Specifications
| Attribute | Value |
| Package / Case | Tube |
| Part Status | Obsolete |
| Function | Step-Up, Step-Down |
| Output Configuration | Positive or Negative |
| Topology | Buck, Boost |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 1.24V |
| Voltage - Output (Max) | 40V (Switch) |
| Current - Output | 1.5A (Switch) |
| Frequency - Switching | 100Hz ~ 100kHz |
| Synchronous Rectifier | No |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole |
Overview
Description
The MC34063AP is a versatile, monolithic DC-DC converter designed for step-up, step-down, and inverting applications. This integrated circuit (IC) includes a range of components needed for voltage regulation, simplifying the design process for power supply circuits. With an operating voltage range of 3V to 40V, it can deliver up to 1.5A output current, making it suitable for various applications.
Key features of the MC34063AP include a built-in switch, internal temperature compensation, current limiting, and a frequency operation of up to 100 kHz. It also has an adjustable output voltage using an external resistor divider network, which allows for flexibility in different design requirements.
The IC is commonly used in battery-powered devices, automotive electronics, and other applications requiring efficient voltage conversion. Its cost-effectiveness and integration capabilities make it a popular choice among engineers. However, external components like inductors, capacitors, and diodes are needed to complete the circuit, which can affect the overall efficiency and size of the power supply design.
Key features of the MC34063AP include a built-in switch, internal temperature compensation, current limiting, and a frequency operation of up to 100 kHz. It also has an adjustable output voltage using an external resistor divider network, which allows for flexibility in different design requirements.
The IC is commonly used in battery-powered devices, automotive electronics, and other applications requiring efficient voltage conversion. Its cost-effectiveness and integration capabilities make it a popular choice among engineers. However, external components like inductors, capacitors, and diodes are needed to complete the circuit, which can affect the overall efficiency and size of the power supply design.
Equivalent
Equivalent products for the MC34063AP chip include:
1. LM2575 - A step-down voltage regulator.
2. MC33063A - Similar functionality with slight differences in specifications.
3. NCP3063 - Improved switching regulator with a wider input voltage range.
4. SG3524 - A versatile switching regulator controller.
5. TL497A - A general-purpose DC-DC converter.
These chips can serve a similar purpose in applications involving voltage regulation and DC-DC conversion, though specifics may vary slightly in functionality and specifications.
1. LM2575 - A step-down voltage regulator.
2. MC33063A - Similar functionality with slight differences in specifications.
3. NCP3063 - Improved switching regulator with a wider input voltage range.
4. SG3524 - A versatile switching regulator controller.
5. TL497A - A general-purpose DC-DC converter.
These chips can serve a similar purpose in applications involving voltage regulation and DC-DC conversion, though specifics may vary slightly in functionality and specifications.
Features
The MC34063AP is a versatile DC-DC converter IC that offers a range of features suitable for various power supply applications. Key features include:
1. Wide Input Voltage Range: It supports input voltages from 3V to 40V, making it adaptable for different power sources.
2. Internal Power Switch: The IC includes a built-in switching transistor capable of driving up to 1.5A, facilitating efficient energy conversion.
3. Adjustable Output Voltage: It can produce step-up (boost), step-down (buck), or inverting configurations, allowing for output voltages that are adjustable via external components.
4. Switching Frequency: Capable of operating at a switching frequency up to 100 kHz, which can be set using external timing components.
5. Current Limiting: Features built-in current limiting for protection against overcurrent conditions, enhancing reliability.
6. Thermal Shutdown: Includes thermal protection to prevent damage from overheating.
7. Low Standby Current: Offers low quiescent current, which is advantageous for battery-powered devices.
These features make the MC34063AP a flexible choice for designing efficient and cost-effective power supply circuits.
1. Wide Input Voltage Range: It supports input voltages from 3V to 40V, making it adaptable for different power sources.
2. Internal Power Switch: The IC includes a built-in switching transistor capable of driving up to 1.5A, facilitating efficient energy conversion.
3. Adjustable Output Voltage: It can produce step-up (boost), step-down (buck), or inverting configurations, allowing for output voltages that are adjustable via external components.
4. Switching Frequency: Capable of operating at a switching frequency up to 100 kHz, which can be set using external timing components.
5. Current Limiting: Features built-in current limiting for protection against overcurrent conditions, enhancing reliability.
6. Thermal Shutdown: Includes thermal protection to prevent damage from overheating.
7. Low Standby Current: Offers low quiescent current, which is advantageous for battery-powered devices.
These features make the MC34063AP a flexible choice for designing efficient and cost-effective power supply circuits.
Pinout
The MC34063AP is an integrated circuit used primarily for DC-DC conversion tasks. It features an 8-pin configuration with the following pin functions:
1. Switch Collector (Switch): This is the output that connects to the inductor and is responsible for switching the current.
2. Switch Emitter (Ground): Provides the ground return path for the internal switch.
3. Timing Capacitor (Timing Cap): This pin is used to set the oscillator frequency with an external capacitor.
4. GND (Ground): The common ground pin for the IC.
5. Comparator Inverting Input (Feedback): This pin is used to sense the output voltage and maintain regulation through feedback.
6. VCC (Input Voltage): Supplies the primary input voltage to the IC.
7. Ipk Sense: Used to set the peak current limit for the switch.
8. Driver Collector (Driver): Provides output to drive an external transistor if needed.
The MC34063AP is versatile and can be configured for buck, boost, or inverting power supply applications.
1. Switch Collector (Switch): This is the output that connects to the inductor and is responsible for switching the current.
2. Switch Emitter (Ground): Provides the ground return path for the internal switch.
3. Timing Capacitor (Timing Cap): This pin is used to set the oscillator frequency with an external capacitor.
4. GND (Ground): The common ground pin for the IC.
5. Comparator Inverting Input (Feedback): This pin is used to sense the output voltage and maintain regulation through feedback.
6. VCC (Input Voltage): Supplies the primary input voltage to the IC.
7. Ipk Sense: Used to set the peak current limit for the switch.
8. Driver Collector (Driver): Provides output to drive an external transistor if needed.
The MC34063AP is versatile and can be configured for buck, boost, or inverting power supply applications.
Manufacturer
The MC34063AP is manufactured by STMicroelectronics, a global semiconductor company. STMicroelectronics designs, develops, manufactures, and markets a wide range of semiconductor products, including integrated circuits and discrete devices. The company serves various markets, such as automotive, industrial, personal electronics, communication equipment, and computer peripherals. It is known for its expertise in analog and mixed-signal ICs, power management, sensors, and microcontrollers, among other semiconductor technologies.
Application
The MC34063AP is a versatile DC-DC converter IC commonly used in a variety of power conversion applications. Its application areas include:
1. Step-Up (Boost) Converters: Increasing a lower input voltage to a higher output voltage.
2. Step-Down (Buck) Converters: Reducing a higher input voltage to a lower output voltage.
3. Voltage Inverters: Converting a positive input voltage to a negative output voltage.
4. Battery Chargers: Efficiently charging batteries by adjusting voltage levels.
5. Power Supply Solutions: Designing compact and cost-effective power supplies for consumer electronics, automotive systems, and industrial equipment.
6. LED Drivers: Providing stable current for LED lighting applications.
These applications benefit from the MC34063AP's integration of a switching regulator, reference, and comparator within a single package.
1. Step-Up (Boost) Converters: Increasing a lower input voltage to a higher output voltage.
2. Step-Down (Buck) Converters: Reducing a higher input voltage to a lower output voltage.
3. Voltage Inverters: Converting a positive input voltage to a negative output voltage.
4. Battery Chargers: Efficiently charging batteries by adjusting voltage levels.
5. Power Supply Solutions: Designing compact and cost-effective power supplies for consumer electronics, automotive systems, and industrial equipment.
6. LED Drivers: Providing stable current for LED lighting applications.
These applications benefit from the MC34063AP's integration of a switching regulator, reference, and comparator within a single package.
Package
The MC34063AP is a DC-DC converter IC available in an 8-pin Dual In-line Package (DIP-8). It is designed for use in step-up, step-down, and voltage-inverting applications, providing a versatile solution for voltage regulation tasks in various electronic circuits.
