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发布者:来自网络 发布时间:2019/12/18 阅读:221次    关键字: DC-DC
EML3383-1.5MHz 1A,Synchronous Step-Down Regulator


EML3383-1.5MHz 1A,Synchronous Step-Down Regulator DataSheet
 
General Description
EML3383 is a high efficiency step down DC/DC converter. It features an extremely low quiescent current, which is suitable for reducing standby power consumption, especially for portable applications.
The device can accept input voltage from 2.6V to 5.5V and deliver up to 1A output current. High 1.5MHz switching frequency allows the use of small surface mount inductors and capacitors to reduce overall PCB board space. Furthermore, the built-in synchronous switch improves efficiency and eliminates external Schottky diode. EML3383 uses different modulation modes for various loading conditions: (1) Pulse Width Modulation (PWM) for low output voltage ripple and fixed frequency noise, (2) Pulse Frequency Modulation (PSM) for improving light load efficiency.
In addition EML3383 also build in over current and over voltage protection. The adjustable version of this device is available in SOT-23-5L packages.
 
Features
n Approach 95% efficiency
n Input voltage : 2.6V to 5.5V
n Output current up to 1A
n Reference voltage: 0.6V
n Quiescent current 30μA
n Internal switching frequency: 1.5MHz
n No Schottky diode needed
n Low dropout operation: 100% duty cycle
n Shutdown current < 1μA
n Excellent line and load transient response
n Over-current protection
n Over-temperature protection
 
Applications
n Blue-Tooth devices
n Cellular and Smart Phones
n Wireless networking
n Portable applications
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