參數(shù)資料
型號: ISL6294IRZ-T
廠商: INTERSIL CORP
元件分類: 電源管理
英文描述: High Input Voltage Charger
中文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: 2 X 3 MM, ROHS COMPLIANT, PLASTIC, DFN-8
文件頁數(shù): 1/8頁
文件大小: 222K
代理商: ISL6294IRZ-T
1
FN9174.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL6294
High Input Voltage Charger
The ISL6294 is a cost-effective, fully integrated high input
voltage single-cell Li-ion battery charger. The charger uses a
CC/CV charge profile required by Li-ion batteries. The
charger accepts an input voltage up to 28V but is disabled
when the input voltage exceeds the OVP threshold, typically
6.8V, to prevent excessive power dissipation. The 28V rating
eliminates the overvoltage protection circuit required in a low
input voltage charger.
The charge current and the end-of-charge (EOC) current are
programmable with external resistors. When the battery
voltage is lower than typically 2.55V, the charger
preconditions the battery with typically 20% of the
programmed charge current. When the charge current
reduces to the programmable EOC current level during the
CV charge phase, an EOC indication is provided by the CHG
pin, which is an open-drain output. An internal thermal
foldback function protects the charger from any thermal
failure.
Two indication pins (PPR and CHG) allow simple interface to
a microprocessor or LEDs. When no adapter is attached or
when disabled, the charger draws less than 1μA leakage
current from the battery.
Features
Complete Charger for Single-Cell Li-ion/Polymer Batteries
Integrated Pass Element and Current Sensor
No External Blocking Diode Required
Low Component Count and Cost
1% Voltage Accuracy
Programmable Charge Current
Programmable End-of-Charge Current
Charge Current Thermal Foldback for Thermal
Protection
Trickle Charge for Fully Discharged Batteries
28V Maximum Voltage for the Power Input
Power Presence and Charge Indications
Less Than 1μA Leakage Current off the Battery When No
Input Power Attached or Charger Disabled
Ambient Temperature Range: -40°C to 85°C
8 Ld 2x3 DFN Packages
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Mobile Phones
Blue-Tooth Devices
PDAs
MP3 Players
Stand-Alone Chargers
Other Handheld Devices
Pinout
ISL6294
(8 LD DFN)
TOP VIEW
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL6294IRZ-T
(Note)
94Z
-40 to 85
8 Ld 2x3 DFN
(Pb-free)
L8.2x3
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
2
3
4
1
7
6
5
8
VIN
PPR
CHG
EN
BAT
IREF
IMIN
GND
Data Sheet
October 4, 2005
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