LT3462AEDC#TRMPBF

LT3462AEDC#TRMPBF is a general-purpose fixed frequency current mode inverting DC/DC converter. It features an integrated Schottky and a low VCESAT switch allowing a small converter footprint and lower parts cost. The LT3462A switches at 2.7MHz. These high speeds enable the use of tiny, low cost and low-height capacitors and inductors. It operates in a dual inductor inverting topology that filters both the input and output currents. Very low output voltage ripple approaching 1mVP‑P can be achieved when ceramic capacitors are used. Fixed frequency switching ensures a clean output free from low-frequency noise typically present with charge pump solutions. The 40V switch allows a VIN to VOUT differential of up to 38V for dual inductor topologies. Applications include CCD bias, LCD bias, GaAs FET bias, general purpose negative voltage supply.

• Integrated Schottky rectifier, low input bias current GND based FB input
• Wide input voltage range from 2.5V to 16V, uses tiny surface mount components
• Supply current is 2.9mA typical at (FB = -0.05V, not switching, TA = 25°C)
• Switching frequency is 2.7MHz typical
• Switch current limit is 420mA typical at (TA = 25°C)
• Switch VCESAT is 270mA typical at (TA = 25°C)
• Switch leakage current is 1µA maximum at (VSW = 5V, TA = 25°C)
• Error amp offset voltage is 12V maximum at (TA = 25°C)
• Operating ambient temperature range from -40°C to 85°C
• 8-lead plastic DFN package

注释

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