DC2043B: 4 in Series Lead Acid Balancer, 4 ~ 16V in

Summary

Demonstration circuit 2043B is a lead-acid battery balancer featuring the LTC®3305. The LTC3305 balances up to four lead-acid batteries connected in series and incorporates all voltage monitoring, gate drive and fault detection circuitry.

The LTC3305 employs an auxiliary battery or an alternative storage means to transfer charge to or from each individual battery within the stack. There are two operating modes, TIMER mode and CONTINUOUS mode, selected by the MODE pin. In TIMER mode, once the balancing operation is complete, the LTC3305 goes to 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 LTC3305EFE is available in a 7mm × 7mm 38-lead TSSOP surface mount package with exposed pad.

Specifications

Manufacturer	Analog Devices Inc.
Category	Power Management
Sub-Category	Battery Chargers
Eval Board Part Number	DC2043B-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Cell Type	Lead Acid
Configuration	4 in Series
Voltage In	4 ~ 16 V
Voltage Out	2.4 ~ 2.6 V (Reg Out)
Current Out	3 mA
Features	Cell Balancing Over Voltage Protection Under Voltage Protection, Brown-Out
Quiescent Current [Typical]	100 µA
Sleep Mode Current [Typical]	33 µA
Component Count + Extras	128 + 48
Application / Target Market	Automotive Energy Harvesting Medical Power: Auxiliary Power Supply Telecom
Design Author	Analog Devices
Main I.C. Base Part	LTC3305
Quiescent Current [Maximum]	150 µA
Sleep Mode Current [Maximum]	50 µA
Date Created By Author	2016-11
Date Added To Library	2017-10