LM2675M-12 National Semiconductor, LM2675M-12 Datasheet - Page 6

• Manufacturer Part Number: LM2675M-12
• Description: DC/DC Converter IC
• Manufacturer: National Semiconductor

Specifications of LM2675M-12

• Input Voltage: 40V
• Output Current: 1A
• Output Voltage: 12V
• No. Of Pins: 8
• Mounting Type: Surface Mount
• Voltage Regulator Type: Switching
• Output Current Max: 1A
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Block Diagram
* Active Inductor Patent Number 5,514,947
Typical Performance Characteristics
A: V
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
†
Active Capacitor Patent Number 5,382,918
SW
L = 47 µH, C
Pin Voltage, 10 V/div.
Continuous Mode Switching Waveforms
V
Horizontal Time Base: 1 µs/div
IN
= 20V, V
OUT
= 68 µF, C
OUT
= 5V, I
OUT
LOAD
ESR = 50 m
= 1A
DS012803-18
FIGURE 1.
(Circuit of Figure 2 )
A: V
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
6
SW
L = 15 µH, C
Pin Voltage, 10 V/div.
Discontinuous Mode Switching Waveforms
V
IN
Horizontal Time Base: 1 µs/div
= 20V, V
OUT
= 68 µF (2x), C
OUT
= 5V, I
LOAD
OUT
= 300 mA
ESR = 25 m
DS012803-19
DS012803-17