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LM2677S-3.3 データシート(PDF) 8 Page - Texas Instruments

部品番号 LM2677S-3.3
部品情報  LM2677 SIMPLE SWITCHER짰 High Efficiency 5A Step-Down Voltage Regulator
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LM2677S-3.3 データシート(HTML) 8 Page - Texas Instruments

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LM2677
SNVS077I – MAY 2004 – REVISED JUNE 2012
www.ti.com
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,
L = 10
μH, COUT = 400 μF, COUTESR = 13 mΩ
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 200 mA to 5A Load Pulse
Figure 18. Horizontal Time Base: 200
μs/div
8
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