| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Number of Pins | 7 Pin |
| Case/Package | TO-263-8 |
| Number of Outputs | 1 Output |
| Output Voltage | 1.2V ~ 37V |
| Output Current | 5 A |
| Number of Positions | 7 Position |
| Quiescent Current | 4.20 mA |
| Number of Regulated Outputs | 1 Output |
| Switching Frequency | 260 kHz |
| Topology | Buck |
| Input Voltage (Max) | 40 V |
| Input Voltage (Min) | 8 V |
| Output Voltage (Max) | 37 V |
| Output Voltage (Min) | 1.2 V |
| Output Current (Max) | 5 A |
| Operating Temperature (Max) | 125 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Supply Voltage | 8 V |
| Input Voltage | 8V ~ 40V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Tape & Reel (TR) |
| Operating Temperature | -40℃ ~ 125℃ (TJ) |
The LM2678 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 5-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® 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 LM2678 are available from several manufacturers to greatly simplify the design process.
●The LM2678 series also has built-in thermal shutdown, current limiting, and an ON/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.
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