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零件编号 | ME2101 | ||
描述 | Step-up DC-DC Converter | ||
制造商 | Microne | ||
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1 Page
ME2101 Series
Ver 02
ME2101 Series Step-up DC-DC Converter
ME2101 Series is a PWM 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 2.0~5.0V and maximum
frequency is 100KHz(Typ.). A low ripple, high
efficiency step-up DC/DC converter can be
constructed of ME2101AxxX 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.An inner soft-start circuit limits current
surges from input power supply at start up and
the reliability of the chip is improved.
ME2101XxxX is suitable for use with
battery-powered instruments with low noise and
low supply current.
Features
• Small number of external components: only
an inductor, a diode and a capacitor;
• Low ripple and low noise;
• Operating voltage range:0.9V~6.5V;
• Output voltage range:2.0V~5.0V(step 0.1V);
• Output voltage accuracy:±2.5%;
• Output Current:if Vin=3.0V and Vout=3.3V,then
Iout=350mA;
• Low start voltage:≤0.9V(at Iout=1mA);
• Maximum oscillator frequency: 100KHz(Typ.);
• High Efficiency:87%(Type);
• Slow-Start Time :15mS(Type);
• PACKAGE:SOT-23,SOT-89.
Applications
Selection Guide
ME 21 01
A xx
X
Package
P–SOT89
M–SOT23
Feature Code
27–2.7V
30–3.0V
33–3.3
50–5.0V
…...
Version or Function
Product Type
Product Series
Microne
• 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
ME2101Axx
ME2101Bxx
ME2101Cxx
ME2101Dxx
POSTFIX
M
P
M
P
M
P
M
P
PACKAGE
SOT-23-3
SOT-89-3
SOT-23-3
SOT-89-3
SOT-23-5
SOT-89-5
SOT-23-5
SOT-89-5
SWITCHING
TRANSISTOR
Build_in
Transistor
Extemal
Transistor
Build_in
Transistor
Extemal
Transistor
CE
FUNCTION
No
No
Yes
Yes
FEATURES
Lx
Ext
Lx+CE
Ext+CE
1(11)
Typical Applications
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
ME2101 Series
Ver 02
Components: Inductor:47uH(Sumida )
Diode:IN5817、IN5819
Capacitor:47uF/16V(Tantalume type) Transistor:2SD1628G、2SD3279
NMOS:AAT9460、XP151、XP161
Base Resistor(Rb):1KΩ
Base Capacitor(Cb):2200pF
RFB :Set up so that RFB1 /RFB2=Vout-1(Vout=set-up output voltage),
Please use with RFB1+RFB2≤2MΩ;
CFB:Set up that Fzfb=1/(2×π×CFB×RFB1) is within the Adjustments
necessary in respect of L,CL.
8(11)
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页数 | 11 页 | ||
下载 | [ ME2101.PDF 数据手册 ] |
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