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MC34063ABD
+Lista de MateriaisIC REG BUCK BST ADJ 1.5A 8SO
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FabricanteSTMicroeletrônica
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Peça do Fabricante #MC34063ABD
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Ficha Técnica MC34063ABD DataSheet
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Pacote SOIC-8
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Especificações
| Atributo | Valor |
| 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) | 1.25V |
| Voltage - Output (Max) | 38V |
| Current - Output | 1.5A (Switch) |
| Frequency - Switching | 33kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
Visão Geral
Description
The MC34063ABD is equipped with a temperature-compensated reference, voltage comparator, controlled duty cycle oscillator, driver, and high-current output switch. It can deliver output currents up to 1.5A with appropriate external components. The switching frequency of the circuit can be set using external resistors and capacitors, allowing designers to optimize their design for efficiency and space constraints.
Additionally, the MC34063ABD includes built-in protection features such as current limiting and thermal shutdown, enhancing the reliability of the power supply design. Its small form factor and minimal external component requirements make it ideal for compact electronic devices.
Equivalent
1. MC34063A - A similar version with slight variations in package or specifications.
2. MC33063A - Generally interchangeable with similar performance.
3. NTE960 - An alternative with comparable features.
4. SG3524 - A slightly different design but can be used in similar applications.
5. LM2575 - A more modern alternative with integrated features, though not a direct pin-to-pin equivalent.
Always consult datasheets to ensure compatibility in specific applications.
Features
Pinout
1. Switch Collector (SWC): Collector of the internal switching transistor.
2. Switch Emitter (SWE): Emitter of the internal switching transistor, typically connected to the inductor.
3. Timing Capacitor (CT): Sets the oscillator frequency with an external capacitor.
4. Ground (GND): Ground reference for the circuit.
5. Comparator Inverting Input (IN-): Inverting input of the internal comparator, used for voltage regulation.
6. VCC: Supply voltage for the IC.
7. IPK Sense (IPK): Current limit sense pin to set peak current limit with a resistor.
8. Driver Collector (DRC): Drives the base of an external transistor if used, or left open if not.
The MC34063ABD is versatile and commonly used due to its ease of use and low external component count.