MCP1725 datasheet(11/32 Pages) MICROCHIP

11 / 32 page

DS22026A-page 11

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.

FIGURE 2-19:

Dropout Voltage vs. Load

Current.

FIGURE 2-20:

Dropout Voltage vs.

Temperature.

FIGURE 2-21:

Short Circuit Current vs.

Input Voltage.

FIGURE 2-22:

Output Noise Voltage

Density vs. Frequency.

FIGURE 2-23:

Power Supply Ripple

Rejection (PSRR) vs. Frequency (VOUT = 1.2V

Adj.).

FIGURE 2-24:

Power Supply Ripple

Rejection (PSRR) vs. Frequency (VOUT = 1.2V

Adj.).

0.00

0.05

0.10

0.15

0.20

0.25

100

200

300

400

500

Load Current (mA)

VOUT = 5.0V

VOUT = 2.5V

0.10

0.12

0.14

0.16

0.18

0.20

0.22

0.24

0.26

0.28

-45

-20

105

130

Temperature (°C)

VOUT = 5.0V

VOUT = 2.5V

ILOAD = 500 mA

0.50

0.60

0.70

0.80

0.90

1.00

1.10

1.20

3.03.5

4.04.5

5.05.5

6.0

Input Voltage (V)

ISTEADY STATE

IPEAK

VOUT = 2.5V Fixed

CIN = 3000 µF

0.001

0.01

0.1

0.01

0.1

100

1000

Frequency (kHz)

VIN = 3.3V

VOUT = 2.5V

VIN = 2.3V

VOUT = 0.8V

ILOAD = 200 mA

COUT = 1 μF

CIN = 10 μF

-80

-70

-60

-50

-40

-30

-20

-10

0.01

0.1

100

1000

Frequency (kHz)

VR=1.2V Adj

COUT=4.7 μF ceramic X7R

VIN=2.5V

CIN=0 μF

IOUT=10 mA

-80

-70

-60

-50

-40

-30

-20

-10

0.01

0.1

100

1000

Frequency (kHz)

VR=1.2V Adj

COUT=22 μF ceramic X7R

VIN=2.5V

CIN=0 μF

IOUT=10 mA

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