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MAX17040, MAX17041
Compact, Low-Cost 1S/2S Fuel Gauges
Smarten Up Your Dumb Battery!
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Status
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.
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Data Sheet
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NOTE: This product uses the following:MAX17041K Custom DatasheetMAX17040K Custom DatasheetMAX17040K CustomMAX17041K 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
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Applications/Uses
- Digital Still Cameras
- Digital Video Cameras
- GPS Systems
- Handheld and Portable Applications
- MP3 Players
- Portable DVD Players
- Smart Phones
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Key Specifications:
| Battery Protectors, Selectors and Monitors |
| Part Number |
Functions |
Battery Type |
Interface |
Parameters Measured |
VSUPPLY
(V) |
VSUPPLY
(V) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
Budgetary Price |
| min |
max |
max w/pins |
See Notes |
| MAX17040 |
Fuel Gauge |
1 Cell Li-Ion |
2-Wire |
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2.5 |
4.5 |
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6.3 |
-40 to +85 |
$0.95 @1k |
| MAX17041 |
2 Cell Li-Ion |
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2.7 |
$1.03 @1k |
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See All Battery Protectors, Selectors and Monitors (34)
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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.
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Diagram
Simplified Operating Circuit
Application Notes
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Recommended Replacement |
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX17040EVKIT+
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Active |
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KIT;
Land Pattern: Not Available
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See data sheet
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| MAX17040G+T
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Active |
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TDFN-EP;8 pin;6.3 mm²
Outline Drawing:21-0174 (PDF)
Land Pattern: 90-0091 (PDF)
Use pkgcode/variation: T823+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX17040G+U
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Active |
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TDFN-EP;8 pin;6.3 mm²
Outline Drawing:21-0174 (PDF)
Land Pattern: 90-0091 (PDF)
Use pkgcode/variation: T823+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX17040K
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N/A |
No Longer Available |
MAX17040EVKIT+
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TDFN-EP;8 pin;6.3 mm²
Outline Drawing:21-0174 (PDF)
Land Pattern: 90-0091 (PDF)
Use pkgcode/variation: T823+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX17041G+T
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Active |
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TDFN-EP;8 pin;6.3 mm²
Outline Drawing:21-0174 (PDF)
Land Pattern: 90-0091 (PDF)
Use pkgcode/variation: T823+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX17041G+U
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Active |
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TDFN-EP;8 pin;6.3 mm²
Outline Drawing:21-0174 (PDF)
Land Pattern: 90-0091 (PDF)
Use pkgcode/variation: T823+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX17041K
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N/A |
No Longer Available |
MAX17041EVKIT+
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TDFN-EP;8 pin;6.3 mm²
Outline Drawing:21-0174 (PDF)
Land Pattern: 90-0091 (PDF)
Use pkgcode/variation: T823+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX17041X+
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Active |
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UCSP(R);9 pin;2.7 mm²
Outline Drawing:21-0227 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: R91A1+1*
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-40°C to +85°C
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See data sheet
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| MAX17041X+T10
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Active |
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UCSP(R);9 pin;2.7 mm²
Outline Drawing:21-0227 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: R91A1+1*
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-40°C to +85°C
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See data sheet
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| MAX17041X+U
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N/A |
No Longer Available |
MAX17044X+
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UCSP(R);9 pin;2.7 mm²
Outline Drawing:21-0227 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: R91A1+1*
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-40°C to +85°C
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See data sheet
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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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Notes and Comments
Fuel Gauge Accurately Reports Battery Capacity from System Side and Maximizes Battery Life
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Information Index
Document Ref.: 19-5210
Rev 6;
2011-08-22
This page last modified: 2012-02-27
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