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LM2673S-ADJ Fiches technique(PDF) 8 Page - Texas Instruments

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No de pièce LM2673S-ADJ
Description  LM2673 SIMPLE SWITCHER짰 3-A Step-Down Voltage Regulator With Adjustable Current Limit
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
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LM2673S-ADJ Fiches technique(HTML) 8 Page - Texas Instruments

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LM2673
SNVS030O – APRIL 2000 – REVISED JUNE 2016
www.ti.com
Product Folder Links: LM2673
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Copyright © 2000–2016, Texas Instruments Incorporated
Typical Characteristics (continued)
Figure 7. Switching Frequency
Figure 8. Feedback Pin Bias Current
Continuous Mode Switching Waveforms VIN = 20 V,
VOUT = 5 V, ILOAD = 3 A L = 33 µH, COUT = 200 µF,
COUTESR = 26 mΩ
A: VSW Pin Voltage, 10 V/div
B: Inductor Current, 1 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
Figure 9. Horizontal Time Base: 1 µs/div
Discontinuous Mode Switching Waveforms VIN = 20 V,
VOUT = 5 V, ILOAD = 500 mA L = 10 µH, COUT = 400 µF,
COUTESR = 13 mΩ
A: VSW Pin Voltage, 10 V/div
B: Inductor Current, 1 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
Figure 10. Horizontal Time Base: 1 µs//iv
Load Transient Response for Continuous Mode VIN = 20 V,
VOUT = 5 V L = 33 µH, COUT = 200 µF, COUTESR = 26 mΩ
A: Output Voltage, 100 mV//div, AC-Coupled.
B: Load Current: 500-mA to 3-A Load Pulse
Figure 11. Horizontal Time Base: 100 µs/div
Load Transient Response for Discontinuous Mode VIN = 20 V,
VOUT = 5 V, L = 10 µH, COUT = 400 µF, COUTESR = 13 mΩ
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 200-mA to 3-A Load Pulse
Figure 12. Horizontal Time Base: 200 µs/div


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