Part Details for LM139 by Futuretech Components
Results Overview of LM139 by Futuretech Components
- Distributor Offerings: (1 listing)
- Number of FFF Equivalents: (0 replacements)
- Tariff Estimator: (Not Available)
- Number of Functional Equivalents: (0 options)
- CAD Models: (Request Part)
- Part Data Attributes: (Not Available)
- Reference Designs: (Available)
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LM139 Information
LM139 by Futuretech Components is a Comparator.
Comparators are under the broader part category of Amplifier Circuits.
Amplifier circuits use external power to increase the amplitude of an input signal. They can be used to perform linear amplifications or logarithmic functions. Read more about Amplifier Circuits on our Amplifier Circuits part category page.
Available Datasheets
| Part # | Manufacturer | Description | Datasheet |
|---|---|---|---|
| LM139D | Texas Instruments | Quad Differential Comparator 14-SOIC -55 to 125 | |
| LM139WB | Texas Instruments | Quad Differential Comparator 14-CFP -55 to 125 | |
| LM139AJB | Texas Instruments | Quad Differential Comparator 14-CDIP -55 to 125 |
Price & Stock for LM139
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
|
|
Futuretech Components Ltd | Integrated Circuits(ICs) ,EM/CM/EMS Only | 800 |
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RFQ |
Resources and Additional Insights for LM139
Reference Designs related to LM139
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High Eff 2Stage Univ Input Power Supply-Transition Mode PFC LLC Resonant Conv Reference Design
Low EMI: high efficiency: high power factor and reliable power supply are main focus of the PMP8911 design for telecom applications. Transient mode (TM) power factor correction (PFC) with UCC28051 and LLC series resonant converter (SRC) with UCC25600 are applied in PMP8911. Low EMI is expected with zero voltage switching on TM-PFC and LLC-SRC switches. An overall 92% efficiency is achieved at 100W full load. In addition: several protections are embedded into this design which includes input under-voltage protection: input over-voltage protection: output over-voltage protection: and output hic-cup over-power protection.
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20- to 40-VIN: 50-W Space-grade isolated flyback DC/DC over-current protection reference design
Spacecraft bus voltages vary from the well-established 28-V to more than the 100-V typically used in highpower commercial communications satellites: this reference design shows an example for a space-grade 50-W isolated intermediary bus converter: while implementing over-current protection (OCP) limit function. This design features INA901-SP radiation hardened current monitor: LM139AQML-SP quadcomparator: and UC1901-SP to create an isolated feedback flyback with current sensing and overcurrent flags – the UC1843A-SP current mode PWM controller is used to switch the low side MOSFET of the flyback converter and provide voltage and current to the output: the UC1901-SP senses the output voltage and completes the loop for the isolated feedback. The INA901-SP senses the input current which is provided to the LM139AQML-SP to create an overcurrent flag.