MCP1725 데이터 시트보기 (PDF) - Microchip Technology
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MCP1725 Datasheet PDF : 32 Pages
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MCP1725
Note: Unless otherwise indicated, VIN = VOUT + 0.5V or VIN = 2.3V (whichever is greater), IOUT = 1 mA,
CIN = COUT = 4.7 µF Ceramic (X7R), SHDN = VIN, CDELAY = Open, Fixed Output Version, and TA = +25°C.
0.25
0.20
VOUT = 5.0V
0.15
0.10
VOUT = 2.5V
0.05
0.00
0
100
200
300
400
500
Load Current (mA)
FIGURE 2-19:
Current.
Dropout Voltage vs. Load
10
VIN = 3.3V
VOUT = 2.5V
1
VIN = 2.3V
0.1
VOUT = 0.8V
ILOAD = 200 mA
COUT = 1 μF
CIN = 10 μF
0.01
0.001
0.01
0.1
1
10
100
Frequency (kHz)
1000
FIGURE 2-22:
Output Noise Voltage
Density vs. Frequency.
0.28
0.26 ILOAD = 500 mA
0.24
0.22
VOUT = 5.0V
0.20
0.18
VOUT = 2.5V
0.16
0.14
0.12
0.10
-45 -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=4.7 μF ceramic X7R
VIN=2.5V
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.).
1.20
1.10
1.00
0.90
0.80
0.70
0.60
0.50
3.0
IPEAK
VOUT = 2.5V Fixed
CIN = 3000 µF
ISTEADY STATE
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=2.5V
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.
DS22026B-page 11
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