LM2679S-3.3/NOPB National Semiconductor, LM2679S-3.3/NOPB Datasheet - Page 7
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LM2679S-3.3/NOPB
Manufacturer Part Number
LM2679S-3.3/NOPB
Description
IC REG SIMPLE SWITCHER TO-263-7
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet
1.LM2679SD-5.0.pdf
(26 pages)
Specifications of LM2679S-3.3/NOPB
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
3.3V
Current - Output
5A
Frequency - Switching
260kHz
Voltage - Input
8 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
D²Pak, TO-263 (7 leads + tab)
For Use With
LM2679-5.0EVAL - EVALUATION BOARD FOR LM2679-5.0
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
*LM2679S-3.3
LM2679S-3.3
LM2679S-3.3
A: V
B: Inductor Current, 2 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
SW
Pin Voltage, 10 V/div.
L = 10 μH, C
Continuous Mode Switching Waveforms
V
Horizontal Time Base: 1 μs/div
IN
= 20V, V
Switching Frequency
OUT
= 400 μF, C
OUT
= 5V, I
OUT
LOAD
ESR = 13 mΩ
= 5A
10084715
10084712
7
A: V
B: Inductor Current, 1 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
SW
Pin Voltage, 10 V/div.
Discontinuous Mode Switching Waveforms
L = 10 μH, C
V
IN
Horizontal Time Base: 1 μs//iv
= 20V, V
Feedback Pin Bias Current
OUT
OUT
= 400 μF, C
= 5V, I
LOAD
OUT
ESR = 13 mΩ
= 500 mA
10084716
10084713
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