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LM2678SDX-5.0 Datasheet(PDF) 7 Page - Texas Instruments

Part # LM2678SDX-5.0
Description  LM2678 SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
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LM2678SDX-5.0 Datasheet(HTML) 7 Page - Texas Instruments

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LM2678
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SNVS029I – MARCH 2000 – REVISED APRIL 2013
Typical Performance Characteristics (continued)
Discontinuous Mode Switching Waveforms
Load Transient Response for Continuous Mode
VIN = 20V, VOUT = 5V, ILOAD = 500 mA
VIN = 20V, VOUT = 5V
L = 10
μH, COUT = 400 μF, COUTESR = 13 mΩ
L = 10
μH, COUT = 400 μF, COUTESR = 13 mΩ
A. VSW Pin Voltage, 10 V/div.
A. Output Voltage, 100 mV//div, AC-Coupled.
B. Inductor Current, 1 A/div
B. Load Current: 500 mA to 5A Load Pulse
C. Output Ripple Voltage, 20 mV/div AC-Coupled
Figure 16. Horizontal Time Base: 1
μs//iv
Figure 17. Horizontal Time Base: 100
μs/div
Load Transient Response for Discontinuous Mode
VIN = 20V, VOUT = 5V, vs
L = 10
μH, COUT = 400 μF, COUTESR = 13 mΩ
A. Output Voltage, 100 mV/div, AC-Coupled.
B. Load Current: 200 mA to 3A Load Pulse
Figure 18. Horizontal Time Base: 200
μs/div
Copyright © 2000–2013, Texas Instruments Incorporated
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