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TC1303A Datasheet(PDF) 13 Page - Microchip Technology

Part No. TC1303A
Description  500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
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TC1303A Datasheet(HTML) 13 Page - Microchip Technology

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© 2005 Microchip Technology Inc.
DS21949B-page 13
TC1303A/TC1303B/TC1303C/TC1304
Note: Unless otherwise indicated, VIN1 = VIN2 = SHDN1,2 = 3.6V, COUT1 =CIN = 4.7 µF, COUT2 =1 µF, L =4.7 µH,
VOUT1 (ADJ) = 1.8V, TA = +25°C. Boldface specifications apply over the TA range of -40°C to +85°C. TA = +25°C. Adjustable- or fixed-
output voltage options can be used to generate the Typical Performance Characteristics.
FIGURE 2-19:
VOUT1 Dropout Voltage vs.
Ambient Temperature.
FIGURE 2-20:
VOUT1 and VOUT2 Heavy
Load Switching Waveforms vs. Time.
FIGURE 2-21:
VOUT1 and VOUT2 Light
Load Switching Waveforms vs. Time.
FIGURE 2-22:
VOUT2 Output Voltage vs.
Input Voltage (VOUT2 = 1.5V).
FIGURE 2-23:
VOUT2 Output Voltage vs.
Input Voltage (VOUT2 = 1.8V).
FIGURE 2-24:
VOUT2 Output Voltage vs.
Input Voltage (VOUT2 = 2.5V).
0.1
0.15
0.2
0.25
0.3
0.35
0.4
Ambient Temperature (°C)
SHDN1 = VIN2
SHDN2 = AGND
VOUT1 = 3.3V
IOUT1 = 500 mA
1.482
1.484
1.486
1.488
1.49
1.492
2.73.053.4
3.75
4.14.454.8
5.15
5.5
Input Voltage (V)
TA = - 40°C
TA = + 25°C
TA = + 85°C
IOUT2 = 150 mA
SHDN1 = AGND
SHDN2 = VIN2
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)
TA = - 40°C
TA = + 25°C
TA = + 85°C
IOUT2 = 150 mA
SHDN1 = AGND
SHDN2 = VIN2
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)
TA = - 40°C
TA = + 25°C
TA = + 85°C
IOUT2 = 150 mA
SHDN1 = AGND
SHDN2 = VIN2


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