LM2672LD-ADJ datasheet(7/25 Pages) NSC

No de pièce	LM2672LD-ADJ

Description	SIMPLE SWITCHER짰 Power Converter High Efficiency 1A Step-Down Voltage Regulator with Features

Download	25 Pages

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Fabricant	NSC [National Semiconductor (TI)]

Site Internet	http://www.national.com

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Typical Performance

Characteristics (Circuit of Figure 2)

Continuous Mode Switching Waveforms

V

IN = 20V, VOUT = 5V, ILOAD =1A

L = 47 µH, C

OUT = 68 µF, COUTESR=50 mΩ

Discontinuous Mode Switching Waveforms

V

IN = 20V, VOUT = 5V, ILOAD = 300 mA

L = 15 µH, C

OUT = 68 µF (2x), COUTESR=25 mΩ

01293418

Horizontal Time Base: 1 µs/div

A: VSW Pin Voltage, 10 V/div.

B: Inductor Current, 0.5 A/div

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

01293419

Horizontal Time Base: 1 µs/div

A: VSW Pin Voltage, 10 V/div.

B: Inductor Current, 0.5 A/div

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

Load Transient Response for Continuous Mode

V

IN = 20V, VOUT = 5V, ILOAD =1A

L = 47 µH, C

OUT = 68 µF, COUTESR=50 mΩ

Load Transient Response for Discontinuous Mode

V

IN = 20V, VOUT = 5V,

L = 47 µH, C

OUT = 68 µF, COUTESR=50 mΩ

01293420

Horizontal Time Base: 50 µs/div

A: Output Voltage, 100 mV/div, AC-Coupled

B: Load Current: 200 mA to 1A Load Pulse

01293421

Horizontal Time Base: 200 µs/div

A: Output Voltage, 100 mV/div, AC-Coupled

B: Load Current: 100 mA to 300 mA Load Pulse

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