DC1583A-B: 1A, 2-Cell, 4.5V Max, Supercapacitor Charger

Summary

DC1583A-B is a 1A high efficiency 2-Cell supercapacitor charger with automatic cell balancing featuring the LTC3625-1. The LTC3625-1 are programmable supercapacitor chargers designed to charge two supercapacitors in series to a fixed voltage of 4.5V or 4.0V from a 2.7V to 5.5V input supply. Automatic cell balancing is achieved during the charging phase, preventing overvoltage damage to either supercapacitor while maximizing charge rate.

High efficiency, high charging current, low quiescent current and low minimum external parts count make the LTC3625-1 ideally suited for small form factor backup or high peak power systems.

Charging current/maximum input current level is programmed with an external resistor. When the input supply is removed and/or the EN pin is low, the LTC3625-1 automatically enters a low current state, drawing less than 1μA from the supercapacitors.

Specifications

Manufacturer	Analog Devices Inc.
Category	Power Management
Sub-Category	Capacitor Chargers
Eval Board Part Number	DC1583A-B-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Capacitor Type	Super Capacitor
Function	Charger Controller
Number of Capacitors	2
Voltage In	2.7 ~ 5.5 V
Voltage Out (Max)	4.5 V
Charge Current (Max)	1 A
Topology	Buck-Boost
Features	Adjustable Output Current Adjustable Output Voltage Automatic Cell Balancing Power Fail Indicator Power Good Indicator Shutdown, Enable, Standby Undervoltage Protection
Quiescent Current	365 µA
Component Count + Extras	15 + 22
Main I.C. Base Part	LTC3625-1
Design Author	Linear Technology
Date Created By Author	2010-08
Date Added To Library	2019-05