Gehäuseinformationen
| Gehäuse | Pins SOIC (D) | 8 |
| Betriebstemperaturbereich (°C) -40 to 125 |
| Gehäusemenge | Träger 95 | TUBE |
Merkmale von LM2674
- New product available:
- For faster time to market:
- Efficiency up to 96%
- Available in 8-pin SOIC, PDIP, and 16-pin WSON packages
- Simple and easy to design with
- Requires only five external components
- Uses readily available standard inductors
- 3-V, 5-V, 12-V, and adjustable output versions
- 1.21-V to 37-V adjustable version output voltage range
- ±1.5% maximum output voltage tolerance over line and load conditions
- Ensured 500-mA output load current
- 0.25-Ω DMOS output switch
- 8-V to 40-V wide input voltage range
- 260-kHz fixed frequency internal oscillator
- TTL shutdown capability, low power standby mode
- Thermal shutdown and current limit protection
- Create a custom design using the LM2674 with the WEBENCH® Power Designer
Beschreibung von LM2674
The LM2674 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 500-mA load current with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.
Requiring a minimum number of external components, these regulators are simple to use and include patented internal frequency compensation and a fixed frequency oscillator.
The LM2674 series operates at a switching frequency of 260 kHz, thus allowing smaller sized filter components than what is required with lower frequency switching regulators. Because of very high efficiency (> 90%), the copper traces on the printed-circuit board are the only heat sinking required.
A family of standard inductors for use with the LM2674 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the data sheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies.