MAX1508Y:线性Li+电池充电器,带有集成调整FET、热调节和ACOK,3mm x 3mm TDFN封装

The MAX1508 is an intelligent, stand-alone constant-current, 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 eliminates 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 control the charging sequence from the prequalification state through fast-charge, top-off charge, and full-charge indication. The MAX1508Y and MAX1508Z eliminate the prequalification 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 maximum 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 (active-low CHG) of the battery, an active-low control input (active-low EN) for the MAX1508 and MAX1508Z (active-high control input for the MAX1508Y), and an active-low input power-source detection output (active-low ACOK). The MAX1508 accepts a +4.25V to +13V supply, but disables 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 8-pin thermally enhanced 3mm x 3mm thin DFN package with 0.8mm height.

关键特性
  • 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 (Active-Low ACOK)
  • Soft-Start Limits Inrush Current
  • No Prequalification State for the MAX1508Y and MAX1508Z
  • Charge Status Output (Active-Low CHG) for LED or Microprocessor Interface
  • Small 3mm x 3mm 8-Pin Thin DFN Package, 0.8mm High
  • Active-Low Charge Enable (Active-Low EN) (MAX1508 and MAX1508Z)
  • Active-High Charge Enable (EN) (MAX1508Y)
功能框图
MAX1508、MAX1508Y、MAX1508Z:典型工作电路
产品应用
  • Bluetooth®设备
  • 蜂窝电话/无绳电话
  • 充电托架和坞站
  • 数码相机与MP3播放器
  • PDA
  • USB应用
关键参数
Part NumberProtected VIN
(V)
Charging VIN
(V)
Charge Rate Set byMax. ICHG
(A)
Charge TerminationCharge RegulationOper. Temp.
(°C)
Package/PinsBudgetary
Price
maxSee Notes
MAX1508137Resistor0.8External ControlLinear-40 to +85
TDFN-EP/8
$2.01 @1k
数据手册DataSheet
英文MAX1508-MAX1508Z.pdfRev 2; 09/2005
开发工具
技术资料
质量和环境数据
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1508YETA+生产中TDFN-EP,;8引脚;9.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX1508YETA+T生产中TDFN-EP,;8引脚;9.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX1508YETA-T停止供货MAX1508YETA+TTDFN-EP,;8引脚;9.6mm²-40°C至+85°CRoHS/无铅:否
MAX1508-MAX1508Z.pdf MAX1508
MAX1508-MAX1508Z.pdf MAX1508Z
Understanding Li+ Battery Operation Lessens Charging Safety Concerns MAX1873
MAX1508.pdf MAX1508