MCP1727T 데이터 시트보기 (PDF) - Microchip Technology
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MCP1727T Datasheet PDF : 32 Pages
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MCP1727
NOTE: Unless otherwise indicated VOUT = 1.8V (Adjustable), VIN = 2.8V, COUT = 4.7 µF Ceramic (X7R), CIN = 4.7 µF
Ceramic (X7R), IOUT = 1 mA, Temperature = +25°C, VIN = VOUT + 0.6V, RPWRGD = 10 kΩ To VIN.
0.40
Temperature = 25°C
0.35
0.30
VOUT = 2.5V
0.25
0.20
VOUT = 5.0V
0.15
0.10
0.05
0.00
0
250 500 750 1000 1250 1500
Load Current (mA)
FIGURE 2-19:
Current.
Dropout Voltage vs. Load
10
VR=2.5V, VIN=3.3V
1
VR=0.8V, VIN=2.3V
0.1
COUT=1 μF ceramic X7R
CIN=10 μF ceramic
IOUT=200 mA
0.01
0.001
0.01
0.1
1
10
100
Frequency (kHz)
1000
FIGURE 2-22:
Output Noise Voltage
Density vs. Frequency.
0.45
0.40
IOUT = 1.5A
0.35
VOUT = 5.0V
0.30
0.25
-45
VOUT = 2.5V
-20 5 30 55 80
Temperature (°C)
105 130
FIGURE 2-20:
Temperature.
Dropout Voltage vs.
0
-10
-20
-30
-40
-50
-60
-70
-80
0.01
VR=1.2V Adj
COUT=10 μF ceramic X7R
VIN=3.1V
CIN=0 μF
IOUT=10 mA
0.1
1
10
100
Frequency (kHz)
1000
FIGURE 2-23:
Power Supply Ripple
Rejection (PSRR) vs. Frequency (VOUT = 1.2V
Adj.).
3.00
2.50
2.00
1.50
1.00
0.50
VOUT = 2.5V
Temperature = 25°C
0.00
3.0 3.5 4.0 4.5 5.0 5.5 6.0
Input Voltage (V)
FIGURE 2-21:
Input Voltage.
Short Circuit Current vs.
0
-10
-20
-30
-40
-50
-60
-70
-80
0.01
VR=1.2V Adj
COUT=22 μF ceramic X7R
VIN=3.1V
CIN=0 μF
IOUT=10 mA
0.1
1
10
100
Frequency (kHz)
1000
FIGURE 2-24:
Power Supply Ripple
Rejection (PSRR) vs. Frequency (VOUT = 1.2V
Adj.).
© 2007 Microchip Technology Inc.
DS21999B-page 11
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