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TD2778

Techcode
Part Number TD2778
Manufacturer Techcode
Description 2.4A 32V Synchronous Rectified Step-Down Converter
Published May 23, 2016
Detailed Description Techcode® DATASHEET 2.4A 32V Synchronous Rectified Step-Down Converter TD2778 General Description Features The TD27...
Datasheet PDF File TD2778 PDF File

TD2778
TD2778

Overview
Techcode® DATASHEET 2.
4A 32V Synchronous Rectified Step-Down Converter TD2778 General Description Features The TD2778 is a monolithic synchronous buck • regulator.
The device integrates two 90mΩ • MOSFETs, and provides 2.
4A of continuous load • current over a wide input voltage of 4.
75V to 32V.
• 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.
• This device, availablein an SOP8-PP package, • provides a very compact solution with minimal external • components.
2.
4A Output Current Wide 4.
75V to 32V Operating Input Range Integrated 90mΩ Power MOSFET Switches Output Adjustable from 0.
923V to 30V Up to 93% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors Fixed 200KHz 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 TD2778 Techcode Semiconductor Limited 1 SOP8 www.
techcodesemi.
com Techcode® DATASHEET 2.
4A 32V Synchronous Rectified Step-Down Converter TD2778 Pin Configurations Pin Description Figure 2 Pin Configuration of TD2778(Top View) Pin Number Pin Name Description 1 BS High-Side Gate Drive Boost Input.
BS supplies the drive for the high-side N-Channel MOSFET switch.
Connect a 0.
01µF or greater capacitor from SW to BS to power the high side switch.
2 IN Power Input.
IN supplies the power to the IC, as well as the step-down converter switches.
Drive IN with a 4.
75V to 32V power source.
Bypass IN to GND with a suitably large capacitor to eliminate noise on the input to the IC.
See Input Capacitor.
3 SW Power Switching Output.
SW is the switching node that supplies power to the output.
Connect the output LC filter from SW t...


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