LM2671MX-12/NOPB National Semiconductor, LM2671MX-12/NOPB Datasheet - Page 9
![IC REG SW 12V 500MA STP DN 8SOIC](/photos/6/56/65640/pkg_m08a_sml.jpg)
LM2671MX-12/NOPB
Manufacturer Part Number
LM2671MX-12/NOPB
Description
IC REG SW 12V 500MA STP DN 8SOIC
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet
1.LM2671LD-ADJNOPB.pdf
(24 pages)
Specifications of LM2671MX-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
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2671MX-12
*LM2671MX-12/NOPB
LM2671MX-12
*LM2671MX-12/NOPB
LM2671MX-12
Test Circuit and Layout Guidelines
C
C
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 μH Sumida #RCR110D-680L
C
C
C
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 μH Sumida #RCR110D-680L
R1 - 1.5 kΩ, 1%
C
For a 5V output, select R2 to be 4.75 kΩ, 1%
where V
Use a 1% resistor for best stability.
IN
OUT
B
IN
OUT
B
- 0.01 μF, 50V Ceramic
- 0.01 μF, 50V Ceramic
- 22 μF, 50V Tantalum, Sprague “199D Series”
- 22 μF, 50V Tantalum, Sprague “199D Series”
- 47 μF, 25V Tantalum, Sprague “595D Series”
- 47 μF, 25V Tantalum, Sprague “595D Series”
REF
= 1.21V
FIGURE 2. Standard Test Circuits and Layout Guides
FIGURE 3. Standard Test Circuits and Layout Guides
Adjustable Output Voltage Versions
Fixed Output Voltage Versions
9
10004222
10004223
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