MAX1758 - 独立的开关模式Li+电池充电器，内置28V开关

MAX1758是Maxim美信半导体公司的一款电池管理产品，MAX1758是独立的开关模式Li+电池充电器，内置28V开关，本站介绍了MAX1758的封装应用图解、特点和优点、功能等，并给出了与MAX1758相关的Maxim元器件型号供参考。

MAX1758 - 独立的开关模式Li+电池充电器，内置28V开关 - 电池管理 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX1758 is a switch-mode lithium-ion (Li+) battery charger that charges one-to-four cells. It provides a regulated charging current accurate to ±10% and a regulated voltage with only a ±0.8% total voltage error at the battery terminals. The internal high-side switch delivers a programmable current of up to 1.5A to charge the battery. The built-in safety timer automatically terminates charging once the adjustable time limit has been reached.

The MAX1758 regulates the voltage set point and charging current using two loops that work together to transition smoothly between voltage and current regulation. An additional control loop monitors the total current drawn from the input source (charging + system), and automatically reduces battery-charging current, preventing overload of the input supply and allowing the use of a low-cost wall adapter.

The per-cell battery regulation voltage is set between 4.0V and 4.4V using standard 1% resistors. The number of cells is set from 1-to-4 by pin strapping. Battery temperature is monitored by an external thermistor to prevent charging outside the acceptable temperature range.

The MAX1758 is available in a space-saving 28-pin SSOP package. Use the MAX1758EVKIT to help reduce design time. For a stand-alone charger with a 14V switch, refer to the MAX1757 data sheet. For a charger controller capable of up to 4A charging current, refer to the MAX1737 data sheet.

关键特性

以下关键特性由Maxim美信半导体提供：

Stand-Alone Charger for Up to 4 Li+ Batteries

±0.8% Battery Regulation Voltage Accuracy

Low-Dropout 98% Duty Cycle

Safely Precharges Near-Dead Cells

Continuous Voltage and Temperature Monitoring

0.1µA Shutdown Battery Current

Input Voltage Up to 28V

Up to 1.5A Programmable Charge Current

Safety Timer Prevents Overcharging

Input Current Limiting

Space-Saving 28-Pin SSOP

300kHz PWM Oscillator Reduces Noise

热门应用

台式摇篮架充电器

手持式仪表(PDA、掌上电脑)

Li+电池组

笔记本电脑

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