2014/10/30
 
 
 
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LTC

LTC3355 - Buck DC/DC with integrated supercapacitor charger and backup regulator

Linear Technology Corporation introduces the LTC3355, a complete ride-through DC/DC system IC with a built-in boost converter.

  • VIN Voltage Range: 3V to 20V
  • VOUT Voltage Range: 2.7V to 5V
  • 1A Current Mode Buck Main Regulator
  • 5A Boost Backup Regulator Powered from Single Supercapacitor
  • Boost Regulator Operates Down to 0.5V
LTC3355-buck regulator with boost converter

Product Description

Linear Technology Corporation introduces the LTC3355, a complete ride-through DC/DC system IC.
The LTC3355 features a main buck regulator with a built-in boost converter for temporary backup, or ride-through, of VOUT during a sudden loss of VIN power from a single supercapacitor energy source.

The device includes all functions necessary to provide seamless charging of a supercapacitor (or other storage element), including the monitoring of VIN, VOUT and VCAP and automatic switchover to backup power.

The LTC3355’s nonsynchronous constant frequency current mode monolithic 1A buck switching regulator provides a 2.7V to 5V regulated output voltage from an input supply up to 20V.

The device is ideal for ride-through, “dying gasp” or data backup supplies commonly used in power meters, industrial alarms and solid state drives.

Typical applications

Ride-through “dying gasp” supplies, power meters, industrial alarms, solid state drives.

Boost Regulator

Operates Down to 0.5V for maximum utilisation of supercapacitor energy.

Supercapacitor

Programmable Charge Current to 1A with Overvoltage Protection.

Product Series

2 products found

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Description Tech
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2406681

LINEAR TECHNOLOGY
LTC3355EUF#PBF

DC-DC CONV, ADJ, 1MHZ, QFN-20

Input Voltage Min:3V; Input Voltage Max:20V; No. of Outputs:1; DC / DC Converter IC Case:QFN; No. of Pins:20;

Technical Data Sheet (370.21KB) EN
Product Range
RoHS Certificate of Compliance
RoHS Compliant Yes
164 in stock
cut-off times
164 UK Stock: Order before 20:00 (for re-reeled items 16:30) Mon-Fri (excluding National Holidays)
1 Each
1+
£5.06
10+
£3.38
100+
£2.85
164 in stock for next working day delivery (UK stock)
cut-off times
164 UK Stock: Order before 20:00 (for re-reeled items 16:30) Mon-Fri (excluding National Holidays)


2406682

LINEAR TECHNOLOGY
LTC3355IUF#PBF

DC-DC CONV, ADJ, 1MHZ, QFN-20

Input Voltage Min:3V; Input Voltage Max:20V; No. of Outputs:1; DC / DC Converter IC Case:QFN; No. of Pins:20;

Technical Data Sheet (370.21KB) EN
Product Range
RoHS Certificate of Compliance
RoHS Compliant Yes
53 in stock
cut-off times
53 UK Stock: Order before 20:00 (for re-reeled items 16:30) Mon-Fri (excluding National Holidays)
1 Each
1+
£5.61
10+
£3.74
100+
£3.16
53 in stock for next working day delivery (UK stock)
cut-off times
53 UK Stock: Order before 20:00 (for re-reeled items 16:30) Mon-Fri (excluding National Holidays)
You have not selected any items to compare. Please select at least two items and click the compare button.
 
 
   

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