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EUP3475A

Eutech Microelectronics
Part Number EUP3475A
Manufacturer Eutech Microelectronics
Description 1MHz Synchronous Step-Down Converter
Published Jul 18, 2014
Detailed Description EUP3475A 3A, 28V, 1MHz Synchronous Step-Down Converter DESCRIPTION The EUP3475A is a 1MHz fixed frequency synchronous c...
Datasheet PDF File EUP3475A PDF File

EUP3475A
EUP3475A

Overview
EUP3475A 3A, 28V, 1MHz Synchronous Step-Down Converter DESCRIPTION The EUP3475A is a 1MHz fixed frequency synchronous current mode buck regulator.
The device integrates both 135mΩ high-side switch and 90mΩ low-side switch that provide 3A of continuous load current over a wide operating input voltage of 4.
5V to 28V.
The internal synchronous power switch increases efficiency and eliminates the need for an external Schottky diode.
Current mode control provides fast transient response and cycle-by-cycle current limit.
At heavy load, the EUP3475A operates at a fixed frequency Pulse-Width Modulation mode for excellent stability and transient response.
At light load, the EUP3475A will operates at a PulseSkipping mode to save power.
The EUP3475A features short circuit and thermal protection circuits to increase system reliability.
Externally programmable soft-start allows for proper power on sequencing with respect to other power supllies and avoids input inrush current during startup.
In shutdown mode, the supply current drops below 1µA.
The EUP3475A is available in SOP-8 package with the exposed pad.
FEATURES Automatic Pulse Skipping Mode at Light Load 3A Continuous Output Current 110ns Minimum On Time Integrated 135mΩ High Side Switch Integrated 90mΩ Low Side Switch Wide 4.
5V to 28V Operating Input Range Output Adjustable from 0.
8V to 24V Up to 95% Efficiency Programmable Soft-Start <1µA Shutdown Current 1MHz Fixed Switching Frequency Thermal Shutdown and Over Current Protection Input Under Voltage Lockout Available in SOP-8 (EP) package RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free APPLICATIONS Distributed Power Systems Networking Systems FPGA, DSP, ASIC Power Supplies Typical Application Circuit DS3475A Ver 1.
3 May 2012 Figure 1.
1 Pin Configurations Package Type SOP-8 (EP) EUP3475A Pin Configurations Pin Description Number 1 Pin Name BS 2 IN 3 4 9 (Exposed Pad) 5 SW GND FB 6 COMP 7 EN 8 SS Description High-Side Gate Drive Boost Input.
BS suppl...


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