Datasheet

TC1303A/TC1303B/TC1303C/TC1304
DS21949C-page 14 © 2008 Microchip Technology Inc.
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 2-19: V
OUT1
Dropout Voltage vs.
Ambient Temperature.
FIGURE 2-20: V
OUT1
and V
OUT2
Heavy
Load Switching Waveforms vs. Time.
FIGURE 2-21: V
OUT1
and V
OUT2
Light
Load Switching Waveforms vs. Time.
FIGURE 2-22: V
OUT2
Output Voltage vs.
Input Voltage (V
OUT2
= 1.5V).
FIGURE 2-23: V
OUT2
Output Voltage vs.
Input Voltage (V
OUT2
= 1.8V).
FIGURE 2-24: V
OUT2
Output Voltage vs.
Input Voltage (V
OUT2
= 2.5V).
0.1
0.15
0.2
0.25
0.3
0.35
0.4
-40 -25 -10
5
20 35 50 65 80 95
110 125
Ambient Temperature (°C)
V
OUT1
Dropout Voltage (V)
SHDN1 = V
IN2
SHDN2 = A
GND
V
OUT1
= 3.3
V
I
OUT1
= 500 mA
1.482
1.484
1.486
1.488
1.49
1.492
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
V
OUT2
Output Voltage(V)
T
A
= - 40°C
T
A
= + 25°C
T
A
= + 85°C
I
OUT2
= 150 mA
SHDN1 = A
GND
SHDN2 = V
IN2
1.792
1.794
1.796
1.798
1.800
1.802
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
V
OUT2
Output Voltage (V)
T
A
= - 40°C
T
A
= + 25°C
T
A
= + 85°C
I
OUT2
= 150 mA SHDN1 = A
GND
SHDN2 = V
IN2
2.496
2.498
2.500
2.502
2.504
2.506
2.508
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
OUT2
Output Voltage (V)
T
A
= - 40°C
T
A
= + 25°C
T
A
= + 85°C
I
OUT2
= 150 mA
SHDN1 = A
GND
SHDN2 = V
IN2