UD24121 datasheet pdf

UNISONIC TECHNOLOGIES CO., LTD UD24121 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 5 Copyright © 2022 Unisonic Technologies Co., Ltd QW-R115-011.E 1.2A, 24V, 1.4MHz STEP-DOWN CONVERTER  DESCRIPTION The UTC UD24121 is a monolithic step-down switching mode converter with a built-in power MOSFET. It regulates input voltages from 4.5V to 24V down to an output voltage as low as 0.81V, and supplies up to 1.2A of load current. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. The UTC UD24121 requires a minimum number of readily available standard external components.

Features

• * 1.2A Peak Output Current
• * 0.35Ω Internal Power MOSFET Switch
• * Stable with Low ESR Output Ceramic Capacitors
• * Up to 92% Efficiency
• * 0.1μA Shutdown Mode
• * Fixed 1.4MHz Frequency
• * Thermal Shutdown
• * Cycle-by-Cycle Over Current Protection
• * Wide 4.5V to 24V Operating Input Range
• * Output Adjustable from 0.81V to 15V