LM2677SD-12 datasheet(7/34 Pages) TI1

部件名	LM2677SD-12

功能描述	LM2677 SIMPLE SWITCHER짰 High Efficiency 5A Step-Down Voltage Regulator

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制造商	TI1 [Texas Instruments]

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LM2677

www.ti.com

SNVS077I – MAY 2004 – REVISED JUNE 2012

Typical Performance Characteristics (continued)

Standby Quiescent Current

ON/OFF Threshold Voltage

Figure 10.

Figure 11.

ON/OFF Pin Current (Sourcing)

Switching Frequency

Figure 12.

Figure 13.

Continuous Mode Switching Waveforms

VIN = 20V, VOUT = 5V, ILOAD = 5A

Feedback Pin Bias Current

L = 10

μH, COUT = 400 μF, COUTESR = 13 mΩ

A: VSW Pin Voltage, 10 V/div.

B: Inductor Current, 2 A/div

C: Output Ripple Voltage, 20 mV/div AC-Coupled

Figure 14.

Figure 15. Horizontal Time Base: 1

μs/div

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