Maxim > Products > Power and Battery Management > MAX1906

MAX1906

Li+ Battery-Pack Protector with Integrated Fuse Driver

Overview

Technical Documents

Ordering Info

Status

All versions are No Longer Available.

Description

The MAX1906 protects against overvoltage conditions in lithium-ion/lithium polymer (Li+) battery packs by blowing a three-terminal protection fuse. The IC should be used in conjunction with resettable protection circuits to provide a high level of safety against overcharging Li+ batteries. It can be used with 2-, 3-, or 4-series cell battery packs.

The MAX1906 monitors individual cell voltages. If any cell voltage exceeds the overvoltage threshold for greater than 2.1s, the MAX1906 activates an internal SCR. The SCR sinks sufficient current to blow an external protection fuse, permanently disabling the battery pack. Alternatively, the IC can drive the gate of an external MOSFET to blow the fuse.

The MAX1906 also offers protection against disconnected voltage sense pins. If a disconnected pin is detected, the DISCON output is forced low. The MAX1906 includes a test mode, which determines if the circuit is operating correctly while in an assembled battery pack.

The low-cost MAX1906 is available in a thermally enhanced 16-pin QFN package.

Data Sheet

Download	Rev 0	(PDF, 332kB)
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Key Features

Protects Against Overvoltage
±1% Accurate Protection Thresholds
Integrated 2.1s Fault-Delay Timer
Built-in 1.5A SCR Fuse Driver
Test Mode for Functional Verification in Assembled Pack
8µA (max) Supply Current
1µA (max) Standby Current
Protects Against Disconnected B1P-B4P Pins
Protects 2-, 3-, or 4-Series Li+ Battery Packs
Available in Small 16-Pin QFN Package (5mm x 5mm)

Applications/Uses

2-, 3-, or 4-Series Li+ Battery Packs for Portable Products

Diagram

Typical Operating Circuit

Reliability Reports

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Software/Models

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Ordering Information

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Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1906SEEE		N/A	No Longer Available	QSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906SEGE		N/A	No Longer Available	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906VEEE		N/A	No Longer Available	QSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906VEGE		N/A	No Longer Available	QFN;16 pin;26 mm² Land Pattern: Not Available Use pkgcode/variation: G1655-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1906VEGE-T		N/A	No Longer Available	QFN;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906XEEE		N/A	No Longer Available	QSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906XEGE		N/A	No Longer Available	QFN;16 pin Land Pattern: Not Available	-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.

Products with Similar Part Numbers

MAX1906EVKIT

Evaluation Kit for the MAX1906X, MAX1906V, MAX1906S

More Information

New Product Press Release

[ 2002-05-28 ]

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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.: 19-2455 Rev 0; 2002-05-24
This page last modified: 2007-07-11