered to a large PCB and connected to GND for
maximum power dissipation.
Chip Enable Input Pin of Buck Converter 1. (Active High)
Power Input Pin of Buck Converter 1.
Switching Output Pin of Buck Converter 1.
Feedback Voltage Input Pin of Buck Converter 2.
Chip Enable Input Pin of Buck Converter 2. (Active High)
Power Input Pin of Buck Converter 2.
Switching Output Pin of Buck Converter 2.
Adaptor Supply Charge Current Set Point.
USB Supply Charge Current Set Input.
No Internal Connection.
Charge Enable Input Pin of Charger. (Active Low)
Safe Charge Timer Setting.
Temperature Sense Input.
Battery Charge Current Output.
Power path controller output. This pin is used to turn on an external
P-MOSFET.
System Voltage Detector Input Pin.
USB Supply Voltage Input Pin.
P-MOSFET Switch Control Output (open drain).
Adaptor Supply Voltage Input Pin.
Charge Status Indicator Output. (Open Drain)
Feedback Voltage Input Pin of Buck Converter 1.
Pin Function
RT9511
www.richtek.com
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