MCP16252 datasheet(7/34 Pages) MICROCHIP

7 / 34 page

 2013 Microchip Technology Inc.

DS25173A-page 7

MCP16251/2

Note: Unless otherwise indicated, VIN = EN = 1.5V, COUT = CIN = 10 µF, L = 4.7 µH, VOUT = 3.3V, ILOAD = 0 mA,

TA = +25°C, SOT-23 package.

FIGURE 2-13:

1.8VOUT Minimum Start-up

and Shutdown VIN into Resistive Load vs. IOUT.

FIGURE 2-14:

3.3VOUT Minimum Start-up

and Shutdown VIN into Resistive Load vs. IOUT.

FIGURE 2-15:

5.0VOUT Minimum Start-Up

and Shutdown VIN into Resistive Load vs. IOUT.

FIGURE 2-16:

N-Channel and P-Channel

RDSON vs. the maximum VIN or VOUT.

FIGURE 2-17:

Average PFM/PWM

Threshold Current vs. VIN.

FIGURE 2-18:

MCP16251 3.3V VOUT PFM

Mode Waveforms.

0.3

0.5

0.7

0.9

1.1

1.3

102030405060708090

Load Current (mA)

Shutdown

Startup

OUT =1.8V

0.3

0.5

0.7

0.9

1.1

1.3

102030405060708090

100

Load Current (mA)

Shutdown

Startup

OUT = 3.3V

0.3

0.5

0.7

0.9

1.1

1.3

1.5

1.7

102030405060708090 100

Load Current (mA)

Shutdown

Startup

OUT = 5.0V

P - Channel

0.9 1.2 1.5 1.8 2.1 2.4 2.7

3.3 3.6 3.9 4.2

> V

IN or VOUT

N - Channel

OUT = 5.0V

OUT = 3.3V

OUT = 2.0V

0.8

1.2

1.6

2.4

2.8

3.2

3.6

4.4

Input Voltage (V)

VOUT 100 mV/div

AC Coupled

IOUT =1 mA

IL 100 mA/div

VSW

200 µs/div

2 V/div

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