EML9206 Datasheet | Elite Semiconductor Microelectronics Technology

ESMT/EMP Regulator General Description EML9206 is designed with high efficiency step down DC/DC converter for portable devices applications. It Features with extreme low quiescent current with no load which is the best fit for extending battery life during the standby mode. The device operates from 2.5V to 5.5V input voltage and up to 600m A output current capability. High 1.5MHz internal frequency makes small surface mount inductors and capacitors possible and reduces overall PCB board space. Further, build-in synchronous switch makes external Schottky diode is no longer needed and efficiency is improved. EML9206 is designed base on Pulse Width Modulation (PWM) for low output voltage ripple and fixed frequency noise, while Pulse Frequency Modulation (PFM) is used to improve light load efficiency, and Low Dropout (LDO) Mode provides 100% duty cycle operation. The device is available in fixed output voltages of 1.2V, 1.8V and 3.3V in SOT-23-5 package. 1.5MHz 600m A, Synchronous Step-Down Features - - - - - - - - - - Achieve 95% efficiency Input Voltage : 2.5V to 5.5V Output Current up to 600m A Quiescent Current 35μA with No Load Internal switching frequency 1.5MHz No Schottky Diode needed Low Dropout Operation: 100% Duty Cycle Shutdown current < 1μA Excellent Line and Load Transient Response Over-temperature Protection Applications - - - - - - Typical Application (fixed-3.3V) Blue-Tooth devices Cellular and Smart Phones Personal multi-media Player (PMP) Wireless networking Digital Still Cameras Portable applications 。 。 Vin 3.3 - 5.5V 2.2 u H 1 VIN SW 5 Vout 3.3V Cin 4.7 u F CER 。 VOUT 4 3 EN 2 GND Cout 10u F CER Fig. 1 Fig. 2 Elite Semiconductor Memory Technology Inc./Elite Micro Power Inc. Publication Date : Jan. 2011 Revision : 2.2...