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Data Sheet

FULL DATA SHEET (PDF, 332kB) Download   E-Mail

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.

An evaluation kit is available:  MAX1906EVKIT  

Key Features		Applications/Uses
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)		2-, 3-, or 4-Series Li+ Battery Packs for Portable Products

Diagram

Typical Operating Circuit

Evaluation Kits

MAX1906EVKIT

Design Guides

Power Management for Battery-Powered Equipment (PDF)

Reliability Reports

Show FIT data for: MAX1906 Request Reliability Report for: MAX1906

Software/Models

none

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-7 of 7

MAX1906	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1906SEGE		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906VEGE		N/A	No Longer Available	QFN;16 pin;26 mm² Outline Drawing: 21-0091 (PDF) Land Pattern: 90-0274 (PDF) Use pkgcode/variation: G1655-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1906VEGE-T		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906XEGE		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906SEEE		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906VEEE		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1906XEEE		N/A	No Longer Available	Land Pattern: Not Available	-40°C to +85°C	See data sheet

More Information

New Product Press Release 2002-05-28

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Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

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