LT3480IMSE#PBF

LT3480 is an adjustable frequency (200KHz to 2.4MHz) monolithic buck switching regulator that accepts input voltages up to 36V (60V maximum). A high efficiency 0.25 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.

• Operation from 3.6V to 36V
• Over-voltage lockout protects circuits through 60V transients
• 2A maximum output current
• Low ripple burst Mode® operation
• Low shutdown current: IQ <lt/> 1µA
• Integrated boost diode, soft-start capability
• Synchronizable between 250KHz to 2MHz
• Saturating switch design: 0.25ohm on-resistance
• 0.790V feedback reference voltage
• Available in 10-lead MSOP package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party