LM2575T-5.0 National Semiconductor, LM2575T-5.0 Datasheet - Page 9
LM2575T-5.0
Manufacturer Part Number
LM2575T-5.0
Description
Voltage Regulator IC
Manufacturer
National Semiconductor
Specifications of LM2575T-5.0
Input Voltage
40V
Output Current
1A
Output Voltage
5V
No. Of Outputs
1
No. Of Pins
5
Operating Temperature Range
-40°C To +125°C
Termination Type
Through Hole
Mounting Type
Through Hole
Dc
0848
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM2575T-5.0
Manufacturer:
HTC
Quantity:
10 213
Part Number:
LM2575T-5.0
Manufacturer:
NS/国半
Quantity:
20 000
Company:
Part Number:
LM2575T-5.0/NOPB
Manufacturer:
NS
Quantity:
9 999
Part Number:
LM2575T-5.0/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
Part Number:
LM2575T-5.0/PB
Manufacturer:
NS/国半
Quantity:
20 000
Typical Performance Characteristics
V
A: Output Pin Voltage, 10V/div
B: Output Pin Current, 1A/div
C: Inductor Current, 0.5A/div
D: Output Ripple Voltage, 20 mV/div,
AC-Coupled
Horizontal Time Base: 5 µs/div
Test Circuit and Layout Guidelines
As in any switching regulator, layout is very important. Rap-
idly switching currents associated with wiring inductance
generate voltage transients which can cause problems. For
minimal inductance and ground loops, the length of the leads
indicated by heavy lines should be kept as short as possible.
OUT
= 5V
Feedback Pin Current
Switching Waveforms
01147505
01147506
(Circuit of Figure 2 ) (Continued)
9
Single-point grounding (as indicated) or ground plane con-
struction should be used for best results. When using the
Adjustable version, physically locate the programming resis-
tors near the regulator, to keep the sensitive feedback wiring
short.
Maximum Power Dissipation
Load Transient Response
(TO-263) (See (Note 12))
01147528
www.national.com
01147507