LM2671MX-3.3/NOPB National Semiconductor, LM2671MX-3.3/NOPB Datasheet - Page 8
![IC REG SW 3.3V 500MA STPDN 8SOIC](/photos/6/56/65640/pkg_m08a_sml.jpg)
LM2671MX-3.3/NOPB
Manufacturer Part Number
LM2671MX-3.3/NOPB
Description
IC REG SW 3.3V 500MA STPDN 8SOIC
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet
1.LM2671LD-ADJNOPB.pdf
(24 pages)
Specifications of LM2671MX-3.3/NOPB
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
3.3V
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-3.3
*LM2671MX-3.3/NOPB
LM2671MX-3.3
*LM2671MX-3.3/NOPB
LM2671MX-3.3
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2671MX-3.3/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
www.national.com
Typical Performance Characteristics
A: V
B: Inductor Current, 0.2 A/div
C: Output Ripple Voltage, 50 mV/div AC-Coupled
A: Output Voltage, 100 mV/div, AC-Coupled
B: Load Current: 100 mA to 500 mA Load Pulse
SW
Pin Voltage, 10 V/div.
Load Transient Response for Continuous Mode
L = 100 μH, C
L = 100 μH, C
Continuous Mode Switching Waveforms
V
IN
Horizontal Time Base: 50 μs/div
Horizontal Time Base: 1 μs/div
= 20V, V
V
IN
OUT
OUT
= 20V, V
OUT
= 100 μF, C
= 100 μF, C
= 5V, I
OUT
LOAD
= 5V
OUT
OUT
= 500 mA
ESR = 0.1Ω
ESR = 0.1Ω
10004220
10004218
8
(Circuit of Figure 2)
A: V
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
A: Output Voltage, 100 mV/div, AC-Coupled
B: Load Current: 100 mA to 400 mA Load Pulse
SW
Load Transient Response for Discontinuous Mode
Pin Voltage, 10 V/div.
L = 15 μH, C
Discontinuous Mode Switching Waveforms
L = 47 μH, C
V
IN
Horizontal Time Base: 200 μs/div
Horizontal Time Base: 1 μs/div
= 20V, V
OUT
V
OUT
IN
= 68 μF (2×), C
= 20V, V
OUT
= 68 μF, C
= 5V, I
OUT
LOAD
OUT
= 5V,
OUT
ESR = 50 mΩ
= 300 mA
ESR = 25 mΩ
10004219
10004221