- Up to 96% conversion efficiency
- Available in SO-8 packages, 8-pin DIP and LLP packages
- Computer design softwareLM267X è semplice da produrre(Version 6.0)
- Simple and easy to use design with
- Only 5 external components are required
- Use off-the-shelf standard inductors
- 3.3V, 5.0V, 12V and adjustable output versions
- Adjustable version output voltage range from 1.21V to 37V
- ± 1.5% maximum output exceeds line voltage tolerance and load conditions
- Guaranteed output load current of 1A
-
0.25
 DMOS output switch
- Wide 8V to 40V Input Voltage Range:
- Internal oscillator at fixed frequency at 260 kHz
- TTL shutdown capability, low-power standby mode
- Thermal shutdown and current limit protection
illustrate
La serie di regolatori LM2675 è costituita da circuiti integrati monolitici con processo LMDMOS integrato. These regulators offer all positive buck (buck) switching regulators capable of driving 1A load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5.0V, 12V, adjustable output versions.
Requiring a minimum number of external components, these regulators are simple to use, including patented internal frequency compensation (patent 5382918 and 5514947) and fixed frequency oscillators.
La serie LM2675 opera a una frequenza di commutazione di 260 kHz, consentendo un rapporto di dimensioni ridotto con il gruppo filtro richiesto dai regolatori di commutazione a bassa frequenza. Due to its very high efficiency (> 90%), copper traces of the printed circuit board are the only heat dissipation required.
Un induttore standard LM2675 per uso domestico è disponibile da diversi produttori. This feature greatly simplifies the design of switching power supplies using these advanced integrated circuit supplies. Also included in the datasheet is a guide to selecting diodes and capacitors designed to operate in switch-mode power supplies.
Other features include a guaranteed tolerance of 1.5% of the output voltage specified in the ± and output load conditions for the input voltage and output load conditions, and a ± 10% of the oscillator frequency. External shutdown with a typical standby current of 50μA. The output switch includes current limit, thermal shutdown, and full protection during fault conditions.
Per semplificare il processo di progettazione del regolatore buck LM2675, esiste un software di progettazione informatica, LM267X simpleVersione 6.0.
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- Simple high efficiency (> 90%) buck (buck) regulator
- High efficiency pre-regulator, linear regulator
- Positive to negative voltage converters
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