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PDF EML3406 Data sheet ( Hoja de datos )
| Número de pieza | EML3406 | |
| Descripción | Synchronous Step-Down Regulator | |
| Fabricantes | Elite Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EML3406 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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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 (350KΩ)
R1 (100KΩ)
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
1 page  
Elite MicroPower Inc.
Typical Performance Characteristics
Efficiency vs Output Current
EML3406
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
Output Voltage vs Load Current
Reference voltage vs Temperature
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 5 of 14
www.elitemicropower.com
5 Page 
Elite MicroPower Inc.
Application (Continued)
Typical schematic for PCB layout
EML3406
EN
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 11 of 14
www.elitemicropower.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet EML3406.PDF ] | |
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