TC2575 datasheet(22/25 Pages) TELCOM

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TC2575

1.0A Step-Down Switching Regulator

TC2575-1 3/13/00

TYPICAL CHARACTERISTICS (Circuit of Figure 2)

–50

3.0

–50

2.0

1.2

–50

VIN INPUT VOLTAGE (V)

TJ, JUNCTION TEMPERATURE (°C)

VIN INPUT VOLTAGE (V)

TJ, JUNCTION TEMPERATURE (°C)

SWITCH CURRENT (A)

Figure 20. Normalized Output Voltage

TJ, JUNCTION TEMPERATURE (°C)

Figure 21. Line Regulation

VIN= 20 V

ILOAD = 200mA

Normalized at

TJ = 25°C

Figure 22 Switch Saturation Voltage

Figure 23. Current Limit

Figure 24. Dropout Voltage

Figure 25. Quiescent Current

ILOAD = 200mA

TJ = 25°C

3.3 V, 5.0 V and Adj

12V

°C

VIN = 25V

Measured at

Ground Pin

TJ = 25°C

ILOAD = 200mA

ILOAD = 1.0A

∆VOUT = 5%

RIND = 0.2

Ω

125

°C

–40

°C

5.0

–25

100

125

0.8

0.4

–0.2

–0.4

0.6

0.2

1.0

0.6

0.2

–0.2

–0.6

2.5

1.5

0.5

2.0

1.0

6.0

4.0

8.0

1.1

0.9

0.7

0.5

1.0

0.8

0.6

1.2

0.8

0.4

1.0

0.6

1.8

1.4

1.6

0.4

–25

0.1

0.2

0.3

0.4

0.5

100

0.6

125

0.7

5.0

–5

100

125

0.8

0.9

1.0

ILOAD = 200mA

ILOAD = 1.0A

VOUT = 5.0V

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