LM2674LD-12/NOPB National Semiconductor, LM2674LD-12/NOPB Datasheet - Page 22

• Manufacturer Part Number: LM2674LD-12/NOPB
• Description: IC REG SW 12V 500MA STP-DN 16LLP
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r
• Type: Step-Down (Buck)r

Specifications of LM2674LD-12/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 12V
• Current - Output: 500mA
• Frequency - Switching: 260kHz
• Voltage - Input: 6.5 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-LLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: LM2674LD-12; LM2674LD-12TR

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Application Information
TYPICAL SURFACE MOUNT PC BOARD LAYOUT,
FIXED OUTPUT (4X SIZE)
C
C
D1 - 1A, 40V Schottky Rectifier, Surface Mount
L1 - 47 µH, L13, Coilcraft DO3308
C
TYPICAL SURFACE MOUNT PC BOARD LAYOUT,
ADJUSTABLE OUTPUT (4X SIZE)
C
C
D1 - 1A, 40V Schottky Rectifier, Surface Mount
L1 - 100 µH, L20, Coilcraft DO3316
C
R1 - 1k, 1%
R2 - Use formula in Design Procedure
IN
OUT
B
IN
OUT
B
- 0.01 µF, 50V, Ceramic
- 0.01 µF, 50V, Ceramic
- 15 µF, 25V, Solid Tantalum Sprague, “594D series”
- 15 µF, 50V, Solid Tantalum Sprague, “594D series”
- 68 µF, 10V, Solid Tantalum Sprague, “594D series”
- 33 µF, 25V, Solid Tantalum Sprague, “594D series”
FIGURE 18. PC Board Layout
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