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ECT3409

E-CMOS
Part Number ECT3409
Manufacturer E-CMOS
Description 1.5MHz Step-Down Converter
Published Jun 4, 2014
Detailed Description ECT3409 Dual Channel 600mA, 1.5MHz Step-Down Converter Description The ECT 3409 is a dual channel cur- rent mode PWM DC-...
Datasheet PDF File ECT3409 PDF File

ECT3409
ECT3409

Overview
ECT3409 Dual Channel 600mA, 1.
5MHz Step-Down Converter Description The ECT 3409 is a dual channel cur- rent mode PWM DC-DC step -down conv erter o perating at 1.
5 MHz constant fre quency.
The device is i deal for p ortable equipment requiring two sep arate po wer su pplies that need high current up to 600mA.
The device operates from single-cell Lit hium-ion batt eries whil e st ill achieving over 96% efficiency.
The ECT3409 al so can run at 100% duty cycle fo r low dropo ut ope ration, exten ding battery l ife in portable systems while light load o peration provides very low output ripple for noise sensitive applications.
The device h as a uniq ue adaptive slo pe comp ensation scheme th at make s it po ssible to o perate with a lo wer range of ind uctor valu es to optimize size an d provide efficient ope ration.
Th e 1.
5MHz swit ching freq uency minimizes the size of external comp onents while keeping switching losse s low.
The ECT340 9 ca n operate fro m a 2.
5V to 5.
5V input voltage and can sup ply up to 600mA output current for each channel.
The ECT3409 is availabl e in a Pb-free 3x3mm TDFN-10 package an d operate s over the -40°C to +85° C temperature range.
Features z z z z z z z z z z z z z VIN Range: 2.
5V to 5.
5V Up to 600mA Output Current High Efficiency: Up to 96% 1.
5MHz Constant Frequency Operation 100% Duty Cycle Dropout Operation Low RDS (ON) Internal Switches: 0.
35Ω Current Mode Operatio n for Excellent Line and Load Transient Response Adaptive Slope Compensation Soft Start Short-Circuit and Thermal Fault Protection <1µA Shutdown Current Power-On Reset Output Available is the Lead Free package Applications z z z z z Cellular Telephones Digital Still Cameras PDAs Portable Media Players Wireless and DSL Block Diagram E-CMOS Corp.
(www.
ecmos.
com.
tw) Page 1 of 16 2007/1 1/21 http://www.
Datasheet4U.
com ECT3409 Dual Channel 600mA, 1.
5MHz Step-Down Converter Pin Assignment TDFN-10 (Top View) Pin Descriptions Pin# Symbol 1 FB1 Function Feedback inpu...


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