Maxim > Products > Power and Battery Management > MAX1789, MAX17892

MAX1789, MAX17892

Advanced, Smart Battery-Pack Controllers

Industry's Smallest SBS-Compliant Battery Fuel Gauge with nFET Protection Drivers

Overview

Technical Documents

Ordering Info

Status

Active: Data sheet on request only

Description

The MAX1789/MAX17892 smart battery-pack controllers integrate a user-programmable microcontroller core, a coulomb-counting fuel gauge, a multichannel data-acquisition unit, and a system management bus (SMBus™) v1.1-compliant master/slave SMBus interface. The 8-bit, RISC microcontroller core has an integrated 8kB of user-programmable flash and a 12kB program ROM library, which provides battery-pack designers with complete flexibility in developing fuel gauging and control algorithms. The MAX1789/MAX17892 are equipped with in-system debug (ISD) capability for efficient development and debugging.

The MAX1789/MAX17892 include a 12-bit data-acquisition unit to measure individual cell voltages, thermistors, current, and pack voltage. 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 MAX1789/MAX17892 have a wide +4V to +25V operating voltage range. The MAX1789/MAX17892 are available in a lead-free, 28-pin TSSOP package. The MAX1789/MAX17892 evaluation kit is available to assist with development.

Data Sheet

Request Full Data Sheet

An evaluation kit is available: MAX1789EVMINIQU

NOTE: This product uses the following:
MAX1789UCLDR+ Software

Key Features

Accurate Fuel Gauge Uses V-to-F Method
- < 1µV Input Offset Voltage
- < 1% Gain Error
- 139nAh Resolution (5mΩ)
- No Calibration Required
8-Bit RISC Microcontroller Core
8kB of Program Flash
12kB of Program ROM
512 Bytes of Data Flash
648 Bytes of RAM
12-Bit ADC
Watchdog Timer
In-System Debug
Eliminates Separate Primary-Protection IC
- Individual Cell-Voltage Measurements with 0.5% Accuracy
- n-Channel MOSFET Gate Drivers
- Low-Current Charge Pump
- 8% Accurate Overcurrent Protection
- Programmable Overcurrent Delay Timers
3-Pin, 6-LED PWM Driver (Only for MAX1789)
Random-Number Generator (RNG) for Encryption
SMBus v1.1 Compliant with Master Capability
Typical Operating Current < 250µA
Typical Shutdown Current < 10nA
Integrated 32kHz Oscillator: No Crystal
Fully Integrated LDO (V_IN = +4V to +25V)

Applications/Uses

Data-Acquisition Systems
Notebook Battery Packs
Proprietary Battery Packs
Remote Data Logging

Reliability Reports

Reliability Report:	MAX1789.pdf
Show FIT data for:
Request Reliability Report for:

Software/Models

MAX1789UCLDR+ Software

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX17892EUI+			Active: Data sheet on request only	TSSOP;28 pin;64.7 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0171 (PDF) Use pkgcode/variation: U28+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX17892EUI+T			Active: Data sheet on request only	TSSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1789EUI+			Active: Data sheet on request only	TSSOP;28 pin;64.7 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0171 (PDF) Use pkgcode/variation: U28+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1789EUI+CBH			Active: Data sheet on request only	TSSOP;28 pin;64.7 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0171 (PDF) Use pkgcode/variation: U28+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1789EUI+G069			Active: Data sheet on request only	TSSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1789EUI+T			Active: Data sheet on request only	TSSOP;28 pin;64.7 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0171 (PDF) Use pkgcode/variation: U28+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1789EUI+TG069			Active: Data sheet on request only	TSSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1789EVKIT+			Active: Data sheet on request only	KIT; Land Pattern: Not Available		See data sheet

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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

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Evaluation Kits

MAX1789EVMINIQU

Evaluation System for the MAX1789

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