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CategoriesIntegrated Circuits (ICs) PMIC - Voltage Regulators - Linear Manufacturer Texas Instruments Series- Packaging Digi-Reel® Part StatusDiscontinued at Digi-Key Output ConfigurationPositive Output TypeFixed Number of Regulators1 Voltage - Input (Max)7.5V Voltage - Output (Min/Fixed)3.3V Voltage - Output (Max)- Voltage Dropout (Max)0.2V @ 100mA Current - Output 1A PSRR- Control Features- Protection Features Over Temperature, Short Circuit Operating Temperature-40°C ~ 125°C Mounting Type Surface Mount Package / Case TO-261-4, TO-261AA Supplier Device PackageS OT-223-4 Base Part Number LM3940 It is important to note that for most capacitors, ESR is specified only at room temperature. However, the designer must ensure that the ESR will stay inside the limits shown over the entire operating temperature range for the design. For aluminum electrolytic capacitors, ESR will increase by about 30X as the temperature is reduced from 25°C to −...

Categories Integrated Circuits (ICs) PMIC - Voltage Regulators - Linear Manufacturer Texas Instruments Series- Packaging Cut Tape (CT) Part Status Discontinued at Digi-Key Output ConfigurationPositive Output Type Fixed Number of Regulators 1 Voltage - Input (Max)7.5V Voltage - Output (Min/Fixed)3.3V Voltage - Output (Max)- Voltage Dropout (Max)0.2V @ 100mA Current - Output 1A PSRR- Control Features- Protection Features Over Temperature, Short Circuit Operating Temperature-40°C ~ 125°C Mounting Type Surface Mount Package / Case TO-261-4, TO-261AA Supplier Device PackageS OT-223-4 Base Part Number LM3940 Description The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. The LM3940 is ideally suited for systems which contain both 5-V and 3.3-V logic, with prime power provided from 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...

Categories Integrated Circuits (ICs) PMIC - Voltage Regulators - Linear Manufacturer Texas Instruments Series- Packaging Tape & Reel (TR) Part StatusNot For New Designs Output ConfigurationPositive Output Type Fixed Number of Regulators 1 Voltage - Input (Max)7.5V Voltage - Output (Min/Fixed)3.3V Voltage - Output (Max)- Voltage Dropout (Max)0.2V @ 100mA Current - Output1A PSRR- Control Features- Protection Features Over Temperature, Short Circuit Operating Temperature -40°C ~ 125°C Mounting Type Surface Mount Package / Case TO-261-4, TO-261AA Supplier Device PackageS OT-223-4 Base Part Number LM3940 The LM3940 contains a thermal shutdown protection circuit to turn off the output current when excessive heat is dissipated in the LDO. The thermal time-constant of the semiconductor die is fairly short, and thus the output cycles on and off at a high rate when thermal shutdown is reached until the power dissipation is reduced. The intern...

Categories Integrated Circuits (ICs) PMIC - Voltage Regulators - Linear Manufacturer Texas Instruments Series- Packaging Digi-Reel® Part Status Active Output ConfigurationPositive Output Type Fixed Number of Regulators 1 Voltage - Input (Max) 7.5V Voltage - Output (Min/Fixed) 3.3V Voltage - Output (Max)- Voltage Dropout (Max) 0.2V @ 100mA Current - Output 1A PSRR- Control Features- Protection Features Over Temperature, Short Circuit Operating Temperature-40°C ~ 125°C Mounting Type Surface Mount Package / Case TO-261-4, TO-261AA Supplier Device PackageS OT-223-4 Base Part Number LM3940 For best overall performance, place all the circuit components on the same side of the circuit board and as near as practical to the respective LDO pin connections. Place ground return connections to the input and output capacitor, and to the LDO ground pin as close to each other as possible, connected by a wide, component-side, copper surface. The use of ...

Categories Integrated Circuits (ICs) PMIC - Voltage Regulators - Linear Manufacturer Texas Instruments Series- Packaging Cut Tape (CT) Part Status Active Output ConfigurationPositive Output Type Fixed Number of Regulators 1 Voltage - Input (Max) 7.5V Voltage - Output (Min/Fixed) 3.3V Voltage - Output (Max)- Voltage Dropout (Max) 0.2V @ 100mA Current - Output 1A PSRR- Control Features- Protection Features Over Temperature, Short Circuit Operating Temperature-40°C ~ 125°C Mounting Type Surface Mount Package / Case TO-261-4, TO-261AA Supplier Device PackageS OT-223-4 Base Part Number LM3940 The internal current limit circuit is used to protect the LDO against high-load current faults or shorting events. During a current-limit event, the LDO sources constant current. Therefore, the output voltage falls when load impedance decreases. Note also that if a current limit occurs and the resulting output voltage is low, excessive power may be diss...

Manufacturer Texas Instruments Manufacturer Part Number LM3940IMPX-3.3/NOPB DescriptionIC REG LINEAR 3.3V 1A S OT223-4 Manufacturer Standard Lead Time 12 Weeks Detailed Description Linear Voltage Regulator IC Positive Fixed 1 Output 3.3V 1A SOT-223-4 Categories Integrated Circuits (ICs) PMIC - Voltage Regulators - Linear Manufacturer Texas Instruments Series- Packaging Tape & Reel (TR) Part StatusActive Output ConfigurationPositive Output TypeFixed Number of Regulators1 Voltage - Input (Max)7.5V Voltage - Output (Min/Fixed)3.3V Voltage - Output (Max)- Voltage Dropout (Max) 0.2V @ 100mA Current - Output 1A PSRR- Control Features- Protection Features Over Temperature, Short Circuit Operating Temperature-40°C ~ 125°C Mounting Type Surface Mount Package / CaseTO-261-4, TO-261AA Supplier Device PackageS OT-223-4 Base Part Number LM3940 Description The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V...