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RT9501A

Description
Advanced Lithium-Ion Linear Battery Charger
CategoryPower/power management    SingleCellLi-Ion   
File Size207KB,9 Pages
ManufacturerRichtek Technology Corporation
Websitehttps://www.richtek.com/
Download Datasheet Parametric Compare View All

RT9501A Overview

Advanced Lithium-Ion Linear Battery Charger

RT9501A Parametric

Parameter NameAttribute value
StatusActive
Vin (min)(V)4.5
Vin (max)(V)7
Battery Charge Voltage (max)(V)4.1
Battery Charge Current (max)(A)
Input SourceAC Adapter
Features
Package TypeMSOP-8
Datasheethttps://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS9501AB-09.pdf
Preliminary
RT9501A/B
Advanced Lithium-Ion Linear Battery Charger
General Description
The RT9501 is a single Lithium-Ion or Lithium-Polymer
cell linear battery charger which is designed for compact
and cost-sensitive handheld devices. It combines charge
status indication, charge termination, battery temperature
monitoring, and high accuracy current and voltage
regulation in a MSOP-8 package.
The RT9501 charges the battery in three modes,
precharge, constant current, constant voltage. If the
battery voltage is below the precharge threshold V
O(MIN)
,
the RT9501 precharges the battery with a lower
conditioning current. After precharge, the RT9501 applies
a constant current to the battery. An external sense-
resister sets the charge current. The constant voltage
mode continues until the battery reaches the regulation
voltage.
The battery temperature is continuously measured by an
external thermistor through the TS pin. The RT9501
inhibits charge until the temperature is within the range
defined by users.
Features
For Single Lithium-Ion or Lithium-Polymer Cell
Battery Pack (4.1V or 4.2V)
A Few External Components are Required
Precharge, Constant Current, Constant Voltage
Modes
Battery Temperature Monitor
Charge Status Indication
Automatic Battery Recharge
Charge Termination Detect
Auto Low Power Sleep Mode when VDD Power is
Removed
MSOP-8 Package
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Digital Cameras
PDAs
Cellular Phones
Information Appliance
Ordering Information
RT9501
Package Type
F : MSOP-8
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Voltage Version
A : 4.1V
B : 4.2V
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
Pin Configurations
(TOP VIEW)
VDD
TS
STAT
GND
1
2
3
4
8
7
6
5
Note :
RichTek Pb-free and 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.
100%matte tin (Sn) plating.
BATT
CS
FB/CE
CC
MSOP-8
DS9501A/B-07 March 2007
www.richtek.com
1

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