LTC1760

PRODUCTION

Dual Smart Battery System Manager

Part Models: 4
1ku List Price: Starting From $10.45

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Overview

SMBus Charger/Selector for Two Smart Batteries*
Voltage and Current Accuracy within 0.2% of Value Reported by Battery
Simplifies Construction of “Smart Battery System Manager”
Includes All SMBus Charger V1.1 Safety Features
Supports Autonomous Operation without a Host
Allows Both Batteries to Discharge Simultaneously into Single Load with Low Loss (Ideal Diode)
SMBus Switching for Dual Batteries with Alarm Monitoring for Charging Battery at All Times
Pin Programmable Limits for Maximum Charge Current and Voltage Improve Safety
Fast Autonomous Power Path^™ Switching (<10µs)
Low Loss Simultaneous Charging of Two Batteries
>95% Efficient Synchronous Buck Charger
AC Adapter Current Limiting* Maximizes Charge Rate
SMBus Accelerator Improves SMBus Timing**
Available in 48-Lead TSSOP Package

The LTC1760 Smart Battery System Manager is a highly-integrated SMBus Level 3 battery charger and selector intended for products using dual smart batteries. Three SMBus interfaces allow the LTC1760 to servo to the internal voltage and currents measured by the batteries while allowing an SMBus Host device to monitor either battery’s status. Charging accuracy is determined by the battery’s internal voltage and current measurements, typically better than ±0.2%.

A proprietary PowerPath architecture supports simultaneous charging or discharging of both batteries. Typical battery run times are extended by up to 10%, while charging times are reduced by up to 50%. The LTC1760 automatically switches between power sources in less than 10μs to prevent power interruption upon battery or wall adapter removal.

The LTC1760 implements all elements of a version 1.1 “Smart Battery System Manager” except for the generation of composite battery information. An internal multiplexer cleanly switches the SMBus Host to either of the two attached Smart Batteries without generating partial messages to batteries or SMBus Host. Thermistors on both batteries are automatically monitored for temperature and disconnection information (SafetySignal).

Applications

Portable Computers and Instruments
Standalone Dual Smart Battery Chargers
Battery Backup Systems

Part Models: 4
1ku List Price: Starting From $10.45

Documentation

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
LTC1760CFW#PBF	48-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1760CFW#TRPBF	48-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1760IFW#PBF	48-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1760IFW#TRPBF	48-Lead TSSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2019 - 19_0009 Assembly Site Transfer of Select 48L TSSOP Products from Amkor to ATEC Philippines
		PCN19_0009_Form Material_Report Qualification Results Summary
LTC1760CFW#PBF	PRODUCTION
LTC1760CFW#TRPBF	PRODUCTION
LTC1760IFW#PBF	PRODUCTION
LTC1760IFW#TRPBF	PRODUCTION

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

Software Resources

Device Drivers 1

LTC1760 GitHub Linux Driver Source Code

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Battery Charger ICs 1
LTM8062	RECOMMENDED FOR NEW DESIGNS	32V_IN, 2A μModule (Power Module) Power Tracking Battery Charger
Level Translators & Buffers 1
LTC4307	PRODUCTION	Low Offset Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery
Protection Switches & Controllers 2
LTC2954	RECOMMENDED FOR NEW DESIGNS	Push Button On/Off Controller with µP Interrupt
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection

Evaluation Kits

LTC1760CFW Demo Board | Dual Li-Ion Smart Battery Charger, VIN = 12V to 20V, Charge Current = 4A Max.

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Product Details

Demonstration circuit 486B is a dual Smart Battery PowerPath and charger controller featuring the LTC1760. The input voltage is 12 to 20V. The charger output voltage is programmed SMBus serial interface. The maximum charge current is 4A. The demo board has been optimized to work with 2, 3 and 4- Cell Li-ion battery packs. A jumper is provided to select trip for low battery voltage (LOBAT), VLIMIT (VLIM), and ILIMIT (ILIM). The LTC1760 follows the Smart Battery Standards for the Smart Battery System Manager (SBSM) specification.