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LM2675LDX-5.0 数据表(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 LM2675LDX-5.0
功能描述  SIMPLE SWITCHER짰 Power Converter High Efficiency 1A Step-Down Voltage Regulator
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LM2675LDX-5.0 数据表(HTML) 8 Page - National Semiconductor (TI)

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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 m
Discontinuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD = 300 mA
L = 15 µH, C
OUT = 68 µF (2x), COUTESR=25 m
01280318
A: VSW Pin Voltage, 10 V/div.
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
Horizontal Time Base: 1 µs/div
01280319
A: VSW Pin Voltage, 10 V/div.
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
Horizontal Time Base: 1 µs/div
Load Transient Response for Continuous Mode
V
IN = 20V, VOUT = 5V, ILOAD =1A
L = 47 µH, C
OUT = 68 µF, COUTESR=50 m
Load Transient Response for Discontinuous Mode
V
IN = 20V, VOUT = 5V,
L = 47 µH, C
OUT = 68 µF, COUTESR=50 m
01280320
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 200 mA to 1A Load Pulse
Horizontal Time Base: 50 µs/div
01280321
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 100 mA to 400 mA Load Pulse
Horizontal Time Base: 200 µs/div
www.national.com
8


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