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.

Product Range
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  Manufacturer Part No Order Code Manufacturer / Description
Avail Price For
Price
Quantity
LTC3355EUF#PBF
LTC3355EUF#PBF - DC-DC Switching Buck (Step Down) Regulator, Adjustable, 3V-20Vin, 2.7V-5Vout, 1Aout, QFN-20

2406681

LINEAR TECHNOLOGY - DC-DC Switching Buck (Step Down) Regulator, Adjustable, 3V-20Vin, 2.7V-5Vout, 1Aout, QFN-20

DC-DC CONV, ADJ, 1MHZ, QFN-20; Topology:Buck (Step Down); Input Voltage Min:3V; Input Voltage Max:20V; No. of Outputs:1Outputs; DC / DC Converter IC Case:QFN; No. of Pins:20Pins; Output Current:1A; Output Voltage Min:2.7V; Output Voltage Max:5V; Switchin

514 in stock

+ Check Stock & Lead Times

9 Liege Stock: Order before 20:00(mainland UK) & 18.00(NI) (for re-reeled items 16:30 – mainland UK & NI) Mon-Fri (excluding National Holidays)

505 UK Stock: Order before 20:00(mainland UK) & 18.00(NI) (for re-reeled items 16:30 – mainland UK & NI) Mon-Fri (excluding National Holidays)

More stock available week commencing 25/12/17

Each

1+ £5.77 25+ £3.35 100+ £3.06

Add
Min: 1 Mult: 1
LTC3355IUF#PBF
LTC3355IUF#PBF - DC-DC Switching Buck (Step Down) Regulator, Adjustable, 3V-20Vin, 2.7V-5Vout, 1Aout, QFN-20

2406682

LINEAR TECHNOLOGY - DC-DC Switching Buck (Step Down) Regulator, Adjustable, 3V-20Vin, 2.7V-5Vout, 1Aout, QFN-20

DC-DC CONV, ADJ, 1MHZ, QFN-20; Topology:Buck (Step Down); Input Voltage Min:3V; Input Voltage Max:20V; No. of Outputs:1Outputs; DC / DC Converter IC Case:QFN; No. of Pins:20Pins; Output Current:1A; Output Voltage Min:2.7V; Output Voltage Max:5V; Switchin

106 in stock

+ Check Stock & Lead Times

106 UK Stock: Order before 20:00(mainland UK) & 18.00(NI) (for re-reeled items 16:30 – mainland UK & NI) Mon-Fri (excluding National Holidays)

More stock available week commencing 25/12/17

Each

1+ £6.37 25+ £3.91 100+ £3.56

Add
Min: 1 Mult: 1