Datasheet

© 2008 Microchip Technology Inc. DS21949C-page 13
TC1303A/TC1303B/TC1303C/TC1304
Note: Unless otherwise indicated, V
IN1
= V
IN2
= SHDN1,2 = 3.6V, C
OUT1
=C
IN
= 4.7 µF, C
OUT2
=1µF, L =4.7µH,
V
OUT1
(ADJ) = 1.8V, T
A
= +25°C. Boldface specifications apply over the T
A
range of -40°C to +85°C. T
A
= +25°C. Adjustable- or fixed-
output voltage options can be used to generate the Typical Performance Characteristics.
FIGURE 2-13: V
OUT1
vs. I
OUT1
(V
OUT1
= 3.3V).
FIGURE 2-14: V
OUT1
Switching Frequency
vs. Input Voltage.
FIGURE 2-15: V
OUT1
Switching Frequency
vs. Ambient Temperature.
FIGURE 2-16: V
OUT1
Adjustable Feedback
Voltage vs. Ambient Temperature.
FIGURE 2-17: V
OUT1
Switch Resistance
vs. Input Voltage.
FIGURE 2-18: V
OUT1
Switch Resistance
vs. Ambient Temperature.
3.2
3.24
3.28
3.32
3.36
3.4
0.005 0.104 0.203 0.302 0.401 0.5
I
OUT1
(A)
V
OUT1
(V)
SHDN1 = V
IN2
SHDN2 = A
GND
V
IN1
= 4.2V
1.90
1.95
2.00
2.05
2.10
2.15
2.20
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
Input Voltage (V)
V
OUT1
Frequency (MHz)
SHDN1 = V
IN2
SHDN2 = A
GND
1.90
1.92
1.94
1.96
1.98
2.00
-40 -25 -10
5
20 35 50 65 80 95
110 125
Ambient Temperature (°C)
V
OUT1
Frequency (MHz)
SHDN1 = V
IN2
SHDN2 = A
GND
0.790
0.795
0.800
0.805
0.810
0.815
0.820
-40 -25 -10
5
20 35 50 65 80 95
110 125
Ambient Temperature (°C)
V
OUT1
FB Voltage (V)
SHDN1 = V
IN2
SHDN2 = A
GND
V
IN1
= 3.6V
0.3
0.35
0.4
0.45
0.5
0.55
0.6
3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
V
OUT1
Switch Resistance ()
SHDN1 = V
IN2
SHDN2 = A
GND
T
A
= 25 °C
N-Channel
P-Channel
0.3
0.35
0.4
0.45
0.5
0.55
0.6
0.65
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ambient Temperature (°C)
V
OUT1
Switch Resistance ()
SHDN1 = V
IN2
SHDN2 = A
GND
V
IN1
= 3.6V
N-Channel
P-Channel