LT8612IUDE#PBF

LT8612 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 the device reducing the input supply current to 1µA. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up. It is used in applications such as automotive and industrial supplies, general purpose step-down, GSM power supplies etc.

• Wide input voltage range from 3.4V to 42V
• Fast minimum switch-On-time is 40ns typical at (ILOAD = 2A, SYNC = 0V)
• Low dropout under all condition is 250mV at 3A
• 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
• Oscillator frequency is 210KHz typical at (RT = 221K, ILOAD = 1.5A, TA = 25°C)
• VIN quiescent current is 1µA typical at (VEN/UV = 0V, VSYNC = 0V, TA = 25°C)
• Operating temperature range from -40°C to 125°C
• Package style is 28-lead plastic QFN

Notes

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