| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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3,600 pcs
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3600 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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1,874 pcs
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1874 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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642 pcs
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642 pcs | On Request | 1 | On Request | On Request | N/A | On Request | On Request | |
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543 pcs
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543 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The LM3940IT-3.3 is a 1A low-dropout linear voltage regulator from Texas Instruments, designed to provide a stable 3.3V output from a 5V supply. This regulator is ideal for applications that incorporate both 5V and 3.3V logic levels, with the primary power source being a 5V bus.
Featuring a low dropout voltage, the LM3940IT-3.3 can maintain regulation even with input voltages as low as 4.5V. It guarantees an output current of 1A and includes built-in protection against over-temperature conditions and short circuits. The device requires only one external component for operation.
The TO-220-3 package is suitable for many applications, allowing the full 1A load current to be delivered without the need for an additional heatsink. The operating temperature range is -40°C to 125°C.
Key electrical characteristics include an input voltage range of 4.5V to 5.5V, a typical dropout voltage of 310mV at 100mA, and an accuracy of 2.5%. It also offers features like low noise (150µVrms) and good PSRR (32dB at 100 KHz).
| Qty | Low | High |
|---|---|---|
| 1+ | $0.28 | $0.28 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The LM3940IT-3.3 provides a fixed output voltage of 3.3V.
The LM3940IT-3.3 has a guaranteed maximum output current of 1A.
The input voltage range for the LM3940IT-3.3 is from 4.5V to 5.5V.
The typical dropout voltage is 310mV, and the maximum dropout voltage is 0.2V at 100mA.
The LM3940IT-3.3 includes protection against over-temperature and short circuits.
The operating temperature range is -40°C to 125°C.
The LM3940IT-3.3 is available in a TO-220-3 package.