Datasheet

MCP1650/51/52/53
DS21876B-page 8  2004-2013 Microchip Technology Inc.
Note: Unless otherwise indicated, V
IN
= 3.3V, VOUT = 12V, C
IN
= 10 µF (x5R or X7R Ceramic), C
OUT
= 10 µF (X5R or X7R),
I
OUT
= 10 mA, L = 3.3 µH, SHDN > V
IH
, T
A
= +25°C.
FIGURE 2-7: EXT Sink and Source
Current vs. Input Voltage.
FIGURE 2-8: EXT Sink and Source
Current vs. Ambient Temperature.
FIGURE 2-9: EXT Rise and Fall Times vs.
External Capacitance.
FIGURE 2-10: Feedback Voltage vs. Input
Voltage.
FIGURE 2-11: Feedback Voltage
Hysteresis vs. Input Voltage.
FIGURE 2-12: Dynamic Load Response.
0.0
0.2
0.4
0.6
0.8
1.0
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7 6.0
Input Voltage (V)
EXT Sink/Source Current (A)
I
SINK
I
SOURCE
T
A
= +25°C
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ambient Temperature (°C)
EXT Sink/Source Current (A)
I
SINK
I
SOURCE
V
IN
= 3.3
V
0
10
20
30
40
50
60
70
80
100 150 200 250 300 350 400 450 500
External Capacitance (pF)
EXT Rise / Fall Time (nS)
5V
FALL
2.7V
RISE
5V
RISE
2.7V
FALL
1.205
1.210
1.215
1.220
1.225
1.230
22.533.544.555.56
Input Voltage (V)
V
FB
Voltage (V)
T
J
= - 40°C
T
J
= +25°C
T
J
= +125°C
0
2
4
6
8
10
12
14
16
18
2.7 3 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7 6
Input Voltage (V)
V
FB
Hysteresis (mV)
T
J
= - 40°C
T
J
= +25°C
T
J
= +125°C