IR3876MBF datasheet(7/20 Pages) IRF

номер детали	IR3876MBF

подробное описание детали	12A HIGHLY INTEGRATED WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

PDF	20 Pages

Scroll/Zoom	100%

производитель	IRF [International Rectifier]

домашняя страница	http://www.irf.com

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IR3876MBF

TYPICAL OPERATING DATA

Tested with demoboard shown in Figure 7, VIN = 12.6V, VCC = 5V, Vout = 1.05V, Fs = 300kHz, TA = 25oC, no airflow,

unless otherwise specified

Figure 3. Switching Frequency vs. Output

Current

Figure 1. Efficiency vs. Output Current for

VOUT = 1.05V, L = 1.2µH (2.9mΩ)

Figure 2. Efficiency vs. Output Current for

VIN = 12.6V

Figure 4. Frequency vs. R

Figure 5. Output Voltage Regulation vs.

Output Current

Figure 6. Output Voltage Regulation vs.

Input Voltage at I

OUT = 12A

100

150

200

250

300

350

Output Current (A)

1.054

1.055

1.056

1.057

1.058

10 11 12 13 14 15 16 17

Input Voltage (V)

1.054

1.055

1.056

1.057

1.058

024

Output Current (A)

VOUT @ 16VIN

VOUT @ 12.6VIN

VOUT @ 7VIN

200

400

600

800

1000

1200

200

400

600

800

1000

Frequency (kHz)

5.0 Vout

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

40%

50%

60%

70%

80%

90%

100%

0.01

0.1

100

Output Current (A)

3.3VOUT; L = 2.2uH, 4.2mΩ

1.5VOUT; L = 1.2uH, 2.9mΩ

1.05VOUT; L = 1.2uH, 2.9mΩ

35%

45%

55%

65%

75%

85%

95%

0.01

0.1

100

Output Current (A)

16VIN

12.6VIN

7VIN

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