MAX1501:高集成度、线性电池充电器,带有热调节,用于便携式应用

首款带温度调节的CC-CV电池充电器,提供过压保护,适用于便携产品

The MAX1501 intelligent, constant-current, constant-voltage (CCCV), temperature-regulated battery charger charges a single lithium-ion (Li+) cell or three-cell NiMH/NiCd batteries. The device integrates the current-sense resistor, PMOS pass element, and thermal-regulation circuitry, while eliminating the reverse-blocking Schottky diode to create the simplest charging solution for hand-held equipment. For single-cell Li+ batteries, the MAX1501 functions as a stand-alone charger to control the charging sequence from the prequalification state through fast charge, top-off, and charge termination. With 3-cell NiMH/NiCd batteries, the MAX1501 requires collaboration with a microcontroller to determine the best charging algorithm. Proprietary thermal-regulation circuitry limits the die temperature when fast charging or while exposed to high ambient temperatures, allowing maximum charging current without damaging the charger. The MAX1501 continually supplies a regulated output voltage under no-battery conditions, allowing battery changing without interrupting system power. The device achieves high flexibility by providing an adjustable fast-charge current, top-off current, safety timer (disabled in the MAX1501Z), and thermal-regulation setpoint. Other features include input power detection (active-low ACOK) and input under-/overvoltage protection. The MAX1501 provides active-low control inputs. The MAX1501 accepts a 4.5V to 13V supply, but disables charging when the input voltage exceeds 6.5V, preventing excessive power dissipation. The MAX1501 operates over the extended temperature range (-40°C to +85°C) and is available in a compact 16-pin thermally enhanced 5mm x 5mm thin QFN package with 0.8mm profile.

关键特性
  • Stand-Alone 1-Cell Li+ Charging, Microprocessor- Controlled 3-Cell NiMH/NiCd Charging
  • No FET, Reverse-Blocking Diode, or Current- Sense Resistor Required
  • 1.4A (max) Programmable Fast-Charge Current
  • +95°C, +115°C, and +135°C Proprietary Programmable Die Temperature Regulation Control
  • 4.5V to 13V Input Voltage Range with Input Overvoltage (OVLO) Protection Above 6.5V
  • Programmable Top-Off Current Threshold: 10%, 20%, or 30% of the Fast-Charge Current
  • Charge-Current Monitor for Fuel Gauging
  • Programmable Safety Timer (3, 4.5, or 6 hours)
  • Input Power Detection Output (active-low ACOK) and Charge Enable Input (active-low CHGEN)
  • Automatic Recharge
  • Digital Soft-Start Limits Inrush Current
  • Charge Status Outputs for LEDs or µP Interface
功能框图
MAX1501: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
MAX1501136.25Resistor1.4TimerLinear-40 to +85
TQFN/16
$2.20 @1k
数据手册DataSheet
英文MAX1501.pdfRev 2; 05/2014
开发工具
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1501ETE停止供货MAX1501ETE+TQFN,;16引脚;26mm²-40°C至+85°CRoHS/无铅:否
MAX1501ETE+生产中TQFN,;16引脚;26mm²-40°C至+85°CRoHS/无铅:无铅
MAX1501ETE+T生产中TQFN,;16引脚;26mm²-40°C至+85°CRoHS/无铅:无铅
MAX1501ETE-T停止供货MAX1501ETE+TQFN;16引脚-40°C至+85°C参考数据资料
MAX1501ETE/V+生产中TQFN,;16引脚;26mm²-40°C至+85°CRoHS/无铅:无铅
MAX1501ETE/V+TNRNDQFN;-40°C至+85°C参考数据资料
MAX1501ZETE停止供货MAX1501ZETE+TQFN,;16引脚;26mm²-40°C至+85°CRoHS/无铅:否
MAX1501ZETE+生产中TQFN,;16引脚;26mm²-40°C至+85°CRoHS/无铅:无铅
MAX1501ZETE+T生产中TQFN,;16引脚;26mm²-40°C至+85°CRoHS/无铅:无铅
MAX1501ZETE-T停止供货MAX1501ZETE+TQFN;16引脚-40°C至+85°C参考数据资料
MAX1501.pdf MAX1501
MAX1501.pdf MAX1501