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发布者:微桥 发布时间:2011/6/30 阅读:5765次    关键字: EMQ9920
EMQ9920-2 Channel Power Management IC


EMQ9920-2 Channel Power Management IC DataSheet 

GENERAL DESCRIPTION
   The EMQ9920 is a high efficiency, 2-channel power management IC for battery-powered, portable devices application. It integrates two high efficiency step-down DC/DC converters. The two Synchronous Buck converters (CH3, CH4) operate from 2.5V to 5.5V input voltage, up to 600mA loading capability and regulate adjustable output voltage from 0.6V to 5.5V. It features low quiescent current, 1.5MHz internal frequency operation. The EMQ9920 is available in TQFN16 3x3 package. It is Green compliant (RoHS and Halogen-free).

FEATURES
.Two Synchronous Buck Converters
.Achieve 95% efficiency
.Input Voltage : 2.5V to 5.5V
.Output Current up to 600mA
.Reference voltage 0.6V
.Quiescent Current 200μA 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
.Blue-Tooth devices
.Cellular and Smart Phones
.Personal multi-media Player (PMP)
.Wireless networking
.Digital Still Cameras
.Portable applications

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