ME2108 Series is a PFM Step-up DC/DC converter IC

ME2108 General Description：

ME2108 Series is a PFM Step-up DC/DC converter IC with low supply current by CMOS process. High frequency noise that occurs during switching is reduced by using advanced circuit designed, output voltage is programmable in 0.1V steps between 2.0~7.0V and maximum frequency is 180KHz(TYP.).

A low ripple, high efficiency step-up DC/DC converter can be constructed of ME2108Xxx with only three external components. Also available is a CE(chip enable) function that reduce power dissipation During shut-down mode. ME2108Xxx is suitable for use with battery-powered instruments with low noise and low supply current.

ME2108 Features：

Low ripple and low noise

Operating voltage range：0.9V~6.5V

Output voltage range：2.0V~7.0V(step 0.1V)

Output voltage accuracy：±2.5%

Output Current：If VIN=3.0V and VOUT=5.0V,then IOUT=400mA

Low start voltage：≤0.9V(at IOUT =1mA)

Maximum oscillator frequency：180KHz(TYP.)

High Efficiency：85%(TYP.)

ME2108 Typical Application：

Power source for battery-powered equipment

Power source for wireless mouse, wireless keyboard, toys, cameras, camcorders, VCRs, PDAs, and hand-held communication equipment

Power source for appliances which require higher cell voltage than that of batteries used in the appliances

ME2108 Package：

3-pin: SOT23-3、SOT89-3、TO92

5-pin: SOT23-5

ME2108 Typical Applications：

Components：

Inductor：33uH(Sumida )

Diode：IN5817、IN5819

Capacitor：47uF/16V(Tantalum Capacitor)

Transistor：2SD1628G、2SD3279

NMOS：MEM2302、AAT9460、XP151、XP161

ME2108 Selection Guide：

NOTE:

At present ,there are five kinds of voltage value: 2.7V、2.8V、3.0V、3.3V、3.6V、4.0V、5.0V、5.6V。

If you need other voltage and package, please contact our sales staff。

ME2108Pin Configuration：

ME2108 Block Diagram：