Advanced Smart Battery Pack Controller

MAX1780 Advanced Battery Pack Is a Smart Battery Pack Supervisor That Integrates a User-Programmable Microcontroller Core, Coulomb Counting Fuel Gauge, and Primary Pack Protector

Overview

Technical Documents

Ordering Info

Status

All versions are No Longer Available. See Ordering Information for recommended replacements.

Description

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.

Data Sheet

No Longer Available

Key Features

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

Applications/Uses

Data Acquisition
Proprietary Battery Packs
Remote Data Logging
SMBus™ Battery Packs

More Information

New Product Press Release

[ 2000-12-27 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-1843 Rev 1; 2003-03-05
This page last modified: 2008-04-30