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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 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

数据手册DataSheet

开发工具

• MAX1501EVKIT

订购型号