LM2678SD-3.3/NOPB National Semiconductor, LM2678SD-3.3/NOPB Datasheet - Page 8
![IC REG SIMPLE SWITCHER 14-LLP](/photos/7/60/76063/pkg_src14a_sml.jpg)
LM2678SD-3.3/NOPB
Manufacturer Part Number
LM2678SD-3.3/NOPB
Description
IC REG SIMPLE SWITCHER 14-LLP
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet
1.LM2678SD-3.3NOPB.pdf
(26 pages)
Specifications of LM2678SD-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
14-LLP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
LM2678SD-3.3
LM2678SD-3.3TR
LM2678SD-3.3TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2678SD-3.3/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
www.national.com
A: V
B: Inductor Current, 2 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
A: Output Voltage, 100 mV//div, AC-Coupled.
B: Load Current: 500 mA to 5A Load Pulse
SW
Pin Voltage, 10 V/div.
Load Transient Response for Continuous Mode
L = 10 μH, C
L = 10 μH, C
Continuous Mode Switching Waveforms
Horizontal Time Base: 100 μs/div
V
Horizontal Time Base: 1 μs/div
IN
= 20V, V
V
OUT
OUT
IN
= 20V, V
= 400 μF, C
= 400 μF, C
OUT
= 5V, I
OUT
OUT
OUT
= 5V
LOAD
ESR = 13 mΩ
ESR = 13 mΩ
= 5A
10088617
10088619
8
A: V
B: Inductor Current, 1 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 200 mA to 3A Load Pulse
SW
Load Transient Response for Discontinuous Mode
Pin Voltage, 10 V/div.
Discontinuous Mode Switching Waveforms
L = 10 μH, C
L = 10 μH, C
V
IN
Horizontal Time Base: 200 μs/div
Horizontal Time Base: 1 μs//iv
= 20V, V
V
OUT
OUT
IN
= 20V, V
OUT
= 400 μF, C
= 400 μF, C
= 5V, I
OUT
LOAD
= 5V,
OUT
OUT
ESR = 13 mΩ
ESR = 13 mΩ
= 500 mA
10088620
10088618