| Vin (Min) (V) | 6.5 |
| Vin (Max) (V) | 40 |
| Vout (Min) (V) | 1.23 |
| Vout (Max) (V) | 37 |
| Iout (Max) (A) | 1 |
| Iq (Typ) (uA) | 2500 |
| Switching frequency (Min) (kHz) | 225 |
| Switching frequency (Max) (kHz) | 400 |
| Features | Enable, Over Current Protection |
| Rating | Catalog |
| Regulated outputs (#) | 1 |
| Control mode | Voltage Mode |
| Duty cycle (Max) (%) | 95 |
- Efficiency up to 96%
- Available in 8-Pin SOIC and PDIP Packages
- Requires only 5 External Components
- 3.3-V, 5-V, 12-V, and Adjustable Output Versions
- Adjustable Version Output Voltage Range: 1.21 V
to 37 V - ±1.5% Maximum Output Voltage Tolerance Over
Line and Load Conditions - Specified 1-A Output Load Current
- Wide Input Voltage Range: 8 V to 40 V
- 260-kHz Fixed Frequency Internal Oscillator
- TTL Shutdown Capability, Low Power Standby
Mode - Soft-Start and Frequency Synchronization
- Thermal Shutdown and Current Limit Protection
The LM2672 series of regulators are monolithic integrated DC-DC converter built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A 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, fixed frequency oscillator, external shutdown, soft-start, and frequency synchronization.
The LM2672 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 its very high efficiency (>90%), the copper traces on the printed-circuit board are the only heat sinking required.
