DC1229B-A: 1 Cell, 4.2V, 2A Max, Li-Ion Battery Charger

Summary

DC1229B-A is a 2A monolithic Li-Ion battery charger featuring the LT3650EDD-4.2. The LT3650 is a complete mid-power Li-Ion battery charger that can operate over a wide 4.75V to 32V input voltage range. The DC1229B has an input voltage range of 7.5V to 32V. The circuit provides CC/CV charging with a maximum charge current externally programmable up to 2A. A precondition feature trickle charges a low-voltage battery and bad battery detection provides a signal if the battery doesn't respond to preconditioning.

LT3650 is a complete monolithic mid-power Li-Ion battery charger, addressing high input voltage applications with solutions that require a minimum of external components. The IC uses a 1MHz constant frequency, average-current mode step-down architecture. Internal reverse voltage protection allows direct connection to the input supply without a blocking diode for single-cell applications.

Specifications

Manufacturer	Analog Devices Inc.
Category	Power Management
Sub-Category	Battery Chargers
Eval Board Part Number	DC1229B-A-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Cell Type	Lithium Ion, Li-Ion
Configuration	1 Cell (Li-Ion)
Voltage In	7.5 ~ 32 V
Voltage Out	3.7 ~ 4.24 V
Current Out	2 A (1 Li-Ion)
Features	Auto Off Auto Re-Charge Bad Battery Detection Cell Preconditioning Current Limit (Adj. or Fixed) End of Charge Detection Shutdown, Enable, Standby Soft Start
Quiescent Current [Typical]	2.5 mA
Sleep Mode Current [Typical]	15 µA
Component Count + Extras	16 + 29
Application / Target Market	Automotive Battery Chargers Portable Devices Power Tools
Design Author	Linear Technology
Main I.C. Base Part	LT3650
Quiescent Current [Maximum]	3.5 mA
Sleep Mode Current [Maximum]	- Not Given
Date Created By Author	2009-06
Date Added To Library	2019-01