LM2674N-3.3/NOPB
ActiveSIMPLE SWITCHER® 40V, 500MA LOW COMPONENT COUNT STEP-DOWN REGULATOR
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LM2674N-3.3/NOPB
ActiveSIMPLE SWITCHER® 40V, 500MA LOW COMPONENT COUNT STEP-DOWN REGULATOR
Technical Specifications
Parameters and characteristics for this part
| Specification | LM2674N-3.3/NOPB |
|---|---|
| Current - Output | 500 mA |
| Frequency - Switching | 260 kHz |
| Function | Step-Down |
| Mounting Type | Through Hole |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | 1.81 mOhm |
| Package / Case | 0.3 in |
| Package / Case | 8-DIP |
| Package / Case | 7.62 mm |
| Supplier Device Package | 8-PDIP |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Min) [Min] | 6.5 V |
| Voltage - Output (Min/Fixed) | 3.3 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 4.06 | |
| 10 | $ 3.65 | |||
| 40 | $ 3.45 | |||
| 120 | $ 2.99 | |||
| 280 | $ 2.84 | |||
| 520 | $ 2.55 | |||
| 1000 | $ 2.15 | |||
| 2520 | $ 2.04 | |||
| 5000 | $ 1.96 | |||
| Texas Instruments | TUBE | 1 | $ 3.33 | |
| 100 | $ 2.92 | |||
| 250 | $ 2.05 | |||
| 1000 | $ 1.65 | |||
Description
General part information
LM2674 Series
The LM2674 series of regulators are monolithic integrated circuits built with a LMDMOS process. These regulators provide all the active functions for a step-down (buck) switching regulator, capable of driving a 500-mA 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 LM2674 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 very high efficiency (> 90%), the copper traces on the printed-circuit board are the only heat sinking required.
Documents
Technical documentation and resources
