MExx1C Series
Ver 02
MExx1C Series DC-DC Converter
MExx1C Series is a VFM Step-up DC/DC
converter IC with ultra-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. A low ripple, high efficiency
step-up DC/DC converter for MExx1C can be
constructed of with only three external components.
Also available is a CE(chip enable) function that
reduce power dissipation During shut-down
mode., and an independent Vdd pin function
(separated power supply and voltage detect pins) for
fly-back circuits. MExx1Cx is suitable for use with
battery-powered instruments with low noise and ultra
low supply current; Ext function can use for large
output circuit.
Features
• Ultra low ripple and noise；
• Low input current：6µA(Type)；
• 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=3.3V，then
Iout=250mA；
• Low start voltage：≤0.9V( at Iout=1mA)；
• Maximum oscillator frequency： 100KHz(Typ.)；
• High Efficiency：85%(Type)；
• PACKAGE：SOT23，SOT89。
Selection Guide
Applications
• 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。
TYPE
MExx1C
MExx1C1
MExx1C2
MExx1C3
POSTFIX
M
P
M
P
M
P
M
P
PACKAGE
SOT23-3
SOT89-3
SOT23-3
SOT89-3
SOT23-5
SOT89-5
SOT23-5
SOT89-5
SWITCHING
TRANSISTOR
Build-in
Transistor
External
Transistor
Build-in
Transistor
External
Transistor
Tel: 0755-82948776
CE
FUNCTION
No
No
Yes
Yes
FEATURES
Lx
Ext
Lx+CE
Ext+CE
www. cnzls.com.com
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