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

LTC3355EUF#PBF - DC-DC Switching Buck (Step Down) Regulator, Adjustable, 3V-20Vin, 2.7V-5Vout, 1Aout, QFN-20

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Product Overview

The LTC3355EUF#PBF is a complete input power interrupt ride-through DC-to-DC System for use with solid state drives. The part charges a super capacitor while delivering load current to VOUT and uses energy from the supercapacitor to provide continuous VOUT backup power when VIN power is lost. The LTC3355 contains a non-synchronous constant frequency current mode monolithic 1A buck switching regulator to provide a 2.7 to 5V regulated output voltage from an input supply of up to 20V. A 1A programmable CC/CV linear charger charges the supercapacitor from VOUT. When the VIN supply drops below the PFI threshold, the devices's constant frequency non-synchronous current mode 5A boost switching regulator delivers power from the supercapacitor to VOUT. A thermal regulation loop maximizes charge current while limiting the die temperature to 110°C. The IC has boost, charger and VIN programmable current limits.
  • Boost regulator operates down to 0.5V for maximum utilization of supercapacitor energy
  • Programmable supercapacitor charge current to 1A with overvoltage protection
  • Charger supports single cell CC/CV battery charging
  • Programmable VIN current limit
  • Programmable boost current limit
  • VIN power fail indicator
  • VCAP power good indicator
  • VOUT power on reset output


Metering, Safety, Power Management

Product Information

Buck (Step Down)
Cut Tape
MSL 1 - Unlimited
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135 in stock for next day delivery (UK stock)

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