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Elite Semiconductor

EML3408 Datasheet Preview

EML3408 Datasheet

Synchronous Step-Down Regulator

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ESMT/EMP
EML3408
1.5MHz 800mA, Synchronous Step-Down Regulator
General Description
EML3408 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 800mA 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. EML3408 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 and
fixed output voltages of 1.2V, 1.5V, 1.8V and 3.3V.
The EML3408 is available in SOT-23-5 package.
Features
„ Achieve 95% efficiency
„ Input Voltage : 2.5V to 5.5V
„ Output Current up to 800mA
„ 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
Typical Application
Vin
3.3 – 5.5V
Cin
4.7 uF
CER
EN
4 VIN SW 3
1 EN VFB 5
2 GND
2.2 uH
22 pF
Vout 2.7V
Cout
10uF
CER
R2 (350KΩ)
R1 (100KΩ)
FIG.1
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: May 2011
Revision: 1.3
1/16




Elite Semiconductor

EML3408 Datasheet Preview

EML3408 Datasheet

Synchronous Step-Down Regulator

No Preview Available !

ESMT/EMP
Connection Diagrams
EML3408
Order information
EML3408-XXVF05NRR
XX Output voltage
VF05
SOT-23-5 Package
NRR RoHS & Halogen free package
Rating: -40 to 85°C
Package in Tape & Reel
EML3408-00VF05NRR
00 Adjustable version
VF05
SOT-23-5 Package
NRR RoHS & Halogen free package
Rating: -40 to 85°C
Package in Tape & Reel
Order, Marking & Packing Information
Package
Vout
Product ID.
1.2V
EML3408-12VF05NRR
1.5V
EML3408-15VF05NRR
SOT-23-5
1.8V
EML3408-18VF05NRR
3.3V
EML3408-33VF05NRR
Adj. EML3408-00VF05NRR
Marking
Packing
Tape & Reel
3Kpcs
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date: May 2011
Revision: 1.3
2/16


Part Number EML3408
Description Synchronous Step-Down Regulator
Maker Elite Semiconductor
PDF Download

EML3408 Datasheet PDF






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