RT9505 반도체 회로 부품 판매점
Fully Integrated Linear Single Cell Li-Ion Battery Charger
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 Richtek Technology |
Conceptual
RT9505
Fully Integrated Linear Single Cell Li-Ion Battery Charger
for Portable Applications
General Description
The RT9505 is a fully integrated low cost single-cell Li-
Ion battery charger ideal for portable applications. The
RT9505 is capable of being powered up from AC adapter
inputs. The RT9505 enters sleep mode when supplies is
removed.
The RT9505 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 RT9505 features 18V and 7V maximum rating voltages
for AC adapter. The other features are under voltage
protection, over voltage protection for AC adapter supply,
battery temperature monitoring, power supply status
indicators and charge status indicator.
Features
z Automatic Input Supplies Selection
z 18V Maximum Rating for AC Adapter
z Internal Integrated Power FETs
z AC Adapter Power Good Status Indicator
z Charge Status Indicator
z Under Voltage Protection
z Over Voltage Protection
z Automatic Recharge Feature
z Battery Temperature Monitoring
z Small 10-Lead WDFN Package
z Thermal Feedback Optimizing Charge Rate
Applications
z Digital Cameras
z Cellular Phones
z Personal Data Assistants (PDAs)
z MP3 Players
z Hand Held PCs
Ordering Information
RT9505
Package Type
QW : WDFN-10L 3x3 (W-Type)
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
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.
Pin Configurations
(TOP VIEW)
ACIN 1
NC 2
CHG_S 3
PGOOD 4
GND 5
GND
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 RichTek distributor located in your
area, otherwise visit our website for detail.
DS9505-00C February 2007
www.richtek.com
1
RT9505
Conceptual
Typical Application Circuit
AC
Adapter
To System
To System
RT9505
1 ACIN
10
BATT
1uF
Battery Pack
3 CHG_S
4 PGOOD
5
GND
9
TS
8
EN
ISETA 6
Chip Shutdown
Chip Enable
RSET
Precharge Fast Charge
Phase
Phase
Programmed Charge
Current
Constant
Voltage
Phase &
Standby
Phase
Recharge
Phase
Battery
Voltage
4.1V
Recharge
Threshold
Charging
Current
1/10
Programmed
Charge
Current
2.8V
Precharge
Threshold
Charge
Complete
Functional Pin Description
Pin Number Pin Name
Pin Function
1 ACIN
Wall Adaptor Charge Input Supply
2, 7 NC
No Internal Connect
3
CHG_S
Charge Status Indicator Output (open drain)
4
PGOOD
Power Good Indicator Output (open drain)
5 GND
Ground
6 ISETA Wall Adaptor Supply Charge Current Set Point
8 EN
9 TS
Charge Enable Input (active low)
Temperature Sense Input
10 BATT
Battery Charge Current Output.
Exposed Pad GND
Exposed pad should be soldered to PCB board and connected to GND
www.richtek.com
2
DS9505-00C February 2007
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PDF 파일 내의 페이지 : 총 9 페이지
제조업체: Richtek Technology
( richtek )
RT9505 battery
데이터시트 다운로드 :
[ RT9505.PDF ]
[ RT9505 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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