FR9886 Просмотр технического описания (PDF) - Unspecified

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FR9886

23V, 2.5A, 340Khz Synchronous Step-Down DC/DC Converter

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fitipower integrated technology lnc.

FR9886

Typical Performance Curves

VIN = 12V, VOUT = 3.3V, C1 = 10uF x 2, C2 = 22uF x 2, L1 = 10uH, TA = +25℃, unless otherwise noted.

IOUT=0A

IOUT=2.5A

85T

VSHDN 5V/div.

VSHDN 5V/div.

VOUT 1V/div.

IL 1A/div.

VLX 5V/div.

4ms/div.

Figure 17. Power On through SHDN Waveform

IOUT=0A

VSHDN 5V/div.

VOUT 1V/div.

IL 1A/div.

VLX 5V/div.

4ms/div.

Figure 19. Power Off through SHDN Waveform

VOUT 200mV/div.

VOUT 1V/div.

IL 1A/div.

VLX 5V/div.

4ms/div.

Figure 18. Power On through SHDN Waveform

IOUT=2.5A

VSHDN 5V/div.

VOUT 1V/div.

IL 1A/div.

VLX 5V/div.

80us/div.

Figure 20. Power Off through SHDN Waveform

VOUT 1V/div.

IL 1A/div.

400us/div.

Figure 21. Load Transient Waveform

FR9886- 1.0-APR-2011

IL 1A/div.

40us/div.

Figure 22. Short Circuit Test

8

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