FAN5353 データシートの表示（PDF） - ON Semiconductor

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FAN5353

3 MHz, 3 A Synchronous Buck Regulator

ON Semiconductor 

Typical Characteristics

Unless otherwise specified, VIN = 5 V, VOUT = 1.2 V, circuit of Figure 1, and components per Table 1.

VEN

VOUT

VPG

Isupply

VIN=VEN

VOUT

VPG

Isupply

Figure 15. Soft-Start: EN Voltage Raised After VIN =5.0 V,

ILOAD = 0, Horizontal Scale = 100 µs/div.

Figure 16. Soft-Start: EN Pin Tied to VCC,

ILOAD = 0, Horizontal Scale = 1 ms/div.

VEN

VOUT

VPG

Isupply

VIN=VEN

VOUT

VPG

Isupply

Figure 17. Soft-Start: EN Pin Raised after VIN = 5.0 V,

RLOAD = 400 mΩ. COUT = 100 µF, Horizontal Scale =

100µs/div.

Figure 18. Soft-Start: EN Pin Tied to VCC, RLOAD =

400 mΩ, COUT = 100 µF, Horizontal Scale = 1 ms/div.

© 2009 Fairchild Semiconductor Corporation

FAN5353 • Rev. 1.0.3

7

www.fairchildsemi.com

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