1A Low Dropout Regulator for 5V to 3.3V Conversion 3-DDPAK/TO-263 -40 to 125
Manufacturer: Texas Instruments
Win Source Part Number: 082756-LM3940IS-3.3
Packaging: Tube/Rail
Mounting: SMD (SMT)
Regulator Topology: Positive Fixed
Voltage - Dropout (Typical): 0.5V @ 1A
Number of Regulators: 1
Output Type: Fixed
Output Current: 1A
Output Voltage: 3.3V
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -40°C to 125°C
Case / Package: DDPAK/TO-263-3
Maximum Input Voltage: 7.5V
Nominal Output Voltage (Min/Fixed): 3.3V
Dropout Voltage-Max: 0.2V @ 100mA
Operating Supply Current: 15mA
Control Protection Features: Over Temperature, Short Circuit
Is this a common-used part?: Yes
Popularity: High
Fake Threat In the Open Market: 57 pct.
Supply and Demand Status: Limited
Application Field: Used in Power Management, Computers & Computer Peripherals, Signal Processing
3.3V LDO Regulator, 1A, TO-263, Surface Mount Product overview: LM3940IS-3.3 from Texas Instruments is a LDO Voltage Regulator IC for stable power rails, DC-DC conversion, battery-powered electronics, automotive modules, and embedded power management. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include LDO, SMD, 3.3V, 1A. Search-friendly keywords include voltage regulator, LDO, buck converter, boost converter, power rail, SMD, 3.3V, 1A, LDO Voltage Regulator IC, Linear & Switching Voltage Regulators. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 776-LM3940IS-3.3 can be used for catalog matching and distributor lookup.
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| Texas Instruments | Win Source Electronics | ERSAELECTRONICS PTE. LTD. | ODG (Origin Data Global) | DigiKey | VAST STOCK CO., LIMITED | Lingto Electronic Limited | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | |
|---|---|---|---|---|---|---|---|---|---|
| Product Category | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Voltage Regulators | IC Linear Voltage Regulators |
| Product Number | LM3940IS-3.3 | 082756-LM3940IS-3.3 | 776-LM3940IS-3.3 | LM3940IS-3.3 | LM3940IS-3.3-ND | LM3940IS-3.3 | LM3940IS-3.3 | LM3940IS-3.3 | LM3940IS-3.3 |
| Product Name | LM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion | PMIC - PMIC - Voltage Regulators - Linear - LM3940IS-3.3 | SMD 3.3V 1A LDO Voltage Regulator IC | Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | LDO Voltage Regulators | PMIC - Voltage Regulators - Linear | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - Linear | Voltage Regulators - Linear |
| Output Voltage Type | Fixed | Fixed; Fixed | Fixed | Fixed | Fixed | Fixed; Fixed | |||
| Package Type | Other; DDPAK/TO-263,SOT-223,TO-220 | DPAK; TO-263; Other; DDPAK/TO-263-3 | Other; TO-263 | TO-263; Other; TO-263-4, D²Pak (3 Leads + Tab), TO-263AA | TO-263; Other; TO-263-4, D2PAK (3 Leads + Tab), TO-263AA | TO-263; Other; TO-263-4, D²Pak (3 Leads + Tab), TO-263AA | |||
| Special Features | Input Overcurrent Protection; Thermal Shutdown Protection; Overcurrent Protection,Thermal Shutdown | Over Temperature, Short Circuit | |||||||
| Output Voltage | 3.3 volts | 3.3 volts | 3.3 volts | 3.3 volts | 3.3 volts | 3.3 volts | 3.3 to ? volts | ||
| IOUT | 1 amps | 1 amps | 1 amps | 1 amps | 1 amps | 1 amps | 1 amps | 1 amps |
