LTC4110

PRODUCTION

Battery Backup System Manager

Part Models: 2
1ku List Price: Starting From $10.96

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Overview

Complete Backup Battery Manager for Li-Ion/Polymer, Lead Acid, NiMH/NiCd Batteries and Super Capacitors
Charge and Discharge Battery with Voltages Above and Below the Input Supply Voltage
“No Heat” Battery Calibration Discharge Using System Load
Automatic Battery Backup with Input Supply Removal Using PowerPath^™ Control
Standalone for Li-Ion/Polymer, SLA, and Supercaps
Optional SMBus/I²C Support Allows Battery Capacity Calibration Operation with Host
Over- and Under-Battery Voltage Protection
Adjustable Battery Float Voltage
Precision Charge Voltage ±0.5%
Programmable Charge/Calibration Current Up to 3A with ±3% Accuracy
Optional Temperature Qualiﬁed Charging
Wide Backup Battery Supply Range: 2.7V to 19V
Wide Input Supply Range: 4.5V to 19V
38-Lead (5mm × 7mm) QFN Package

The LTC4110 is a complete single chip, high efficiency, ﬂyback battery charge and discharge manager with automatic switchover between the input supply and the backup battery or super capacitor. The IC provides four modes of operation: battery backup, battery charge, battery calibration and shutdown. Battery backup and battery charge are automatic standalone modes, while the optional calibration mode requires a CPU host to communicate over an SMBus. During calibration the ﬂyback charger is used in reverse to discharge the battery with a programmable constant current into the system load eliminating heat generation. Three status outputs can be individually reconfigured over the SMBus to become GPIOs. User programmable over-discharge protection is provided. The SHDN pin isolates the battery to support shipping the product with a charged battery installed.

Multiple LTC4110s can be combined to form a redundant battery backup system or increase the number of battery packs to achieve longer backup run times.

The LTC4110 is available in a low proﬁle (0.75mm), 38-pin 5mm × 7mm QFN package. The QFN features an exposed metal die mount pad for optimum thermal performance.

Applications

Backup Battery Systems
Server Memory Backup
Medical Equipment
High Reliability Systems

Part Models: 2
1ku List Price: Starting From $10.96

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
LTC4110EUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4110EUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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
Battery Charger ICs 1
LTM8062	RECOMMENDED FOR NEW DESIGNS	32V_IN, 2A μModule (Power Module) Power Tracking Battery Charger
Battery Monitors & Fuel Gauges 1
LTC2942-1	Obsolete	1A Battery Gas Gauge with Internal Sense Resistor and Temperature/Voltage Measurement
Protection Switches & Controllers 2
LTC2954	RECOMMENDED FOR NEW DESIGNS	Push Button On/Off Controller with µP Interrupt
LTC4365	RECOMMENDED FOR NEW DESIGNS	Overvoltage, Undervoltage and Reverse Supply Protection Controller

Evaluation Kits

LTC4110EUHF Demo Board | Multi-Chemistry Flyback Battery Backup System Charger/Manager

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Product Details

Demonstration circuit DC1259A is a single-battery battery- backup controller featuring the LTC4110. The LTC4110 controller provides all the features and functions to offer a complete standalone battery-backup system. The LTC4110 is a multi-chemistry flyback battery charger and discharger that is scalable with other LTC4110s to allow a larger battery array for increased capacity and/or redundancy.

The demo board requires a 12V input voltage and is initially configured to charge a 3 Li-Ion Smart Battery at 1A; the charge voltage is 12.6V. However, the Demo board can be easily configured for a standard battery as well. A SMBus interface is offered to allow host communications in control and status and/or support Smart Batteries. However, no host is required to use the LTC4110.