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Teilenummer | EML3418 |
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Beschreibung | Synchronous Step-Down Regulator | |
Hersteller | Elite Semiconductor | |
Logo | ||
Gesamt 17 Seiten 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
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 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 | ||
Seiten | Gesamt 17 Seiten | |
PDF Download | [ EML3418 Schematic.PDF ] |
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