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

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.

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2406681
LTC3355EUF#PBF

LTC3355EUF#PBF

LINEAR TECHNOLOGY

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

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; Output Current:1A; Output Voltage Min:2.7V; Output Voltage Max:5V; Switching Frequency:1MHz; Topology:Buck (Step

179

Price for: Each 1

1+ £5.06 10+ £3.38 100+ £2.85

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  • 15 in stock for next day delivery (Liege stock)
  • 164 in stock for next day delivery (UK stock)

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    Supplier lead time 6 weeks
2406682
LTC3355IUF#PBF

LTC3355IUF#PBF

LINEAR TECHNOLOGY

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

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; Output Current:1A; Output Voltage Min:2.7V; Output Voltage Max:5V; Switching Frequency:1MHz; Topology:Buck (Step

53

Price for: Each 1

1+ £5.61 10+ £3.74 100+ £3.16

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  • 53 in stock for next day delivery (UK stock)

see cut-off times

 
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    Supplier lead time 6 weeks
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