MCP1790/MCP1791
Note: Unless otherwise indicated, C OUT = 4.7 uF Ceramic (X7R), C IN = 10.0 μF Ceramic (X7R), I OUT = 1 mA, Temperature = +25°C,
V IN = 6.0V, R PWRGD_PULLUP = 10 k Ω To V OUT , V SHDN = V IN, and device is MCP1790.
130
125
120
115
V OUT = 5.0V
V OUT = 3.3V
R OUT < 0.1 ?
-20
-30
-40
-50
-60
-70
V R =5.0V
V IN =7.0V
V INAC = 400 mV p-p
C IN =0 μ F
I OUT =10 mA
110
-80
105
V OUT = 3.0V
-90
-100
100
6
10
14 18 22
Input Voltage (V)
26
30
-110
-120
0.01 0.1 1 10
Frequency (kHz)
100
1000
FIGURE 2-13:
Short Circuit Current vs
FIGURE 2-16:
Power Supply Ripple
Input Voltage.
Rejection vs. Frequency.
10.00
1.00
0.10
0.01
0.00
V R =3.3V
V R =5.0V
I OUT =50mA
0.01
0.1
1 10
100
1000
Frequency (kHz)
FIGURE 2-14: Output Noise Voltage
Density vs. Frequency.
-20
V R =3.3V
-30
V IN =7.0V
-40
V INAC = 400 mV p-p
C IN =0 μ F
-50
I OUT =10 mA
-60
-70
-80
-90
-100
-110
FIGURE 2-17:
(MCP1791).
Startup from V IN
0.01
0.1
1 10
Frequency (kHz)
100
1000
FIGURE 2-15:
Power Supply Ripple
FIGURE 2-18:
Startup from Shutdown
Rejection vs. Frequency.
DS22075B-page 10
(MCP1791).
? 2010 Microchip Technology Inc.
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