®
RT9536
Linear Single Cell Li-Ion Battery Charger IC for Portable
Applications
General Description
The RT9536 is a fully integrated single cell Li-ion battery
charger IC ideal for portable applications. The RT9536
optimizes the charging task by using a control algorithm
including pre-charge mode, fast charge mode and constant
voltage mode. The input voltage range of the VIN pin can
be as high as 28V. When the input voltage exceeds
the OVP threshold, it will turn off the charging MOSFET
to avoid overheating of the chip.
In RT9536, the maximum charging current can be
programmed with an external resistor. For USB application,
the user can set the current to 100mA/500mA through
the EN/SET pin. For the factory mode, the RT9536 can
allow 4.2V or 4.35V/2.3A power pass through to support
system operation. It also provides a 50mA LDO to support
the power of peripheral circuit. The internal thermal
feedback circuit regulates the die temperature to optimize
the charge rate for all ambient temperatures. The RT9536
provides protection functions such as under voltage
protection, over voltage protection for VIN supply and
thermal protection for battery temperature.
The RT9536 is available in a WDFN-10L 3x2 package to
achieve optimized solution for PCB space and thermal
considerations.
Features
28V Maximum Rating for DC Adapter
Internal Integrated Power MOSFETs
Support 4.2V or 4.35V/2.3A Factory Mode
50mA Low Dropout Voltage Regulator
Status Pin Indicator
Programmed Charging Current
Under Voltage Lockout
Over Voltage Protection
Thermal Feedback Optimized Charge Rate
RoHS Compliant and Halogen Free
Applications
Cellular Phones
Digital Cameras
PDAs and Smart Phones
Portable Instruments
Marking Information
03 : Product Code
03 YM
DNN
YMDNN : Date Code
Simplified Application Circuit
RT9536
BATT
C
OUT
PGB
ISET
R
ISET
R
IEOC
IEOC
+
Adapter or USB
C
IN
BATT
VIN
CHGSB
LDO
EN/SET
GND
BATT
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9536-01 August 2015
www.richtek.com
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RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
