L4978D

The L4978D is a high-performance, step-down (buck) switching regulator designed for efficient voltage regulation in various applications. It offers a wide input voltage range, typically from 10V to 40V, making it suitable for automotive and industrial use. With a maximum output current of around 2A, the L4978D can deliver reliable power for loads requiring stable voltage levels.
Key features include a built-in PWM (Pulse Width Modulation) controller, adjustable output voltage through external resistors, and integrated protection mechanisms such as overcurrent protection and thermal shutdown. Its compact package design allows for easy integration into space-constrained applications.
The L4978D is favored in scenarios requiring high efficiency, low ripple output, and robust performance across varying load conditions, making it ideal for powering microcontrollers, sensors, and other electronic devices.

The L4978D is a high-voltage, high-performance switching regulator designed for use in various power applications. Key features include:
1. Wide Input Voltage Range: Operates from 10V to 40V, making it suitable for various power sources.
2. High Efficiency: Achieves efficiencies exceeding 80%, reducing heat and improving reliability.
3. Adjustable Output Voltage: Provides an output voltage that can be adjusted from 1.5V to 37V, allowing flexibility in design.
4. Current Limiting: Incorporates current limiting protection to prevent overload conditions.
5. Thermal Protection: Features thermal shutdown to protect against overheating.
6. Integrated Switching Transistor: Reduces component count and simplifies design.
7. Frequency Modulation: Offers frequency modulation to reduce noise and improve performance in sensitive applications.
8. Compact Package: Available in a DIL package, facilitating easy integration into various circuits.
These features make the L4978D ideal for automotive, industrial, and telecommunications power supply applications.

The L4978D is typically available in a Power Dip package, specifically a 7-lead or 8-lead configuration. This package design allows for effective heat dissipation and easy mounting on printed circuit boards.

The L4978D is a high-voltage power switching regulator with a pin count of 15. It is designed for off-line applications, such as power supplies.
Pin Functions:
1. Pin 1 (Vref): Reference voltage output.
2. Pin 2 (Vcc): Supply voltage input.
3. Pin 3 (GND): Ground reference.
4. Pin 4 (Comp): Compensation network connection.
5. Pin 5 (CT): Timing capacitor for oscillator.
6. Pin 6 (Rosc): Resistor for frequency setting.
7. Pin 7 (Isense): Current sensing input.
8. Pin 8 (SW): Switch output to the transformer.
9. Pin 9 (Vout): Output voltage feedback input.
10. Pin 10 (Fbk): Feedback return for regulation.
11. Pin 11 (Bst): Bootstrap capacitor connection.
12. Pin 12 (SDA): Serial data input for control.
13. Pin 13 (SCL): Serial clock input.
14. Pin 14 (CS): Chip select input.
15. Pin 15 (Sns): Voltage sense input.
This device is widely used in switched-mode power supply designs.

The L4978D is manufactured by STMicroelectronics, a global semiconductor company. STMicroelectronics specializes in providing a wide range of products, including microcontrollers, analog ICs, sensors, and power management solutions. The company serves various industries, including automotive, industrial, telecommunications, and consumer electronics. Founded in 1987, STMicroelectronics is known for its innovation and commitment to sustainability, with a strong focus on developing energy-efficient and environmentally friendly technologies. Their products are widely used in applications ranging from automotive systems to smart home devices.

The L4978D is a high-voltage switching regulator primarily used in power supply applications. Its application areas include DC-DC converters, battery chargers, and industrial power supplies. It is suitable for driving motors, LED drivers, and other power-intensive devices where efficiency and thermal performance are crucial. Additionally, it can be used in telecommunications equipment and automotive power systems.

The L4978D chip is a high-voltage, high-current linear voltage regulator. Equivalent products include the LM317, LM1084, and LM1085, depending on specific voltage and current requirements. For similar functionality, consider the LT1084 or MIC29302. Always verify specifications for exact compatibility.