LM2674N-5.0 National Semiconductor, LM2674N-5.0 Datasheet - Page 7

• Manufacturer Part Number: LM2674N-5.0
• Description: DC/DC Converter IC
• Manufacturer: National Semiconductor

Specifications of LM2674N-5.0

• Input Voltage: 40V
• Output Current: 500mA
• Output Voltage: 5V
• No. Of Pins: 8
• Mounting Type: Through Hole
• Voltage Regulator Type: Switching
• Output Current Max: 500mA
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Typical Performance Characteristics
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 100 mA to 500 mA Load Pulse
Test Circuit and Layout Guidelines
C
C
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 µH Sumida # RCR110D-680L
C
IN
OUT
B
- 0.01 µF, 50V Ceramic
- 22 µF, 50V Tantalum, Sprague “199D Series”
Load Transient Response for Continuous Mode
- 47 µF, 25V Tantalum, Sprague “595D Series”
L = 100 µH, C
Horizontal Time Base: 50 µs/div
V
IN
OUT
= 20V, V
= 100 µF, C
OUT
FIGURE 2. Standard Test Circuits and Layout Guides
= 5V,
OUT
ESR = 0.1
Fixed Output Voltage Versions
DS100041-20
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 100 mA to 400 mA Load Pulse
(Circuit of Figure 2 ) (Continued)
7
Load Transient Response for Discontinuous Mode
L = 47 µH, C
Horizontal Time Base: 200 µs/div
V
OUT
IN
= 20V, V
= 68 µF, C
OUT
OUT
= 5V,
ESR = 50 m
DS100041-21
DS100041-22
www.national.com