Maxim > Products > Power and Battery Management > MAX17040, MAX17041

MAX17040, MAX17041

Compact, Low-Cost 1S/2S Fuel Gauges

Smarten Up Your Dumb Battery!

Overview

Status

Part Number	Status
MAX17040	Active: In Production. See Ordering Information for details.
MAX17041	Active: In Production. See Ordering Information for details.

Description

The MAX17040/MAX17041 are ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17040 is configured to operate with a single lithium cell and the MAX17041 is configured for a dual-cell 2S pack.

The MAX17040/MAX17041 use a sophisticated Li+ battery-modeling scheme, called ModelGauge™ to track the battery's relative state-of-charge (SOC) continuously over a widely varying charge/discharge profile. Unlike traditional fuel gauges, the ModelGauge algorithm eliminates the need for battery relearn cycles and an external current-sense resistor. Temperature compensation is possible in the application with minimal interaction between a µC and the device.

A quick-start mode provides a good initial estimate of the battery's SOC. This feature allows the IC to be located on system side, reducing cost and supply chain constraints on the battery. Measurement and estimated capacity data sets are accessed through an I²C interface. The MAX17040/MAX17041 are available in either a 0.4mm pitch 9-bump UCSP™ or 2mm x 3mm, 8-pin TDFN lead-free package.

Data Sheet

Download	Rev 8	(PDF, 325.4kB)
Email

NOTE: This product uses the following:
MAX17041K Custom Datasheet
MAX17040K Custom Datasheet
MAX17040K Custom
MAX17041K Custom

Key Features

Host-Side or Battery-Side Fuel Gauging
- 1 Cell (MAX17040)
- 2 Cell (MAX17041)
Precision Voltage Measurement
- ±12.5mV Accuracy to 5.00V (MAX17040)
- ±30mV Accuracy to 10.00V (MAX17041)
Accurate Relative Capacity (RSOC) Calculated from ModelGauge Algorithm
No Offset Accumulation on Measurement
No Full-to-Empty Battery Relearning Necessary
No Sense Resistor Required
2-Wire Interface
Low Power Consumption
Tiny, Lead(Pb)-Free, 8-pin, 2mm x 3mm TDFN Package or Tiny 0.4mm Pitch 9-Bump UCSP Package

Applications/Uses

Digital Still Cameras
Digital Video Cameras
GPS Systems
Handheld and Portable Applications
MP3 Players
Portable DVD Players
Smart Phones

Key Specifications:

Battery Monitors, Protectors, and Selectors

Part Number

Functions

Battery Type

Interface

Parameters Measured

Fuel Gauge Algorithm

V_SUPPLY
(V)

Oper. Temp.
(°C)

Budgetary
Price

min

max

See Notes

MAX17040

Fuel Gauge

1 Cell Li-Ion

2-Wire

State of Charge

Voltage

ModelGauge

2.5

4.5

-40 to +85

$0.94 @1k

MAX17041

2 Cell Li-Ion

$1.21 @1k

See All Battery Monitors, Protectors, and Selectors (35)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Simplified Operating Circuit

Notes and Comments

Fuel Gauge Accurately Reports Battery Capacity from System Side and Maximizes Battery Life

More Information

New Product Press Release

[ 2010-07-12 ]

Didn't Find What You Need?

Information Index

Overview		Design Resources		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Technical Documents Evaluation Kits 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.: 19-5210 Rev 8; 2012-08-06
This page last modified: 2012-08-06