LT8612EUDE#PBF

LT®8612 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 3µA of quiescent current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple burst mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN undervoltage lockout or to shut down this reducing the input supply current to 1µA. The PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions. Typical applications are industrial supplies, general purpose step-down, GSM power supplies.

• Capacitor on the TR/SS pin programs the output voltage ramp rate during start-up
• Ultralow quiescent current Burst Mode® operation, allows use of small inductors
• Safely tolerates inductor saturation in overload conditions
• Current mode operation, accurate 1V enable pin threshold
• Internal compensation, output soft-start and tracking
• Minimum input voltage is 3.4V maximum (TA=25°C)
• VIN quiescent current is 5µA maximum (VEN/UV=0V, VSYNC=0V)
• Oscillator frequency range from 180 to 240KHz (RT=221K, ILOAD=1.5A, TA=25°C)
• 28-lead plastic QFN package
• Temperature rating range from -40°C to 125°C

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