- Conversion efficiency up to 96%
- Available in SO-8, 8-pin DIP, and LLP packages
-
Computer design software The LM267X simplifies complexity (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: 1.21V to 37V
- ± 1.5% maximum output exceeds line voltage tolerance and load conditions
- Guaranteed 500mA output load current
- 0.25Ω DMOS output switch
- Wide input voltage range from 8V to 40V:
- 260 kHz fixed frequency internal oscillator
- TTL shutdown capability, low-power standby mode
- Soft start and frequency synchronization
- Thermal shutdown and current limit protection
illustrate
TheLM2671 series regulators are monolithic integrated circuits with a built-in LMDMOS process. These regulators provide all buck (buck) switching regulators capable of driving a 500mA load with excellent line and load regulation current. These devices are available in 3.3V fixed output voltage, 5.0V, 12V adjustable output versions.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation patents (patent numbers 5382918 and 5514947), fixed frequency oscillators, external shutdown, soft start, frequency synchronization.
LM2671 series switching frequency is operating in 260 kHz This enables a small size ratio to the lower frequency switching regulator required for filter components. Due to its very high efficiency (> 90%), the copper trace of the printed circuit board is the only heat dissipation need.
LM2671 standard inductor for home use, available from several different manufacturers. This feature greatly simplifies the design of switching power supplies, which are supplied using these advanced integrated circuits. Also included in the datasheet is a selection guide for designing diodes and capacitors for switch-mode power supplies.
Other features include a guaranteed tolerance of 1.5% of the output voltage for specified input voltage and output load conditions within the ±, and a ± 10% of the oscillator frequency. External shutdown with a typical standby current of 50μA. The output switches include current limiting, thermal shutdown, and adequate protection in fault conditions.
In order to simplify the design process of LM2671 buck regulator, there is computer design software, The LM267X simplifies complexity (version 6.0).
apply
- Simple, high-efficiency (> 90%) step-down (buck) regulator
- High efficiency pre-regulator, linear regulator
|