Update: 29 September, 2023
The LT3501 is a dual current mode PWM step-down DC/DC converter with two internal 3.5A switches. It features independent input voltage, feedback, soft-start, and power good pins for each channel, simplifying complex power supply tracking/sequencing requirements. The converters can be synchronized to a common external clock input or a resistor programmable fixed 250kHz to 1.5MHz internal oscillator. The channels maintain a 180° phase relationship at all frequencies, reducing voltage ripple and component size. The programmable frequency allows for optimization between efficiency and external component size. The switch can stay on through multiple clock cycles, only switching off when the boost capacitor needs recharging, resulting in a maximum duty cycle of ~95% and improved minimum input-to-output voltage ratios. Each output can be independently disabled using its own soft-start pin, or the entire part can be placed in low quiescent current shutdown mode using the SHDN pin. The LT3501 is available in a 20-lead TSSOP package with an exposed leadframe for low thermal resistance.
File format: PDF
Size: -
MD5 Checksum: 75CA1F345FA111BD630356157A64290A
Publication date: 08 May, 2012
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PDF Link: LINEAR TECHNOLOGY - LT3501 handbook PDF