参数资料
型号: MAX1508ZETA+T
厂商: Maxim Integrated Products
文件页数: 1/11页
文件大小: 0K
描述: IC BATT CHARGER LI-ION 8-TDFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
功能: 充电管理
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4.25 V ~ 13 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-WDFN 裸露焊盘
供应商设备封装: 8-TDFN-EP(3x3)
包装: 带卷 (TR)
ATION
EVALU
AVAIL
19-2890; Rev 2; 8/05
KIT
ABLE
Linear Li+ Battery Charger with Integrated Pass FET,
Thermal Regulation, and ACOK in 3mm x 3mm TDFN
General Description
The MAX1508 is an intelligent, stand-alone constant-cur-
rent, constant-voltage (CCCV), thermally regulated linear
charger for a single-cell lithium-ion (Li+) battery. The
MAX1508 integrates the current-sense circuit, MOS pass
element, and thermal-regulation circuitry, and also elimi-
nates the reverse-blocking Schottky diode, to create the
simplest and smallest charging solution for hand-held
equipment.
The MAX1508 functions as a stand-alone charger to con-
trol the charging sequence from the prequalification state
through fast-charge, top-off charge, and full-charge indi-
cation. The MAX1508Y and MAX1508Z eliminate the pre-
qualification state to allow startup into a load without a
battery.
Proprietary thermal-regulation circuitry limits the die
temperature to +100°C when fast charging or while
exposed to high ambient temperatures, allowing maxi-
mum charging current without damaging the IC.
The MAX1508 achieves high flexibility by providing an
adjustable fast-charge current by an external resistor.
Other features include the charging status ( CHG ) of the
battery, an active-low control input ( EN ) for the
MAX1508 and MAX1508Z (active-high control input for
the MAX1508Y), and an active-low input power-source
detection output ( ACOK ).
The MAX1508 accepts a +4.25V to +13V supply, but dis-
Features
? Stand-Alone Linear 1-Cell Li+ Battery Charger
? No External FET, Reverse-Blocking Diode, or
Current-Sense Resistor Required
? Programmable Fast-Charge Current (0.8A max)
? Proprietary Die-Temperature Regulation Control
(+100°C)
? +4.25V to +13V Input Voltage Range with Input
Overvoltage Protection (OVP) Above +7V
? Charge-Current Monitor for Fuel Gauging
? Low Dropout Voltage—130mV at 0.425A
? Input Power-Source Detection Output ( ACOK )
? Soft-Start Limits Inrush Current
? No Prequalification State for the MAX1508Y and
MAX1508Z
? Charge Status Output ( CHG ) for LED or
Microprocessor Interface
? Small 3mm x 3mm 8-Pin Thin DFN Package,
0.8mm High
? Active-Low Charge Enable ( EN ) (MAX1508 and
MAX1508Z)
? Active-High Charge Enable (EN) (MAX1508Y)
Ordering Information
ables charging when the input voltage exceeds +7V to
protect against unqualified or faulty AC adapters. The
MAX1508 operates over the extended temperature
range (-40°C to +85°C) and is available in a compact
PART
MAX1508ETA-T
TEMP RANGE PIN-PACKAGE
-40 ° C to +85 ° C 8 Thin DFN-EP*
TOP
MARK
AHF
8-pin thermally enhanced 3mm x 3mm thin DFN pack-
age with 0.8mm height.
Applications
Cellular and Cordless Phones
PDAs
MAX1508ETA+T -40 ° C to +85 ° C 8 Thin DFN-EP*
* EP = Exposed paddle.
+ Denotes lead-free package.
Ordering Information continued at end of data sheet.
AHF
Digital Cameras and MP3 Players
USB Appliances
Charging Cradles and Docks
TOP VIEW
Pin Configuration
Bluetooth? Equipment
8
7
6
5
MAX1508
Typical Operating Circuit appears at end of data sheet.
MAX1508Y
MAX1508Z
+ 1
2
3
4
3mm x 3mm THIN DFN
( ) ARE FOR THE MAX1508Y ONLY
Bluetooth is a trademark of Ericsson.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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