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MAX1780

高级智能电池组控制器

MAX1780提供智能化的电池组监控方案，集成用户可编程微控制器核、库伦电量计数器和主要的电池保护电路

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概述

说明

The MAX1780 Advanced Battery Pack Controller is a smart battery pack supervisor that integrates a User programmable Microcontroller Core, Coulomb-Counter-based Fuel Gauge, a multi-channel Data Acquisition Unit, a high-speed SPI Interface, and a Master/Slave SMBus Interface. The 8-bit, RISC, Microcontroller core is user programmable, and provides battery pack designers with complete flexibility in developing fuel gauging and control algorithms. The Data Acquisition Unit can measure individual cell voltages to within 50mV, total battery stack voltage (up to 20.48V), and chip internal/external temperature.

The user adjustable overcurrent comparators, along with individual cell voltage measurements, allow the MAX1780 to eliminate a separate primary pack protection IC. The MAX1780 can be directly connected to 2 to 4 series Lithium Ion cells, and supplies itself through a fully integrated 3.4V lowdrop out linear regulator.

关键特性

User Programmable Using an External EEPROM
Accurate Fuel Gauge Uses V-to-F Method
- < 1µV Input Offset Voltage
- No External Calibration Required
Eliminates Separate Primary Protection IC
- 50mV Accurate Individual Cell Voltage
Measurements
- Built in Protection MOSFET Gate Drivers
- Over Charge & Discharge Current Protection
Fully Integrated LDO (V_IN = 4V to 28V)
8-bit RISC Microcontroller Core
- On-board 1.5K ROM & 0.5K Program RAM
- 144 Bytes Data Memory
- Fast Start-up 3.5MHz Instruction Oscillator
- Watch Dog Timer
Hardware SMBus with Master Capability
GPIO Port and High Voltage LED Drivers
Typical Operating Currents < 200µA Achievable
Typical Shutdown Current of 1nA

应用

数据采集
专用电池组
远端数据记录
SMBus™电池组

设计资源

质量与环境

申请可靠性报告: MAX1780

型号	生产流程	工艺	样本量	不合格	FIT @ 25°C	FIT @ 55°C	Material Composition

备注：通过技术手段对故障率进行汇总，并映射到相关的材料部件号。故障率与被测件的数量密切相关。

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