LM3940IT-3.3 – 3.3V 1A Low Dropout Regulator – TO-220 Package
The LM3940 is a 1A low-dropout regulator designed to provide 3.3 V from a 5-V supply. The LM3940 is ideally suited for systems that contain both 5V and 3.3V logic, with prime power provided by a 5-V bus. Because the LM3940 is a true low dropout regulator, it can hold its 3.3-V output in regulation with input voltages as low as 4.5V. The TO-220 package of the LM3940 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. Tags, LM3940IT-3.3, LM3940IT-3.3/NOPB, LM3940IT-3.3, LM3940.
Features:
- Input Voltage Range: 4.5V to 5.5V
- 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
Features/Specs:
- Manufacturer Part No: LM3940IT-3.3
- Manufacturer: National Semiconductor
- Series: LM3940
- Product Type: LDO Voltage Regulators
- Number of Outputs: 1 Output
- Output Type: Fixed
- Output Voltage: 3.3V
- Output Current: 1A
- Polarity: Positive
- Dropout Voltage Range: 0.8V at 1A 0.15V at 100 mA
- Quiescent Current: 15 mA
- Input Voltage Range: 4.5V ~ 7.5V
- Operating Temperature Range: -40°C ~ +125°C
- Dropout Voltage: 310 mV
- Ib – Input Bias Current: 10 mA
- Line Regulation: 40 mV
- Load Regulation: 50 mV
- Operating Supply Current: 110 uA
- Mounting Style: Through Hole
- Package/Case: TO-220-3
Datasheet: LM3940IT-3.3 – 3.3V 1A Low Dropout Regulator
Package Includes:
- 1 x LM3940IT-3.3 – 3.3V 1A Low Dropout Regulator – TO-220 Package
Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
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