Linear Technology LTC3355 Backup Regulator Datasheet

The LTC

Brand: Linear Technology
Category: Backup Regulator
Document type: Datasheet
Language: English
Pages: 21
File format: PDF
File size: 335 KB
Published: 04 July, 2014
Updated: 25 September, 2023
MD5 checksum: 5AA3D3E2E9207B98574436D764F096C0
PDF: Linear Technology LTC3355 Backup Regulator Datasheet PDF

About this manual

The LTC3355 is designed as a complete input power interrupt ride-through DC/DC system. It charges a supercapacitor while delivering load current to the output, and uses energy from the supercapacitor to provide continuous backup power when the main input voltage is lost.

The device contains a nonsynchronous constant frequency current mode monolithic 1A buck switching regulator for the primary supply, operating with an input up to 20V. It also features a 5A boost backup regulator powered by the supercapacitor, capable of operating down to 0.5V input to maximize energy utilization.

What's inside

Features
Applications
Description
Typical Application
Absolute Maximum Ratings
Order Information
Electrical Characteristics

Specifications

Vin Voltage Range	3V to 20V
Vout Voltage Range	2.7V to 5V
Main Regulator Type	1A Current Mode Buck
Backup Regulator Type	5A Boost Backup Regulator
Package Type	20-Lead 4mm x 4mm QFN

Frequently asked questions

What is the maximum current the LTC3355 can deliver to the output?

The boost backup regulator can deliver a peak current of 5.5 A.

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