MCP1640/B/C/D
Note: Unless otherwise indicated, V = EN = 1.2V, C
= C = 10 µF, L = 4.7 µH, V
= 3.3V, I
= 15 mA, T = +25°C.
IN
OUT
IN
OUT
LOAD A
3.33
1.00
VIN = 1.2V
IOUT = 15 mA
VOUT = 3.3V
3.325
3.32
0.85
0.70
0.55
0.40
0.25
VIN = 1.8V
Startup
3.315
3.31
3.305
3.3
Shutdown
VIN = 0.8V
3.295
3.29
3.285
0
20
40
60
80
100
-40
-25
-10
5
20
35
50
65
80
IOUT (mA)
Ambient Temperature (°C)
FIGURE 2-7:
3.3V VOUT vs. Ambient
FIGURE 2-10:
Minimum Start-up and
Temperature.
Shutdown VIN into Resistive Load vs. IOUT
.
3.38
3.36
3.34
3.32
3.30
525
520
515
510
505
500
495
490
485
480
VOUT = 3.3V
VIN = 1.5V
IOUT = 5 mA
IOUT = 15 mA
3.28
3.26
IOUT = 50 mA
-10
-40
-25
5
20
35
50
65
80
-40
-25
-10
5
20
35
50
65
80
Ambient Temperature (°C)
Ambient Temperature (°C)
FIGURE 2-8:
3.3V VOUT vs. Ambient
FIGURE 2-11:
F
OSC vs. Ambient
Temperature.
Temperature.
3.40
4.5
4
TA = 85°C
IOUT = 5 mA
VOUT = 5.0V
3.36
3.5
3
VOUT = 3.3V
TA = 25°C
3.32
3.28
3.24
3.20
2.5
2
VOUT = 2.0V
TA = - 40°C
1.5
1
0.5
0
0.8
1.2
1.6
2
2.4
2.8
0
1
2
3
4
5
6
7
8
9
10
VIN (V)
IOUT (mA)
FIGURE 2-9:
3.3V VOUT vs. VIN.
FIGURE 2-12:
Threshold vs. IOUT
PWM Pulse Skipping Mode
.
DS22234A-page 6
2010 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
