MCP1790 datasheet(10/34 Pages) MICROCHIP

10 / 34 page

MCP1790/MCP1791

DS22075A-page 10

Note: Unless otherwise indicated, C

OUT = 4.7 uF Ceramic (X7R), CIN = 10.0 µF Ceramic (X7R), IOUT = 1 mA, Temperature = +25°C,

VIN = 6.0V, RPWRGD_PULLUP = 10 kΩ To VOUT, VSHDN = VIN, and device is MCP1790.

FIGURE 2-13:

Short Circuit Current vs

Input Voltage.

FIGURE 2-14:

Output Noise Voltage

Density vs. Frequency.

FIGURE 2-15:

Power Supply Ripple

Rejection vs. Frequency.

FIGURE 2-16:

Power Supply Ripple

Rejection vs. Frequency.

FIGURE 2-17:

Startup from VIN

(MCP1791).

FIGURE 2-18:

Startup from Shutdown

(MCP1791).

100

105

110

115

120

125

130

101418222630

Input Voltage (V)

ROUT < 0.1Ω

VOUT = 5.0V

VOUT = 3.3V

VOUT = 3.0V

0.00

0.01

0.10

1.00

10.00

0.01

0.1

100

1000

Frequency (kHz)

VR=5.0V

IOUT=50mA

VR=3.3V

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

0.01

0.1

100

1000

Frequency (kHz)

VR=3.3V

VIN=7.0V

VINAC = 400 mV p-p

CIN=0 μF

IOUT=10 mA

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

0.01

0.1

100

1000

Frequency (kHz)

VR=5.0V

VIN=7.0V

VINAC = 400 mV p-p

CIN=0 μF

IOUT=10 mA

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