ANALOG DEVICES LT8333RDD#TRPBF DC-DC Switching Boost, Inverting, SEPIC Regulator, Adjustable, 2.8V to 40V in, 40V out, DFN-EP-10

LT8333RDD#TRPBF is a current mode DC/DC converter with a 40V, 3A switch operating from a 2.8V to 40V input. With a unique single feedback pin architecture, it is capable of boost, SEPIC or inverting configurations. Burst Mode operation consumes as low as 9?A quiescent current to maintain high efficiency at very low output currents, while keeping typical output ripple below 15mV. An external compensation pin allows optimization of loop bandwidth over a wide range of input and output voltages and programmable switching frequencies between 300KHz and 2MHz. A SYNC/MODE pin allows synchronization to an external clock. It can also be used to select between BURST or PULSE SKIP modes of operation with spread spectrum frequency modulation for low EMI. For increased efficiency, a BIAS pin can accept a second input to supply the INTVCC regulator. Applications include industrial and automotive, telecom, medical diagnostic equipment, portable electronics.

• Wide input voltage range from 2.8V to 40V, ultralow quiescent current and low ripple
• Positive or negative output voltage programming with a single feedback pin
• Synchronizable to an external clock, spread spectrum frequency modulation for low EMI
• Bias pin for higher efficiency, programmable undervoltage lockout (UVLO)
• Overcurrent and overtemperature protection, 4.4V typ BIAS threshold (rising, BIAS can supply INTVCC)
• IN quiescent current (active mode, not switching) is 1200?A typ at (SYNC = 0V or INTVCC, BIAS = 0V)
• Switching frequency is 300KHz typical at (RT = 165K)
• Minimum on-time is 70ns typical at (BURST mode, VIN = 12V)
• Switch leakage current is 1µA maximum at (VSW = 40V, TA = 25°C)
• Operating junction temperature range from -40°C to 150°C, 10-lead plastic DFN package

Notes

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