The LM2678 series of regulators are monolithic integrated circuits for a step-down switching voltage regulator capable of driving up to 5A 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 3.3V, 5V and 12V and an adjustable output version.
LM2678 12vdc 5amp voltage regulator schematic
LM2678 features
- Efficiency up to 92%
- Simple and easy to design with (using off-the-shelf external components)
- 120 mΩ DMOS output switch
- 3.3V, 5V and 12V fixed output and adjustable (1.2V to 37V ) versions
- 50μA standby current when switched OFF
- ±2%maximum output tolerance over full line and load conditions
- Wide input voltage range: 8V to 40V
- 260 KHz fixed frequency internal oscillator
LM2678 applications
- Simple to design, high efficiency (>90%) step-down switching voltage regulators
- Efficient system pre-regulator for linear voltage regulators
- Battery chargers
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