Charger IC. RP1553 Datasheet

RP1553 IC. Datasheet pdf. Equivalent

RP1553 Datasheet
Recommendation RP1553 Datasheet
Part RP1553
Description Linear Single Cell Li-Ion Battery Charger IC
Feature RP1553; RP1553 Linear Single Cell Li-Ion Battery Charger IC General Description The RP1553 is a fully inte.
Manufacture RICHPOWER
Datasheet
Download RP1553 Datasheet




RICHPOWER RP1553
RP1553
Linear Single Cell Li-Ion Battery Charger IC
General Description
The RP1553 is a fully integrated low cost single-cell Li-
Ion battery charger IC ideal for portable applications. The
RP1553 is capable of being powered up from AC adapter.
The RP1553 enters sleep mode when AC adapter is
removed.
The RP1553 optimizes the charging task by using a control
algorithm including preconditioning mode, fast charge
mode and constant voltage mode. The charging task is
terminated as the charge current drops below the preset
threshold. The AC adapter charge current can be
programmed up to 1A with an external resister. The internal
thermal feedback circuitry regulates the die temperature
to optimize the charge rate for all ambient temperatures.
The RP1553 features 18V maximum rating voltages for
AC adapter. The other features are under voltage
protection, over voltage protection for AC adapter supply
and battery temperature monitoring.
Features
18V Maximum Rating for AC Adapter
Internal Integrate P-MOSFETs
AC Adapter Power Good Status Indicator
Charge Status Indicator
Under Voltage Protection
Over Voltage Protection
Automatic Recharge Feature
Battery Temperature Monitoring
Small 10-Lead WDFN Package
Thermal Feedback Optimizing Charge Rate
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Digital Cameras
Cellular Phones
Personal Data Assistants (PDAs)
MP3 Players
Hand Held PCs
Ordering Information
RP1553
Package Type
QW : WDFN-10L 3x3 (W-Type)
Operating Temperature Range
G : Green (Halogen Free with Commer-
cial Standard)
Note :
Richpower Green products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Pin Configurations
(TOP VIEW)
ACIN 1
NC 2
CHG_S 3
PGOOD 4
GND 5
GND
11
10 BATT
9 TS
8 EN
7 NC
ISETA
WDFN-10L 3x3
Marking Information
For marking information, contact our sales representative
directly or through a Richpower distributor located in your
area, otherwise visit our website for detail.
RP1553-00 Oct 2010
1



RICHPOWER RP1553
RP1553
Typical Application Circuit
AC
Adapter
RP1553
1
ACIN
10
BATT
1µF
Battery Pack
To System
To System
3 CHG_S
4 PGOOD
5, Exposed Pad (11) GND
9
TS
8
EN
ISETA 6
Chip Shutdown
Chip Enable
RSET
0.1µF to 10µF
Pre-Charge Phase
Fast Charge
Phase
Programmed
Charge Current
Constant Voltage
Phase &
Re-Charge Phase
Standby Phase
4.1V Recharge
Threshold
Battery
Voltage
Charging
Current
1/10 Programmed
Charge Current
2.8V Precharge
Threshold
Charge
Complete
Functional Pin Description
Pin No.
Pin Name
Pin Function
1
ACIN
Wall Adaptor Charge Input Supply.
2, 7 NC
No Internal Connection.
3
CHG _S
Charge Status Indicator Output (open drain).
4
PGO OD
Power Good Indicator Output (open drain).
5 GND Ground.
6
ISETA
Wall Adaptor Supply Charge Current Set Point.
8 EN
Charge Enable Input (active low).
9 TS
Temperature Sense Input.
10 BATT Battery Charge Current Output.
11 (Exposed Pad) GND
Exposed pad should be soldered to PCB board and connected to GND.
2 RP1553-00 Oct 2010



RICHPOWER RP1553
Function Block Diagram
GND
Charge Input Control
RP1553
ACIN
OVP
Comparator
2.5V +
-
OVP
SENSE
FET
ACIN
PFET
ISETA
2.5V
0.5V
0.25V
VREF
Thermal
Sense
115 C
2.5V
+
-
V/I
V/I
Current
Amplifier
0.25V
2.5V
Precharge
Tcrmination
Comparator
-
0.25V +
0.9V -
Charge
Disable
+
Voltage
+ Amplifier
-
Charge Done
Temperature Fault
Temperature
1uA Sense
BATT
Precharge
Comparator
+
2.5V -
Precharge
Recharge
Comparator
+
2.5V -
Recharge
VCC
Logic
PGOOD
CHG_S
EN TS
RP1553-00 Oct 2010
3







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