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PDF ME3101 Data sheet ( Hoja de datos )
| Número de pieza | ME3101 | |
| Descripción | 500mA Synchronous Step-Down DC/DC Converters | |
| Fabricantes | Microne | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ME3101 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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500mA Synchronous Step-Down DC/DC Converters ME3101 Series
Ver04
500mA Synchronous Step-Down DC/DC Converters ME3101 Series
Description：
ME3101 series is a group of synchronous rectification
type DC/DC converters with a built-in 0.6Ω P-channel
driver transistor and 0.7Ω N-channel switching transistor,
designed to allow the use of ceramic capacitors. The ICs
enable a high efficiency, stable power supply with an
output current of 500mA to be configured using only a
coil and two capacitors connected externally.
With the built-in oscillator, oscillation frequency is
1.2MHz.As for operation mode, the ME3101 series can be
manually switched with automatic PWM/PFM switching
control mode, allowing fast response, low ripple and high
efficiency over the full range of load (from light load to
high output current conditions).
During standby, all circuits are shutdown to reduce
current consumption to as low as 1.0μA or less.
Typical Application Circuit：
Feature：
z Synchronous Step-Down DC/DC
z High Efficiency :93%(TYP)
z Low Ripple Voltage :10mV
z Output Current :500mA
z Oscillation Frequency :1.2MHz
z PWM/PFM Automatic Switching Control
z Maximum Duty Ratio :100%
z Ceramic Capacitor Compatible
z Ultra Small Packages :SOT-23-5L
z Soft-start ciruit built-in
Typical Application:
z Mobile phones (PDC, GSM, CDMA, IMT200
etc.)
z Bluetooth equipment
z PDA
z Portable communication modem
z Portable games
z Cameras
z Digital cameras
z Cordless phones
z Notebook computers
Typical Performance Characteristics：
Efficiency vs. Output Current
L=3.3uH，Cin＝4.7uF，CL=10uF，Topr＝25℃
0.95
0.90
0.85
0.80
0.75
0.70
VIN=4V
VIN=4.5V
VIN=5V
VIN=6V
0.65
0.60
0.55
0.50
-100 0 100 200 300 400 500 600 700
IOUT (mA)
1/14
1 page  
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
500mA Synchronous Step-Down DC/DC Converters ME3101 Series
Ver04
ME3101A12 ( Unless Otherwise Stated ,VIN=3.0V，FOSC=1.2MHz, Cin=4.7uF，CL＝10uF，L＝3.3uH，Ta=25℃ )
PARAMETER
Output Voltage
Operating Voltage
Range
Maximum Output
Current
U.V.L.O
. Voltage
Supply Current
Stand-by Current
Frequency
PFM Switch
Current
Maximum Duty
Ratio
Minimum Duty
Ratio
Efficiency
Lx SW “H” ON
Resistance
Lx SW “L” ON
Resistance
Lx SW “H” Leak
Current
Lx SW “L” Leak
Current
Current Limit
Output Voltage
Temperature
Characteristics
CE “H” Voltage
CE “L” Voltage
CE “H” Current
CE “L” Current
SYMBOL
Vout
Vin
CONDITIONS
Vce＝Vin,Iout＝30mA
Iout.max
Vuvlo
Idd
Istb
FOSC
Ipfm
VIN=2.5V
Vce＝Vin,Vout＝0V,
LX Voltage which Lx pin
voltage holding "L" level
Vin＝Vce＝3.0V，
Vout＝Vout×1.1
Vin＝3.0V，Vce＝0V，
Vout＝Vout×1.1
Iout＝100mA
Vce＝Vin，Iout＝1mA
Maxdty
Vce＝Vin，Vout＝0
Mindty
Vce＝Vout＝Vin
EFFI
RlxH
Vce＝Vin＝2.5V，
Iout＝100mA
Vce＝0.5Vin，Vce＝0V，
Ilx＝100mA
RlxL
Vce＝0.5Vin，Ilx＝100mA
IleakH
IleakL
Ilim
Vin＝Vout＝5.0V，
Vce＝0V，Lx＝0V
Vin＝Vout＝5.0V，
Vce＝0V，Lx＝5V
Vin＝Vce＝5.0V，Vout＝0V
Vout/
(Vout*⊿topr)
Iout=30mA,-40℃≤Topr≤85℃
VceH
VceL
Iceh
Icel
Vout＝0V
Vout＝0V
Vin＝Vce＝5.5V，Vout＝0V
Vin＝5.5V，Vce＝0V，
Vout＝0V
MIN.
1.176
2
500
1
－
－
1020
100
100
－
－
－
－
－
－
600
－
0.9
Vss
-0.1
-0.1
TYP.
1.2
－
MAX.
1.224
6
UNIT
V
V
CIRCUIT
①
①
－ － mA
①
1.4 1.78 V
②
60
0
1200
140
－
－
90
0.5
0.6
0.01
0.01
700
+100
－
－
－
－
120 uA
1
1380
180
－
0
－
uA
KHz
mA
％
％
％
1.2 Ω
1.4 Ω
1 uA
1 uA
－ mA
－ ppm/℃
Vin V
0.3 V
0.1 uA
0.1 uA
③
③
①
①
④
④
①
⑤
－
⑥
⑥
⑦
①
⑧
⑧
⑧
⑧
Soft-Start Time
Tss
Vce＝0V～Vin，Iout＝1mA 0.5 1.0 3.0 msec
①
Latch Time
Tlat
Vin＝Vce＝5.0V
1 － 20 msec ⑨
5/14
5 Page 
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
500mA Synchronous Step-Down DC/DC Converters ME3101 Series
Ver04
VIN=5V,IOUT=0~300mA
VIN=5V,IOUT=300~0mA
VIN=5V,IOUT=0~550mA
VIN=5V,IOUT=550~0mA
11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ME3101.PDF ] | |
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