Gehäuseinformationen
| Gehäuse | Pins TO-220 (NDZ) | 7 |
| Betriebstemperaturbereich (°C) -40 to 125 |
| Gehäusemenge | Träger 45 | TUBE |
Merkmale von LM2676
- New product available:
- For faster time to market:
- Efficiency up to 94%
- Simple and easy to design with (using off-the-shelf external components)
- 150-mΩ DMOS output switch
- 3.3-V, 5-V, 12-V fixed output and adjustable (1.2 V to 37 V) versions
- 50-µA standby current when switched OFF
- ±2% maximum output tolerance over full line and load conditions
- Wide input voltage range: 8 V to 40 V
- 260-kHz fixed frequency internal oscillator
- –40 to 125°C operating junction temperature range
Beschreibung von LM2676
The LM2676 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 3-A loads with excellent line and load regulation characteristics. High efficiency (> 90%) is obtained through the use of a low ON-resistance DMOS power switch. The series consists of fixed output voltages of 3.3 V, 5 V, and 12 V and an adjustable output version.
The SIMPLE SWITCHER power converter concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260 kHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2676 are available from several manufacturers to greatly simplify the design process.
The LM2676 series also has built-in thermal shutdown, current limiting, and an ON and OFF control input that can power down the regulator to a low 50‑µA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.