MCU
     CMOS LDO Linear Regulator
     Dual LDO Linear Regulator
     Bipolar LDO Linear Regulator
     Step-Up DC/DC Converter
     Step-Down DC/DC Converter
     Linear Constant LED Driver
     Charger Pump
     LED Backlight Driver
     LED Screen Driver
     Audio AMPLIFIER
     AC/DC Converter
     AC/DC Converter Supply
     Voltage detector/Reset IC
     Li-ion Battery Charger
     MOSFET
     MOSFET for LED Screen & BJT
ME2215

Descriptionú║
The ME2215 is a continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 6V and 36V and provides an externally adjustable output current of up to 1A. Depending upon supply voltage and external components, this can provide up to 30 watts of output power. The ME2215 includes the output switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current.
Output current can be adjusted below the set value, by applying an external control signal to the VSET pin. The VSET pin will accept either a DC voltage or a PWM waveform. The soft-start time can be increased using an external capacitor from the VSET pin to ground. Applying a voltage of 0.2V or lower to the VSET pin turns the output off and switches the device into a low current standby state.
Featuresú║
í˝Simple low parts count
í˝Internal 40V NDMOS switch
í˝1A output current
í˝Single pin on/off and brightness control Using DC voltage or PWM
í˝Soft-start
í˝High efficiency (up to 97%)
í˝Wide input voltage range: 6V to 36V
í˝Open LED Protection
í˝Short LED Protection
í˝Up to 1MHz switching frequency
í˝Typical 5% output current accuracy
í˝Package: SOT89-5
Applicationsú║
í˝Low voltage halogen replacement LEDs
í˝Low voltage industrial lighting
í˝LED back-side lighting
í˝Illuminated signs
Nanjing Micro One Electronics Inc. 5th Floor,Building No.1, No.699-8 Xuanwu Road, Xuzhuang software Park,Nanjing
Tel:86-25-84731186    Fax:86-25-84731136 ╦ŇICP▒Ş12033088║┼