Texas Instruments LM3940IMPX-3.3 IC REG LINEAR 3.3V 1A SOT223-4

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 internal protection circuit of LM3940 is designed to protect against thermal overload conditions. The circuit is not intended to replace proper heat sinking. Continuously running the device into thermal shutdown degrades its reliability.

评论

发表评论

此博客中的热门博文

Texas Instruments LM3940IMPX-3.3/NOPB 1 Output 3.3V 1A SOT-223-4

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 ...
阅读全文

LM1875T Texas Instruments IC AMP AUDIO PWR 30W AB TO220-5

Categories Integrated Circuits (ICs) Linear - Amplifiers - Audio Manufacturer Texas Instruments Series- Packaging Tube Part Status Active Type Class AB Output Type 1-Channel (Mono) Max Output Power x Channels @ Load 25W x 1 @ 8 Ohm Voltage - Supply 16 V ~ 60 V, ±8 V ~ 30 V Features Short-Circuit and Thermal Protection Mounting Type Through Hole Operating Temperature 0°C ~ 70°C (TA) Supplier Device Package TO-220-5 Package / Case TO-220-5 Formed Leads Base Part Number LM1875 The LM1875 has a sophisticated thermal protection scheme to prevent long-term thermal stress to the device. When the temperature on the die reaches 170°C, the LM1875 shuts down. It starts operating again when the die temperature drops to about 145°C, but if the temperature again begins to rise, shutdown will occur at only 150°C. Therefore, the device is allowed to heat up to a relatively high temperature if the fault condition is temporary, but a sustained fault will limit the m...
阅读全文

Texas Instruments LM1875T/LF02 IC AMP AUD PWR 20W MONO TO220-5

Design Resources Development Tool Selector Featured Product Create your power design now with TI’s WEBENCH® Designer PCN Assembly/Origin Mult Devices 21/Aug/2017 Online Catalog Class AB Amplifier Categories Integrated Circuits (ICs) Linear - Amplifiers - Audio Manufacturer Texas Instruments Series- Packaging Tube Part Status Active Type Class AB Output Type 1-Channel (Mono) Max Output Power x Channels @ Load 25W x 1 @ 8 Ohm Voltage - Supply 16 V ~ 60 V, ±8 V ~ 30 V Features Short-Circuit and Thermal Protection Mounting Type Through Hole Operating Temperature 0°C ~ 70°C (TA) Supplier Device Package TO-220-5 Package / Case TO-220-5 Formed Leads Base Part Number LM1875 The LM1875 has a sophisticated thermal protection scheme to prevent long-term thermal stress to the device. When the temperature on the die reaches 170°C, the LM1875 shuts down. It starts operating again when the die temperature drops to about 145°C, but if the temperature aga...
阅读全文