Maxim > Products > Power and Battery Management > MAX17043, MAX17044

MAX17043, MAX17044

Compact, Low-Cost 1S/2S Fuel Gauges with Low-Battery Alert

Smarten Up Your Dumb Battery!

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
MAX17043	Active: In Production. See Ordering Information for details.
MAX17044	Active: In Production. See Ordering Information for details.

Description

The MAX17043/MAX17044 are ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17043 is configured to operate with a single lithium cell and the MAX17044 is configured for a dual-cell 2S pack.

The MAX17043/MAX17044 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 MAX17043/MAX17044 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 4	(PDF, 448kB)
E-Mail

NOTE: This product uses the following:
MAX17044K Custom Datasheet
MAX17043K Custom Datasheet
MAX17044K Custom
MAX17043K Custom

Key Features

Host-Side or Battery-Side Fuel Gauging
- 1 Cell (MAX17043)
- 2 Cell (MAX17044)
Precision Voltage Measurement
- ±12.5mV Accuracy to 5.00V (MAX17043)
- ±30mV Accuracy to 10.00V (MAX17044)
Accurate Relative Capacity (RSOC) Calculated from ModelGauge Algorithm
No Offset Accumulation on Measurement
No Full-to-Empty Battery Relearning Necessary
No Sense Resistor Required
External Alarm/Interrupt for Low-Battery Warning
2-Wire Interface
Low Power Consumption
Tiny, Lead-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
Smartphones

Key Specifications:

Battery Protectors, Selectors and Monitors

Part Number

Functions

Battery Type

Interface

Parameters Measured

V_SUPPLY
(V)

Package/Pins

Smallest Available Pckg.
(mm²)

Oper. Temp.
(°C)

Budgetary Price

min

max

max w/pins

See Notes

MAX17043

Fuel Gauge

1 Cell Li-Ion

2-Wire

State of Charge

Voltage

2.5

4.5

TDFN-EP/8

UCSP(R)/9

2.7

-40 to +85

$1.07 @1k

MAX17044

2 Cell Li-Ion

TDFN-EP/8

UCSP(R)/9

$1.15 @1k

See All Battery Protectors, Selectors and Monitors (34)

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

Application Notes

Tutorial 4659		Blood Glucose Meters
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Tutorial 4686		Important Design Considerations for Heart-Rate and Fitness Monitors
Tutorial 4688		Introduction to Spirometers and Important Design Considerations for Selecting Electrical Components
Tutorial 4691		Introduction to Hearing Aids and Important Design Considerations

Reliability Reports

Reliability Report:

MAX17043.pdf MAX17044.pdf

Software/Models

MAX17044K Custom Datasheet

MAX17043K Custom Datasheet

MAX17044K Custom

MAX17043K Custom

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX17043G+T			Active		TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX17043G+T10W			Active		TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX17043G+U			Active		TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX17043G-E+T			Active		TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX17043G-E+U			Active		TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX17043X+			Active		UCSP(R);9 pin;2.7 mm² Outline Drawing:21-0227 (PDF) Land Pattern: Not Available Use pkgcode/variation: R91A1+1*	-40°C to +85°C	See data sheet
MAX17043X+T10			Active		UCSP(R);9 pin;2.7 mm² Outline Drawing:21-0227 (PDF) Land Pattern: Not Available Use pkgcode/variation: R91A1+1*	-40°C to +85°C	See data sheet
MAX17043X+U		N/A	No Longer Available	MAX17041X+	UCSP(R);9 pin;2.7 mm² Outline Drawing:21-0227 (PDF) Land Pattern: Not Available Use pkgcode/variation: R91A1+1*	-40°C to +85°C	See data sheet
MAX17043X+W			Active		UCSP(R);9 pin;2.7 mm² Outline Drawing:21-0227 (PDF) Land Pattern: Not Available Use pkgcode/variation: R91A1+1*	-40°C to +85°C	See data sheet
MAX17044EVKIT+			Active		KIT; Land Pattern: Not Available		See data sheet
Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX17044G+T			Active		TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX17044G+U			Active		TDFN-EP;8 pin;6.3 mm² Outline Drawing:21-0174 (PDF) Land Pattern: 90-0091 (PDF) Use pkgcode/variation: T823+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX17044X+			Active		UCSP(R);9 pin;2.7 mm² Outline Drawing:21-0227 (PDF) Land Pattern: Not Available Use pkgcode/variation: R91A1+1*	-40°C to +85°C	See data sheet
MAX17044X+T10			Active		UCSP(R);9 pin;2.7 mm² Outline Drawing:21-0227 (PDF) Land Pattern: Not Available Use pkgcode/variation: R91A1+1*	-40°C to +85°C	See data sheet
MAX17044X+U		N/A	No Longer Available	MAX17043X+	UCSP(R);9 pin;2.7 mm² Outline Drawing:21-0227 (PDF) Land Pattern: Not Available Use pkgcode/variation: R91A1+1*	-40°C to +85°C	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.

Notes and Comments

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

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More Information

New Product Press Release

[ 2010-07-12 ]

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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.: 19-4811 Rev 4; 2011-08-22
This page last modified: 2011-08-22