TD1484B

Techcode® DATASHEET 3A 23V Synchronous Rectified Step-Down Converter TD1484B General Description Features The TD1484B is a monolithic synchronous buck regulator. The device integrates two 90mΩ MOSFETs, and provides 3A of continuous load current over a wide input voltage of 4.75V to 23V. Current mode control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 1µA. The TD1484B regulates the output voltage in automatic PSM/PWM mode operation, depending on the outputcurrent, for high efficiency operation over light to full load current. This device, available in an SOP8-PP package, provides a very compact solution with minimal external components. 3A Output Current Wide 4.75V to 23V Operating Input Range Integrated 90mΩ Power MOSFET Switches Output Adjustable from 0.923V to 20V Up to 93% Efficiency Pulse Save Mode(PSM)/PWM Mode Operation Programmable Soft-Start Stable with Low ESR CeramicOutputCapacitors Fixed 340KHz Frequency Cycle-by-Cycle Over Current Protection Input Under Voltage Lockout Applications Distributed Power Systems Networking Systems FPGA, DSP, ASIC Power Supplies Green Electronics/ Appliances Notebook Computers Package Types October, 20, 2010. Figure 1. Package Types of TD1484B Techcode Semiconductor Limited 1 SOP8 www.techcodesemi.com Techcode® DATASHEET 3A 23V Synchronous Rectified Step-Down...