The LM2675 series of regulators are monolithic integrated DC-DC converter circuits 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 and a fixed frequency oscillator. The LM2675 series operates at a switching frequency of 260 kHz, thus allowing smaller-sized filter components than what would be needed 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 needed.
Features
Buck Switching Regulator IC- LM2675M-ADJ
1• Efficiency up to 96%
• Available in 8-Pin SOIC, PDIP, and 16-Pin WSON Package
• 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
• Ensured 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
• Thermal Shutdown and Current Limit Protection
Specifications
| Part Status | Not For New Designs |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage – Input (Min) | 5V |
| Voltage – Input (Max) | 40V |
| Voltage – Output (Min/Fixed) | 21V |
| Voltage – Output (Max) | 37V |
| Current – Output | 1A |
| Frequency – Switching | 260kHz |
| Synchronous Rectifier | No |
| Operating Temperature | 40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case – | 8-SOIC(0.154″, 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
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