DC1937B: 10V @ 5.33A, 12V in, Solar Supercapacitor Charger

Summary

Demonstration circuit 1937B is a supercapacitor charger and backup controller with supercapacitor health and system monitoring; featuring the LTC®3350. The LTC3350 has a buck supercapacitor charger, backup boost controller and an input ideal diode to disconnect the input supply in backup mode. An output ideal diode allows the supercapacitors to supply the output when VCAP is above the set backup voltage. As the capacitor stack voltage drops down to the set output voltage, the LTC3350 will operate as a boost regulator to supply the output until the energy in the supercapacitors are depleted.

Specifications

Manufacturer	Analog Devices Inc.
Category	Power Management
Sub-Category	Battery Chargers
Eval Board Part Number	505-DC1937B-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Cell Type	Super-Capacitor
Configuration	4 Supercapacitors
Voltage In	12 V
Voltage Out	10 V
Current Out	5.33 A
Features	Current Limit (Adj. or Fixed) I²C Interface Over Voltage Protection SMBus Interface
Quiescent Current [Typical]	4 mA
Sleep Mode Current [Typical]	- Not Given
Component Count + Extras	51 + 35
Application / Target Market	Memory Back-up Power: Auxiliary Power Supply Servers
Design Author	Linear Technology
Main I.C. Base Part	LTC3350
Quiescent Current [Maximum]	- Not Given
Sleep Mode Current [Maximum]	- Not Given
Date Created By Author	2015-05
Date Added To Library	2016-09