LT3045 datasheet(14/45 Pages) AD

tên linh kiện	LT3045

Giải thích chi tiết về linh kiện	18V, 1A Step-Down Silent Switcher 3 with Ultra-Low Noise Reference

PDF	45 Pages

Scroll/Zoom	100%

nhà sản xuất	AD [Analog Devices]

Trang chủ	http://www.analog.com

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14 / 45 page

Data Sheet

LT83201

analog.com

Rev. A 14 of 45

Figure 28. Minimum VIN as a Function of VSET

Figure 29. No-Load Supply Current

Figure 30. Switching Frequency vs. Temperature

Figure 31. Minimum On-Time vs. Temperature

Figure 32. Minimum On-Time vs. Load

Figure 33. ISET During Start-Up with Fast Start-Up

Enabled (vs. Temperature)

MINIMUM VIN

VSET

VSET (V)

VOUT = VSET = 1V

L = 2.2µH

DISCONTINUOUS CONDUCTION MODE

IN REGULATION

INPUT VOLTAGE (V)

9 10 11 12 13 14 15 16 17 18

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

RT = 47.5kΩ

TEMPERATURE (°C)

–50

–25

100

125

1.900

1.925

1.950

1.975

2.000

2.025

2.050

2.075

2.100

ILOAD = 1A

VSET = 0V, VOUT TO REGULATE TO 0V

fSW = 2MHz

FORCED CONTINUOUS MODE

TEMPERATURE (°C)

–50

–25

100

125

10.0

10.5

11.0

11.5

12.0

12.5

13.0

13.5

14.0

14.5

15.0

VSET = 0V, VOUT TO REGULATE 0V

fSW = 2MHz

FORCED CONTINUOUS MODE

LOAD CURRENT (A)

0.2

0.4

0.6

0.8

VSET = 1V

VIN = 3V

VIN = 12V

VIN = 18V

TEMPERATURE (°C)

–50

–25

100

125

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

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