LM2673SDX-5.0/NOPB National Semiconductor, LM2673SDX-5.0/NOPB Datasheet - Page 8

• Manufacturer Part Number: LM2673SDX-5.0/NOPB
• Description: IC REG STEP DOWN 3A 5.0V 14-LLP
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r
• Type: Step-Down (Buck)r

Specifications of LM2673SDX-5.0/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 3A
• Frequency - Switching: 260kHz
• Voltage - Input: 8 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-LLP
• For Use With: LM2673-5.0EVAL - EVALUATION BOARD FOR LM2673-5.0
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: LM2673SDX-5.0

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A: V
B: Inductor Current, 1 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
Block Diagram
* Active Inductor Patent Number 5,514,947
† Active Capacitor Patent Number 5,382,918
SW
Pin Voltage, 10 V/div.
L = 33 μH, C
Continuous Mode Switching Waveforms
V
Horizontal Time Base: 1 μs/div
IN
= 20V, V
OUT
= 200 μF, C
OUT
= 5V, I
OUT
LOAD
ESR = 26 mΩ
= 3A
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8
A: V
B: Inductor Current, 1 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
SW
Pin Voltage, 10 V/div.
Discontinuous Mode Switching Waveforms
L = 10 μH, C
V
IN
Horizontal Time Base: 1 μs//iv
= 20V, V
OUT
OUT
= 400 μF, C
= 5V, I
LOAD
OUT
ESR = 13 mΩ
= 500 mA
10091316
10091314