LT8494IFE#PBF

LT8494 is an adjustable frequency (250KHz to 1.5MHz) monolithic switching regulator. Quiescent current can be less than 7µA when operating and is 0.3µA when SWEN is low. It can be configured as either a SEPIC, boost or flyback converter. The low ripple Burst Mode operation maintains high efficiency at low output current while keeping output ripple below 10mV. Dual supply pins (VIN and BIAS) allow the part to automatically operate from the most efficient supply. Input supply voltage can be upto 60V for SEPIC topologies and upto 32V (with ride-through upto 60V) for boost and flyback topologies. After start-up, battery life is extended since the part can draw current from its output (BIAS) even when VIN voltage drops below 2.5V. It is used in applications such as automotive ECU power, power for portable products, industrial supplies etc.

• Output ripple is 10mV typical
• Improves efficiency, reduces minimum supply voltage to 1V after
• Start-up to extend battery life
• Wide input voltage range from 1V to 60V (2.5V to 32V for start-up)
• PG functional for input supply down to 1.3V
• Fixed frequency PWM, SEPIC/BOOST/FLYBACK topologies
• UVLO programmable on SWEN pin, soft-start programmable with one capacitor
• Switching frequency is 1MHz typical at (RT = 68.1K, TA = 25°C)
• Operating temperature range from -40°C to 125°C
• Package style is 20-lead plastic TSSOP

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