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EML3418 Schematic ( PDF Datasheet ) - Elite Semiconductor

Teilenummer EML3418
Beschreibung Synchronous Step-Down Regulator
Hersteller Elite Semiconductor
Logo Elite Semiconductor Logo 




Gesamt 17 Seiten
EML3418 Datasheet, Funktion
ESMT/EMP
EML3418
1.3MHz 2A, Synchronous Step-Down Regulator
General Description
EML3418 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 2.0A output current
capability. High 1.3MHz 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.
EML3418 is designed base on pulse width
modulation (PWM) for low output voltage ripple
and fixed frequency noise, low dropout mode
provides 100% duty cycle operation. Low
reference voltage is designed for achieving
regulated output down to 0.6V.
The device is available in an adjustable version
for TDFN-8 and SOP-8FD package.
Features
„ Achieve 95% efficiency
„ Input Voltage : 2.5V to 5.5V
„ Output Current up to 2A
„ Reference voltage 0.6V
„ Quiescent Current 240μA with No
Switching
„ Internal switching frequency 1.3MHz
„ No Schottky Diode needed
„ Low Dropout Operation: 100% Duty Cycle
„ Shutdown current < 1μA
„ Excellent Line and Load Transient
Response
„ Over-current and Over-temperature
Protection
Applications
„ Blue-Tooth devices
„ Cellular and Smart Phones
„ Personal multi-media Player (PMP)
„ Wireless networking
„ Digital Still Cameras
„ Portable applications
Typical Application (adjustable)
Fig. 1
Fig. 2
Elite Semiconductor Memory Technology Inc./Elite Micropower Inc.
Publication Date: Jan. 2011
Revision: 2.3
1/17






EML3418 Datasheet, Funktion
ESMT/EMP
Typical Performance Characteristics
Efficiency vs Output Current
EML3418
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
Reference voltage vs Temperature
Output Voltage vs Load Current
Elite Semiconductor Memory Technology Inc./Elite Micropower Inc.
Publication Date: Jan. 2011
Revision: 2.3
6/17

6 Page









EML3418 pdf, datenblatt
ESMT/EMP
Application (Continued)
Typical schematic for PCB layout
EML3418
Elite Semiconductor Memory Technology Inc./Elite Micropower Inc.
Publication Date: Jan. 2011
Revision: 2.3
12/17

12 Page





SeitenGesamt 17 Seiten
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