Overview
Features and Benefits
- Single IC Balances Up to Four 12V Lead-Acid Batteries in Series
- All NFET Design
- Stackable to Balance Larger Series Battery Packs
- Standalone Balancing Operation:
- Requires No External μP or Additional Control Circuitry
- Balancing Current Limited by External PTC Thermistor
- Continuous Mode and Timer Mode
- Programmable UV and OV Fault Thresholds
- Programmable Termination Time and Termination Voltage
- Thermally Enhanced 38-Lead TSSOP Package
- Click here to read "Life Extension Through Charge Equalization of Lead-Acid Batteries" on IEEE Xplore
Product Details
The LTC3305 balances up to 4 lead-acid batteries connected in series. It is intended to be used in conjunction with a separate pre-existing battery charger as part of a high performance battery system. All voltage monitoring, gate drive, and fault detection circuitry is integrated.
The LTC3305 employs an auxiliary battery or an alternative storage cell to transfer charge to or from each individual battery in the stack. A mode pin provides two operating modes, timer mode and continuous mode. In timer mode, once the balancing operation is completed, the LTC3305 goes into a low power state for a programmed time and then periodically rebalances the batteries. In continuous mode, the balancing operation continues even after the batteries are balanced to their programmed termination voltage.
The LTC3305 is available in a thermally enhanced 38-lead TSSOP package.
Applications
- Telecom Backup Systems
- Home Battery Powered Backup Systems
- Industrial Electric Vehicles
- Energy Storage Systems (ESS)
- Medical Equipment
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation
Data Sheets (1)
Reliability Data (1)
Evaluation Kit Manuals (1)
Reference Materials
Lead Acid Battery Balancer
LTC3305 Video Product Brief
Press Releases (1)
Technical Articles (1)
Design Resources
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.
Support & Discussions
LTC3305 Discussions
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
