RT9524 RICHTEK [Richtek Technology Corporation], RT9524 Datasheet - Page 2

• Manufacturer Part Number: RT9524
• Description: Linear Single Cell Li-Ion Battery Charger IC for Portable Applications
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9524
Typical Application Circuit
Function Block Diagram
www.richtek.com
2
Functional Pin Description
11 (Exposed Pad)
Pin No.
3, 7,
10
1
2
4
5
6
8
9
IEOC
VIN
ISET
GND
LDO
IEOC
EN/SET
CHGSB
PGB
BATT
Pin Name
VIN
Adapter or USB
BATT
Base
The Input Power Source.
Charging Current Setting.
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
LDO Output (4.9V). This pin provides 50mA output current.
End-of-Charge Current Setting. The I
programmed by the ISET pin.
Enable and Operation Mode Setting.
Indicator Output for Charging Status.
Indicator Output for Power Status.
Battery Charge Current Output.
R
ISET
I
EOC
UVLO
Sleep
Mode
Block
OVP
Set
R
IEOC
V
V
I
C
Bias
REF
DD
IN
1
9
2
5
Switch
CC/CV/TR
Multi Loop
VIN
PGB
ISET
IEOC
Controller
Well
Logic
RT9524
EN/SET 6
CHGSB
BATT
GND
LDO 4
Status
Set Block
Set Block
Current
Current
10
8
3, 7, 11(Exposed Pad)
LDO
Pin Function
EOC
C
OUT
is from 5% to 5O% Ichg-fast which is
200k
+
BATT
BATT
CHGSB
PGB
GND
ISET
EN/SET
LDO
DS9524-01 April 2011