MAX1773A

PRODUCTION

Power Source Selector for Dual-Battery Systems

Power Source Selector Minimizes System Cost and Complexity

Data Sheet (Rev. 2) Product Selection Table

Part Models: 2
1ku List Price: price unavailable

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Part Details

7-MOSFET Topology Offers Low-Cost Solution
Automatically Detects and Responds to:
- Low Battery Voltage Condition
- Battery Insertion and Removal
- AC Adapter Presence
Direct Drive of P-Channel MOSFETs
Simplifies Power Management µP Firmware
Extends Battery Life by Allowing Power Management µP to Enter Standby
4.75V to 28V AC Adapter Input Voltage Range
Integrated LDO with 1mA Drive Capability
Small Footprint 20-Pin TSSOP Package

Part Models: 2
1ku List Price: price unavailable

Documentation

Data Sheet 1

MAX1773-MAX1773A: Power Source Selector for Dual-Battery Systems Data Sheet (Rev.2) 05/15/2017

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
MAX1773AEUP+	Thin Shrink Small-Outline Package	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX1773AEUP+T	Thin Shrink Small-Outline Package	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 13, 2023 - 2361N WAFER FAB
		pcn_2361n
MAX1773AEUP+	PRODUCTION
MAX1773AEUP+T	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Product 1
MAX1645A		Advanced-Chemistry-Independent, Level-2 Battery Chargers with Input Current Limiting
Switching Battery Chargers 1
MAX1772	PRODUCTION	Low-Cost, Multichemistry Battery-Charger Building Block

Evaluation Kits

Evaluation Kit for the MAX1773

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Features and Benefits

+4.75V to +28V AC-Adapter Input Range
Up to 5A Steering Capability
P-Channel MOSFET Steering Switches
Adjustable Battery Minimum Voltage Level
SMBus Multiplexer
AC-Present and Battery-Status LEDs
Interfaces to MAX1772EVKIT Battery Charger
Surface-Mount Components
Fully Assembled and Tested

Product Details

The MAX1773 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that routes charge and discharge currents between two battery packs, a buck step-down Battery Chargers, and an AC-adapter power source. The circuit uses a MAX1773 IC in a 20-pin TSSOP package and is configured for an AC-adapter input range of +4.75VDC to +28VDC.

The EV kit uses seven P-channel MOSFETs to steer current between the power sources and the load. The battery minimum voltage level sets the threshold for battery undervoltage conditions and can be adjusted from +4.65V to +13V.

The EV kit features an SMBus™ signal multiplexer that routes SMBus signals for the smart battery packs. LEDs are provided to indicate the status of the AC adapter and battery packs. The MAX1773 EV kit also demonstrates low-current usage with several options to reduce current usage.

Applications

Dual-Battery Portable Equipment
Internet Tablets
Notebook and Subnotebook Computers
PDAs and Handy-Terminals

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