LM3940IMP-3.3/NOPB | Texas Instruments
Voltage regulators, 3.3 V, 1 A, positive, SOT-223, LM3940IMP-3.3/NOPB
NCNR (non cancelable / non returnable)
Low Dropout Voltage Regulator, LM3940IMP-3.3/NOPB, Texas Instruments
The LM3940IMP-3.3/NOPB is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. The LM3940IMP-3.3/NOPB is ideally suited for a system which contains both 5-V and 3.3-V logic, with prime power provided from a 5-V bus. Because the LM3940IMP-3.3/NOPB is a true low dropout regulator, it can hold its 3.3-V output in regulation with input voltages as low as 4.5 V. The TO-220 package of the LM3940IMP-3.3/NOPB means that in most applications the full 1 A of load current can be delivered without using an additional heatsink. The surface mount DDPAK/TO-263 package uses minimum board space, and gives excellent power dissipation capability when soldered to a copper plane on the PC board.
Features
- Output Voltage Specified over Temperature
- Excellent Load Regulation
- Specified 1-A Output Current
- Requires only One External Component
- Built-in Protection against Excess Temperature
- Short-Circuit Protected
Applications
- Laptop and Desktop Computers
- Logic Systems
| Filter | Property | Value |
|---|---|---|
| Assembly | SMD | |
| Enclosure | SOT-223 | |
| Version | fixed | |
| Number of Regulators | 1 | |
| Input voltage AC | 4.5-5.5 V | |
| Output voltage DC | 3.3 V | |
| Output current | 1 A | |
| Polarity | positive | |
| min. operating temperature | -40 °C | |
| max. operating temperature | 125 °C |
| Property | Value |
|---|---|
| Customs tariff number | 85423990 |
| Country of origin | DE |
| MSL | MSL 1 |
| Property | Value |
|---|---|
| Date of RoHS guidelines | 3/31/15 |
| RoHS conform | Yes |
| SVHC free | Yes |