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DS20005255C-page 9

MCP16311/2

Note: Unless otherwise indicated, VIN =EN= 7V, COUT =CIN =2 x 10 µF, L =22 µH, VOUT =5.0V, ILOAD =100 mA,

TA =+25°C, 8L-MSOP package.

FIGURE 2-25:

Line Transient Response.

FIGURE 2-26:

PFM Light Load Switching

Waveforms.

FIGURE 2-27:

PWM Light Load Switching

Waveforms.

FIGURE 2-28:

Heavy Load Switching

Waveforms.

FIGURE 2-29:

PFM to PWM Transition;

Load Step from 5 mA to 100 mA.

VOUT

50 mV/div

VIN

5 V/div

400 µs/div

AC Coupled

VIN Step from 7V to 12V

VOUT

100 mV/div

IL

200 mA/div

20 µs/div

VIN = 24V

SW

10 V/div

IOUT = 25 mA

AC Coupled

VOUT

10 mV/div

IL

100 mA/div

1µs/div

VIN = 24V

SW

10 V/div

IOUT = 15 mA

AC Coupled

VOUT

50 mV/div

IL

200 mA/div

2µs/div

VIN = 12V

SW

10 V/div

VOUT = 5V

IOUT = 800 mA

AC Coupled

VOUT

100 mV/div

Load Current

50 mA/div

400 µs/div

VIN = 12V

SW

5 V/div

VOUT = 5V

AC Coupled