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LT3510 Monolithic Dual Tracking 2A Step-Down Switching Regulator ...
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LT3510 Monolithic Dual Tracking 2A Step-Down Switching Regulator DESCRIPTION
The LT®3510 is a dual current mode PWM step-down DC/DC converter with two internal 2.5A switches. Independent input
voltage, feedback, soft-start and power good pins for each channel simplify complex power supply tracking/sequencing requirements. Both converters are synchronized to either a common external clock input or a resistor programmable fixed 250kHz to 1.5MHz internal oscillator. At all frequencies, a 180° phase relationship between channels is maintained, reducing
voltage ripple and component size. Programmable frequency allows for optimization between efficiency and external component size. Minimum input-to-output
voltage ratios are improved by allowing the switch to stay on through multiple clock cycles, only switching off when the boost capacitor needs recharging, resulting in ~95% maximum duty cycle. Each output can be independently disabled using its own soft-start pin, or by using the SHDN pin the entire part can be placed in a low quiescent current shutdown mode. The LT3510 is available in a 20-lead TSSOP package with exposed leadframe for low thermal resistance.
Wide Input Range: 3.1V to 25V Two Switching Regulators with 2A Output Capability Independent Supply to Each Regulator Adjustable/Synchronizable Fixed Frequency Operation from 250kHz to 1.5MHz Antiphase Switching Outputs Can be Paralleled Independent, Sequential, Ratiometri...