Design Made Easy with SIMPLE SWITCHER Products and
WEBENCH Power Designer Tool
SIMPLE SWITCHER® Controllers and Regulators, Combined with the Enhanced WEBENCH® Power Designer Tool, Provide the Performance and Flexibility Needed to Finalize Designs Quickly and Easily
| |
LM285x |
LM2557x |
LM557x |
LM310x |
New! LM2267x/
LM22680 |
New! LM315x |
| Vin Range |
2.85-5.5V |
6-42V |
6-75V |
4.5-42V |
4.5V-42V |
6-42V |
| Output Current |
2-4A |
0.5A-3A |
0.5A-3A |
0.75A-2.5A |
0.5A-5A |
5A-12A |
| Synchronous Topology for Highest Efficiency |
Yes |
No |
No |
Yes |
No |
Yes |
| Enable |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
| External Compensation |
No |
Yes |
Yes |
No |
No |
No |
| Adjustable Output Voltage (Min.) |
0.8V |
1.225V |
1.225V |
0.6/0.8V |
1.285V |
0.6V |
| Switching Frequency |
up to 1.5MHz |
up to 1MHz |
up to 500kHz |
up to 1MHz |
up to 1MHz |
up to 1MHz |
| Adjustable Soft-Start |
No |
Yes |
Yes |
Yes |
Yes |
No |
| Frequency Synchronization |
No |
Yes |
Yes |
No |
Yes |
No |
| Ultra-Fast Transient Response |
No |
Yes |
Yes |
Yes |
No |
Yes |
| Packages |
eTSSOP-14
eTSSOP-16 |
eTSSOP-16
eTSSOP-20 |
eTSSOP-16
eTSSOP-20 |
eTSSOP-20 |
PSOP-8
TO263-7 THIN |
eTSSOP-14 |
National's award-winning SIMPLE SWITCHER family allows you to design and optimize robust power supplies with the minimum set of external components. Supporting input voltage ranges of 3V to 75V, each SIMPLE SWITCHER series has multiple products with pin-to-pin compatibility for added design flexibility.
The newest LM2267x/LM22680 SIMPLE SWITCHER regulators feature the lowest BOM count, the LM2557x/557x regulators feature the best transient performance, and the LM310x regulators feature the highest efficiency. The new LM315x controllers provide support for high-power output designs.
All SIMPLE SWITCHER products work with the enhanced WEBENCH Power Designer end-to-end design and prototyping tools.
Published every other month, Power Designer's feature articles cover power management design techniques.
Published every month, this online technical publication features articles that highlight National products, as well as applications and techniques for solving analog and mixed-signal design challenges.
