LM340MPX-5.0/NOPB

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1. Describe

LM340MPX-5.0/NOPB and LM7805 series monolithic 3 terminals Positive voltage regulator adopts internal current limit, thermal shutdown and safety zone Compensation makes them basically indestructible. If they provide enough heat dissipation, they can provide The output current exceeds 1.5A. They are fixed Widely used voltage regulator Include local (on card) regulations to eliminate Related noise and distribution issues Single point adjustment. In addition to being used for fixing Voltage regulators, these devices can interact with External components for adjustable output Voltage and current. It took considerable effort to make the whole Series regulators are easy to use and minimize The number of external components. no need Bypass the output, although this does improve Transient response. The input bypass is only required in the following cases Keep the regulator away from the filter capacitor power supply. LM7805 also provides higher accuracy and Better performance version (LM340A).

2. Feature

    1. Output current up to 1.5 A

    2. Provide fixed 5V, 12V and 15V options

    3. ±2% output voltage tolerance at TJ = 25°C (LM340A)

    4. 0.01% / V line regulation rate at 1A load (LM340A)

    5. 0.3% / A load regulation rate (LM340A)

    6. Internal thermal overload, short circuit and SOA Protect  

    7. Adopt the space-saving SOT-223 package

    8. No output capacitor required for stability

4. Application

    1. Industrial power supply

    2. SMPS postal supervision

    3. HVAC system

    4. AC inventor

    5. Test and measurement equipment

    6. Brushed and brushless DC motor drives

    7. Solar string inverter

5. Pin configuration

6. Pin Functions

7. Feature Description

    1. Output Current

        With proper considerations, the LM340 and LM7805 Family can exceed 1.5-A output current. Depending on the desired package option, the effective junction-to-ambient thermal resistance can be reduced through heat sinking, allowing more power to be dissipated in the device.

    2. Current Limiting Feature

        In the event of a short circuit at the output of the regulator, each device has an internal current limit to protect it from damage. The typical current limits for the LM340 and LM7805 Family is 2.4 A.

    3. Thermal Shutdown

        Each package type employs internal current limiting and thermal shutdown to provide safe operation area protection. If the junction temperature is allowed to rise to 150°C, the device will go into thermal shutdown.

    4. Device Functional Modes

        There are no functional modes for this device.

8. Application Information

The LM340x and LM7805 series is designed with thermal protection, output short-circuit protection, and output transistor safe area protection. However, as with any IC regulator, it becomes necessary to take precautions to assure that the regulator is not inadvertently damaged. The following describes possible misapplications and methods to prevent damage to the regulator.