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PDF ME2101A50 Data sheet ( Hoja de datos )
| Número de pieza | ME2101A50 | |
| Descripción | Step-up DC-DC Converter | |
| Fabricantes | Microne | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ME2101A50 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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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)
1 page  
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
ME2101 Series
Ver 02
Electrical Characteristics
ME2101A33 Vout=3.3V,Fosc=100kHz
SYMB-OL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VOUT
Output Voltage
3.218
3.300
3.382
V
VIN
Vstart
Vhold
IDD1
Maximum Input
Voltage
Oscillation
Start-up Voltage
Oscillation Hold
Voltage
Supply Current 1
IOUT=1mA，
VIN：0→2V
IOUT=1mA，
VIN：2→0V
No external
component
Vout=Vout*0.95,
6.5
0.8 0.9
0.24
V
V
V
35 µA
IDD2 Supply Current 2
Vout=Vout+0.5V
13 µA
ILX
ILXleak
Lx Switching
Current
Lx Leakage
Current
VLX=0.4V,
Vout=Vout*0.95
Vout=VLX=6V
260 mA
0.5 µA
IEXTH
EXT”High” On
Current
Same as IDD1.
VEXT=Vout-0.4V,
-6 mA
IEXTL
EXT”Low” On
Current
Same as IDD1..
VEXT=0.4V,
14 mA
VCEH
CE”High” Voltage Vout=Vce=set Vout*0.95 0.70
V
VCEL
CE”Low” Voltage Vout=Vce=set Vout*0.95
0.20 V
ICEH CE”High” Current Vout=6.0V, Vce=6.0V
0.25 uA
ICEL CE”low” Current Vout=6.0V, Vce=0.0V
-0.25
uA
Fosc
Oscillation
Frequency
Vout=set Vout*0.95
100 kHz
Maxdty
Duty Ratio
on(VLX“L”)side
80 87 92 %
EFFI
Efficiency
85 %
Tss Slow-Start Time
5 15 25 mS
Measuring conditions：Unless otherwise specified , VIN=Vout*0.6，VSS=0V，IOUT=10mA，Topt=25℃。
Note：1、Diode use Schottky diode such as IN5817 or IN5819 (forward voltage drop:0.2V)
2、Inductor：47μH（r<0.5Ω）
3、Capacitor：Tantalum type 47μF
5(11)
5 Page 
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
ME2101 Series
Ver 02
· The information described herein is subject to change without notice.
· Nanjing Micro One Electronics Inc is not responsible for any problems caused by circuits or
diagrams described herein whose related industrial properties, patents, or other rights belong to
third parties. The application circuit examples explain typical applications of the products, and
do not guarantee the success of any specific mass-production design.
· Use of the information described herein for other purposes and/or reproduction or copying
without the express permission of Nanjing Micro One Electronics Inc is strictly prohibited.
· The products described herein cannot be used as part of any device or equipment affecting
the human body, such as exercise equipment, medical equipment, security systems, gas
equipment, or any apparatus installed in airplanes and other vehicles, without prior written
permission of Nanjing Micro One Electronics Inc.
· Although Nanjing Micro One Electronics Inc exerts the greatest possible effort to ensure high
quality and reliability, the failure or malfunction of semiconductor products may occur. The
user of these products should therefore give thorough consideration to safety design, including
redundancy, fire-prevention measures, and malfunction prevention, to prevent any accidents,
fires, or community damage that may ensue.
11(11)
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ME2101A50.PDF ] | |
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