Datasheet

© 2011 Microchip Technology Inc. DS25004A-page 7
MCP16301
Note: Unless otherwise indicated, V
IN
= EN = 12V, C
OUT
= C
IN
= 2 X10 µF, L = 15 µH, V
OUT
= 3.3V, I
LOAD
= 200 mA,
T
A
= +25°C.
FIGURE 2-13: EN Threshold Voltage vs.
Temperature.
FIGURE 2-14: Light Load Switching
Waveforms.
FIGURE 2-15: Heavy Load Switching
Waveforms.
FIGURE 2-16: Typical Minimum Input
Voltage vs. Output Current.
FIGURE 2-17: Startup From Enable.
FIGURE 2-18: Startup From V
IN.
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
-40 -25 -10 5 20 35 50 65 80
Ambient Temperature (°C)
Enable Threshold Voltage (V)
V
IN
= 12V
I
OUT
= 100 mA
V
OUT
= 3.3V
V
OUT
= 3.3V
I
OUT
= 50 mA
V
IN
= 12V
V
OUT
20 mV/DIV
AC coupled
V
SW
5V/DIV
I
L
100 mA/DIV
1 µs/DIV
V
OUT
= 3.3V
I
OUT
= 600 mA
V
IN
= 12V
1 µs/DIV
V
OUT
=
20 mV/DIV
AC coupled
V
SW
=
5V/DIV
I
L
=
20 mA/DIV
3.20
3.50
3.80
4.10
4.40
4.70
5.00
1 10 100 1000
I
OUT
(mA)
Minimum Input Voltage (V)
To Start
To Run
V
OUT
= 3.3V
I
OUT
= 100 mA
V
IN
= 12V
V
OUT
2V/DIV
100 µs/
V
OUT
2V/DIV
100 µs/DIV
V
EN
2V/DIV
V
OUT
= 3.3V
I
OUT
= 100 mA
V
IN
= 12V
V
OUT
1V/DIV
V
IN
5V/DIV
100 µs/DIV