ANALOG DEVICES LT8609AHDDM-5#TRPBF DC-DC Switching Synchronous Buck Regulator, Fixed, 2.7 to 42V in, 5V / 3A Out, WFDFN-EP-10

LT8609AHDDM-5#TRPBF is a compact, high-efficiency, high-speed synchronous monolithic step-down switching regulator that consumes only 1.7µA of non-switching quiescent current. The LT8609A can deliver 3A of continuous current. Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mV peak-to-peak. A SYNC pin allows synchronization to an external clock or spread spectrum modulation for low EMI operation. 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 UVLO or to shut down the part. The LT8609A has slower switch edges for lower EMI emissions. Applications include GSM transceivers, general-purpose step-down, and low EMI step-down.

• Input voltage range from 3.0V to 42V, spread spectrum frequency modulation for low EMI
• Peak current mode operation, accurate 1V enable pin threshold
• Internal compensation, output soft-start and tracking
• VIN quiescent current is 1µA typical at (VEN/UV = 0V, VSYNC = 0V, TA = 25°C)
• Oscillator frequency is 200KHz typical at (RT = 221k, ILOAD = 0.5A, TA = 25°C)
• Spread spectrum modulation frequency is 3KHz typ at (VSYNC = 3.3V, TA = 25°C)
• VIN current in regulation is 46?A typical at (VIN = 6V, VOUT = 2.7V, output load = 100?A)
• Minimum on-time is 45ns typical at (ILOAD = 1.5A, SYNC = 0V, TA = 25°C)
• Pulse skipping and burst mode operation, medium switch edge speed
• Operating temperature range from -40°C to 150°C, 10-lead plastic side wettable DFN package

Notes

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