ECT3409

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 Compensati...