MAX1259

PRODUCTION

Battery Manager

Data Sheet (Rev. 3) Product Selection Table

Part Models: 6
1ku List Price: Starting From $5.26

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Overview

Switches to Backup Battery if Power Fails
Consumes Less than 100nA of Battery Current
Power-Fail Output Signals Primary Power-Supply Loss
Battery Monitor Indicates Low Battery
Battery Can Be Disconnected to Prevent Discharge During Shipping
Battery Automatically Reconnected when V_CC is Applied
Pin-Compatible with the DS1259
Supply Current Three Times Lower than DS1259
Available in Extended-Industrial and Military Temperature Ranges

The MAX1259 battery manager provides backup-battery switching for CMOS RAM, microprocessors, or other low-power logic ICs. It automatically switches to the backup battery when the primary power supply is interrupted. Low-loss switches guarantee an input-to-output differential of only 200mV while supplying 250mA from the primary power supply or 15mA from the battery.

Battery discharge during shipping does not occur in the MAX1259, since the backup battery can be disconnected by strobing the RST input.

A battery-fail output signal indicates when the backup battery is below +2V, and a power-fail output signal indicates when the primary power supply is low. The MAX1259 monitors the backup battery, warns of impending power failures, and switches the memory to the battery when failures occur. The MAX1259 is pin-compatible with the DS1259, but consumes three times less supply current. Commercial, extended, and military temperature range devices are available.

Applications

Battery Backup for CMOS RAM
Computers
Controllers
Uninterruptible Power Supplies

Part Models: 6
1ku List Price: Starting From $5.26

Documentation

Data Sheet 2

MAX1259: Battery Manager Data Sheet (Rev.3) 12/23/2014

MAX1259 10/10/2022

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX1259CPE+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX1259CWE+	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX1259CWE+T	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX1259EWE+	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX1259EWE+T	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX1259MLP/883B	Leadless Chip Carrier	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 2, 2023 - 2361E WAFER FAB
		pcn_2361e
MAX1259CPE+	PRODUCTION
MAX1259CWE+	PRODUCTION
MAX1259CWE+T	PRODUCTION
MAX1259EWE+
MAX1259EWE+T	Obsolete
MAX1259MLP/883B	PRODUCTION
Jan 3, 2018 - 1640 ASSEMBLY
		pcn_1640
MAX1259MLP/883B	PRODUCTION	pcn_1640

This is the most up-to-date revision of the Data Sheet.

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