Datasheet

 2012 Microchip Technology Inc. DS25160A-page 11
MCP1755/1755S
Note 1: Unless otherwise indicated V
R
=3.3V, C
OUT
= 1 µF Ceramic (X7R), C
IN
= 1 µF Ceramic (X7R), I
L
=1mA,
T
A
=+25°C, V
IN
=V
R
+1V or V
IN
= 3.6V (whichever is greater), SHDN =V
IN
, package = SOT-223
FIGURE 2-13: Dropout Voltage vs. Load
Current.
FIGURE 2-14: Dynamic Line Response.
FIGURE 2-15: Dynamic Line Response.
FIGURE 2-16: Short Circuit Current vs.
Input Voltage.
FIGURE 2-17: Short Circuit Current vs.
Input Voltage.
FIGURE 2-18: Load Regulation vs.
Temperature.
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
p
out Voltage (V)
+130°C
+90°C
+25°C
V
OUT
= 5.0V
0.00
0.05
0.10
0.15
0 50 100 150 200 250 300
Dro
p
Load Current (mA)
-45°C
0°C
4.3V
5.3V
V
OUT
=3.3V
V
IN
=4.3V to 5.3V
I
OUT
=10 mA
V
OUT
(AC coupled, 20 mV/Div)
Time=10 µs/Div
V
IN
V
IN
=4.3V to 5.3V
I
OUT
=100 mA
5.3V
4.3V
V
IN
V
OUT
(AC coupled, 20 mv/Div)
Time=10 µs/Div
V
OUT
=3.3V
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
2 4 6 8 10 12 14
16
Output Current (A)
Input Voltage (V)
V
OUT
= 3.3V
+25 C
+125 C
-40 C
Hard Short Circuit
R
OUT
< 0.1:
0.3
0.4
0.5
0.6
0.7
p
ut Current (A)
Soft Short Circuit
R
OUT
= 5.5:
V
OUT
= 3.3V
+125°C
+25°C
-40°C
0
0.1
0.2
2 4 6 8 10 12 14 16
Out
p
Input Voltage (V)
0.10
0.15
0.20
0.25
0.30
0.35
0.40
d
Regulation (%)
V
IN
= 16V
V
IN
= 12V
V
IN
= 10V
V
IN
= 6V
V
IN
= 4.3V
V
IN
= 3.6V
-0.05
0.00
0.05
-40 -25 -10 5 20 35 50 65 80 95 110 125
Loa
d
Temperature (ºC)
V
OUT
= 1.8V
I
OUT
= 1 mA to 300 mA