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Status

Active: In Production.

Description

Request Full Data Sheet The MAX1785 smart battery-pack controller integrates a user-programmable microcontroller core, a Coulomb-counting fuel gauge, a multichannel data-acquisition unit, and an SMBus™ v1.1-compliant master/slave interface. The 8-bit RISC microcontroller core has an integrated 32kB of user-programmable flash, which provides battery-pack designers with complete flexibity in developing fuel gauging and control algorithms. The MAX1785 is equipped with in-system debug (ISD) capability for efficient firmware development and debugging. The MAX1785 includes a 12-bit data-acquisition unit to measure individual cell voltages, thermistor, instant current, and pack voltage. Individual cell voltage measurements with 0.5% accuracy and overcurrent protection allow the MAX1785 to eliminate a separate first-level protection IC. Internally adjustable overcurrent thresholds and delay timers provide a flexible solution. The integrating fuel gauge module provides a typical input offset of less than 1µV and gain accuracy of better than 1% with no trimming required during pack manufacture. The MAX1785 has a wide 4V to 25V operating voltage range. The MAX1785 is available as a 38-pin TSSOP. The MAX1785 EV kit is available to assist with development.

An evaluation kit is available:  MAX1785EVSYS  

Key Features		Applications/Uses
Accurate Fuel Gauge Uses V-to-F Method 8-Bit RISC Microcontroller Core 32kB of Program Flash 512 Bytes of Data Flash 776 Bytes of RAM 12-Bit ADC Watchdog Timer In-System Debug for Firmware Debugging Integrated Development Environment		Notebook Battery Packs Proprietary Battery Packs Remote Data Logging

Evaluation Kits

MAX1785EVSYS

Design Guides

Battery Management (PDF) Power Management for Battery-Powered Equipment (PDF)

Reliability Reports

Reliability Report: MAX1785.pdf Show FIT data for: MAX1785

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-4 of 4

MAX1785	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1785EUU+TG069			Active	TSSOP;38 pin;64 mm² Outline Drawing: 21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1785EUU+G069			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1785EUU+T			Active	TSSOP;38 pin;64 mm² Outline Drawing: 21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1785EUU+			Active	TSSOP;38 pin;64 mm² Outline Drawing: 21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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