LM2672M-ADJ National Semiconductor, LM2672M-ADJ Datasheet - Page 8

• Manufacturer Part Number: LM2672M-ADJ
• Description: IC, STEP-DOWN REGULATOR, 8-SOIC
• Manufacturer: National Semiconductor

Specifications of LM2672M-ADJ

• Primary Input Voltage: 40V
• No. Of Outputs: 1
• Output Voltage: 37V
• Output Current: 1.55A
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +125°C
• Supply Voltage Range: 6.5V To 40V
• Dc To Dc Converter Type: Step Down
• Number Of Outputs: 1
• Pin Count: 8
• Input Voltage: 40V
• Switching Freq: 260kHz
• Efficiency: 90%
• Package Type: SOIC N
• Output Type: Adjustable
• Switching Regulator: Yes
• Mounting: Surface Mount
• Input Voltage (min): 8V
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Typical Performance Characteristics
A: V
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
A: Output Voltage, 100 mV/div, AC-Coupled
B: Load Current: 200 mA to 1A Load Pulse
SW
Pin Voltage, 10 V/div.
Load Transient Response for Continuous Mode
L = 47 μH, C
L = 47 μH, C
Continuous Mode Switching Waveforms
Horizontal Time Base: 50 μs/div
V
V
Horizontal Time Base: 1 μs/div
IN
IN
= 20V, V
= 20V, V
OUT
OUT
= 68 μF, C
= 68 μF, C
OUT
OUT
= 5V, I
= 5V, I
OUT
OUT
LOAD
LOAD
ESR = 50 mΩ
ESR = 50 mΩ
= 1A
= 1A
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(Circuit of Figure 2)
A: V
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
A: Output Voltage, 100 mV/div, AC-Coupled
B: Load Current: 100 mA to 300 mA Load Pulse
SW
Load Transient Response for Discontinuous Mode
Pin Voltage, 10 V/div.
L = 15 μH, C
Discontinuous Mode Switching Waveforms
L = 47 μH, C
V
IN
Horizontal Time Base: 200 μs/div
Horizontal Time Base: 1 μs/div
= 20V, V
OUT
V
OUT
IN
= 68 μF (2×), C
= 20V, V
OUT
= 68 μF, C
= 5V, I
OUT
LOAD
OUT
= 5V,
OUT
ESR = 50 mΩ
= 300 mA
ESR = 25 mΩ
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