DC-DC Switching Buck (Step Down) Regulator, Adjustable, 3.6V-36Vin, 790mV-20Vout, 2Aout, MSOP-10

LT3480EMSE#PBF - DC-DC Switching Buck (Step Down) Regulator, Adjustable, 3.6V-36Vin, 790mV-20Vout, 2Aout, MSOP-10

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Product Overview

The LT3480EMSE#PBF is a 2.4MHz Monolithic Step-down Switching Regulator with 70µA quiescent current that accepts input voltages up to 36V (60V maximum). A high efficiency 0.25R switch is included on the die along with a boost Schottky diode and the necessary oscillator, control and logic circuitry. Current mode topology is used for fast transient response and good loop stability. Low ripple Burst Mode® operation maintains high efficiency at low output currents while keeping output ripple below 15mV in a typical application. In addition, the LT3480 can further enhance low output current efficiency by drawing bias current from the output when VOUT is above 3V. Shutdown reduces input supply current to less than 1µA while a resistor and capacitor on the RUN/SS pin provide a controlled output voltage ramp (soft-start). A power good flag signals when VOUT reaches 86% of the programmed output voltage.
  • Over-voltage lockout protects circuits through 60V transient
  • Low ripple Burst Mode® operation (70µA IQ at 12VIN to 3.3VOUT)
  • <15mV Output ripple
  • 200kHz to 2.4MHz Adjustable switching frequency
  • Low shutdown current (IQ < 1µA)
  • Integrated boost diode
  • Synchronizable between 250kHz to 2MHz
  • Power good flag
  • Saturating switch design (0.25R on-resistance)
  • 0.790V Feedback reference voltage
  • Soft-start capability


Automotive, Portable Devices, Power Management, Industrial

Product Information

Buck (Step Down)
Cut Tape
MSL 1 - Unlimited
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