Texas Instruments LM3940IT-3.3/NOPB
- Part Number:
- LM3940IT-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Ventron No:
- 3757062-LM3940IT-3.3/NOPB
- Description:
- 1-A, low-dropout voltage regulator for 5-V to 3.3-V conversion
- ECAD Model:
-
- Datasheet:
- lm3940
Description
The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. It is ideally suited for systems containing both 5-V and 3.3-V logic, with prime power provided from a 5-V bus. As a true low dropout regulator, the LM3940 can hold its 3.3-V output in regulation with input voltages as low as 4.5 V. The TO-220 package allows for delivery of the full 1 A of load current without an additional heatsink in most applications. The surface mount DDPAK/TO-263 package minimizes board space and provides excellent power dissipation capability when soldered to a copper plane on the PC board.
Features
Input voltage range: 4.5 V to 5.5 V
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
The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. It is ideally suited for systems containing both 5-V and 3.3-V logic, with prime power provided from a 5-V bus. As a true low dropout regulator, the LM3940 can hold its 3.3-V output in regulation with input voltages as low as 4.5 V. The TO-220 package allows for delivery of the full 1 A of load current without an additional heatsink in most applications. The surface mount DDPAK/TO-263 package minimizes board space and provides excellent power dissipation capability when soldered to a copper plane on the PC board.
Features
Input voltage range: 4.5 V to 5.5 V
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
Texas Instruments LM3940IT-3.3/NOPB technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments LM3940IT-3.3/NOPB.
- Factory Lead Time6 Weeks
- Lifecycle StatusACTIVE (Last Updated: 3 days ago)
- Contact PlatingTin
- MountThrough Hole
- Mounting TypeThrough Hole
- Package / CaseTO-220-3
- Number of Pins3
- Weight4.535924g
- Operating Temperature-40°C~125°C
- PackagingTube
- JESD-609 Codee3
- Pbfree Codeyes
- Part StatusActive
- Moisture Sensitivity Level (MSL)1 (Unlimited)
- Number of Terminations3
- TerminationThrough Hole
- ECCN CodeEAR99
- SubcategoryOther Regulators
- TechnologyBIPOLAR
- Terminal PositionSINGLE
- Number of Functions1
- Terminal Pitch2.54mm
- Current Rating1A
- Base Part NumberLM3940
- Pin Count3
- Number of Outputs1
- Voltage - Input (Max)7.5V
- Output Voltage3.3V
- Output TypeFixed
- Max Output Current1A
- Max Supply Voltage7.5V
- Min Supply Voltage4.5V
- Output ConfigurationPositive
- Quiescent Current15mA
- Max Output Voltage3.3V
- Output Voltage 13.3V
- Min Input Voltage4.5V
- Protection FeaturesOver Temperature, Short Circuit
- Voltage Dropout (Max)0.2V @ 100mA
- Dropout Voltage110mV
- Dropout Voltage1-Nom0.31V
- Voltage Tolerance-Max5.2%
- Nominal Output Voltage3.3V
- Height4.7mm
- Length14.986mm
- Width10.16mm
- Thickness4.572mm
- Radiation HardeningNo
- REACH SVHCNo SVHC
- RoHS StatusROHS3 Compliant
- Lead FreeLead Free
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