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Elite Semiconductor

EML3406 Datasheet Preview

EML3406 Datasheet

Synchronous Step-Down Regulator

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Elite MicroPower Inc.
EML3406
1.5MHz 600mA, Synchronous Step-Down
Regulator
General Description
EML3406 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 600mA 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. EML3406 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
EML3406 is available in SOT-5 package.
Features
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
Typical Application (adjustable)
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 (350K)
R1 (100K)
Fig. 1
Fig. 2
Elite MicroPower Inc. reserves the right to make changes to improve reliability or manufacturability without notice,
and customers are advised to obtain the latest version of relevant information prior to placing orders.
DSL3406_V7.3 July 11 th 2008
Page 1 of 14
www.elitemicropower.com




Elite Semiconductor

EML3406 Datasheet Preview

EML3406 Datasheet

Synchronous Step-Down Regulator

No Preview Available !

Elite MicroPower Inc.
CONNECTION DIAGRAM
SOT-25
EN 1
GND 2
SW 3
5 VFB
4 VIN
EML3406
ORDER INFORMATION
EML3406-XXVF05GRR
XX Output voltage
VF05 SOT-25 Package
GRR RoHS Package
Rating: -40 to 85°C
Package in Tape & Reel
NRR
RoHS & Halogen free package(By Request)
Order, Mark & Packing Information
Product
Package
ID
Vout
Order information
1.2 EML3406-12VF05GRR
EML3406 SOT-25
1.5 EML3406-15VF05GRR
1.8 EML3406-18VF05GRR
3.3 EML3406-33VF05GRR
EML3406 SOT-25 adjustable EML3406-00VF05GRR
Marking
New
Old
L601
Date code
L604
Date code
L607
Date code
L60M
Date code
L600
Date code
Packing
Tape & Reel
3Kpcs
Elite MicroPower Inc. reserves the right to make changes to improve reliability or manufacturability without notice,
and customers are advised to obtain the latest version of relevant information prior to placing orders.
DSL3406_V7.3 July 11 th 2008
Page 2 of 14
www.elitemicropower.com


Part Number EML3406
Description Synchronous Step-Down Regulator
Maker Elite Semiconductor
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EML3406 Datasheet PDF





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