RT9519A RICHTEK [Richtek Technology Corporation], RT9519A Datasheet - Page 2

• Manufacturer Part Number: RT9519A
• Description: Linear Single Cell Li-lon Battery Charger with Auto Power Path Management
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9519A
Typical Application Circuit
Function Block Diagram
www.richtek.com
2
Power Good Indicator
Charge Indicator
VIN Current Limit
See ISETU
To System Load
Normal
Suspend Mode
Chip Enable
Suspend
Adapter
ISETU
ISETA
ISETL
USUS
1.5A
VSET
ISET
VIN
EN
VIN Current Limit
500mA
4.05V
100mA
200k
200k
200k
200k
200k
200k
C
2.2µF
4.2V
IN
Current
Setting
Sleep
Mode
Control
Circuit
17, 18, 19
10
20
15
14
13 ISETU
Logic Control
1
2
3
VIN
SYS
PGOOD
CHG
EN
USUS
VSET
ISETL
CC/CV/TR
Multi Loop
Controller
RT9519A
/APPM
TIMER
ISETA
ISET
GND
BAT
VP
TS
UVLO
Temperature
Delay
Timer
1sec
OVP
12
6
7
8, 9
5
4, 21 (Exposed Pad)
11
Sense
Thermal
Circuit
R
C
1µF
TIMER
R
I
CHG
ISETA
1µF
I
CHG
VP
SYS
BAT
TIMER
TS
CHG
PGOOD
GND
+
/2
External Power Source
NTC
1-Cell
Li+
2.95V to 3.6V
DS9519A-02 April 2011