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LTC3305

Linear
Part Number LTC3305
Manufacturer Linear
Description Lead-Acid Battery Balancer
Published Nov 20, 2019
Detailed Description LTC3305 Lead-Acid Battery Balancer FEATURES n Single IC Balances Up to Four 12V Lead-Acid Batteries in Series n All N...
Datasheet PDF File LTC3305 PDF File

LTC3305
LTC3305

Overview
LTC3305 Lead-Acid Battery Balancer FEATURES n Single IC Balances Up to Four 12V Lead-Acid Batteries in Series n All NFET Design n Stackable to Balance Larger Series Battery Packs n Standalone Balancing Operation: Requires No External μP or Additional Control Circuitry n Balancing Current Limited by External PTC Thermistor n Continuous Mode and Timer Mode n Programmable UV and OV Fault Thresholds n Programmable Termination Time and Termination Voltage n Thermally Enhanced 38-Lead TSSOP Package APPLICATIONS n Telecom Backup Systems n Home Battery Powered Backup Systems n Industrial Electric Vehicles n Energy Storage Systems (ESS) n Medical Equipment DESCRIPTION The LTC®3305 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.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION 4-Battery Balancer with Programmed High and Low Battery Voltage Faults 10µF 25V VREG CM CP EN1 EN2 1µF MODE BOOST 6V TERM1 TERM2 V4 100k EACH 10nF UVFLT OVFLT DONE BAL PTCFLT BATX BATY CTON LTC3305 V3 V2 CTOFF 100nF V1 CTBAT 10nF ...


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