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MIC4576WU
+BOMIC REG BUCK ADJ 3A TO263-5
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Nhà sản xuấtCông nghệ Microchip
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Ông. Phần #MIC4576WU
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Bảng dữ liệu MIC4576WU DataSheet
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Gói TO-263-5
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Có sẵn4862
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Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package / Case | Tube |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4V |
| Voltage - Input (Max) | 36V |
| Voltage - Output (Min/Fixed) | 1.23V |
| Voltage - Output (Max) | 33V |
| Current - Output | 3A |
| Frequency - Switching | 200kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
Tổng quan
Description
Equivalent
1. LM2576 by Texas Instruments
2. L4970A by STMicroelectronics
3. MC34063 by ON Semiconductor (with similar function but different characteristics)
4. L78S by STMicroelectronics (for similar applications but different specs)
Ensure compatibility by checking specific parameters such as input voltage range, output current, and efficiency when selecting a substitute.
Features
1. Output Current: Capable of providing up to 3A of output current.
2. Input Voltage Range: Operates with input voltages from 4V to 34V.
3. Output Voltage: Adjustable output voltage range from 1.23V to 20V.
4. Efficiency: High efficiency, typically over 90%, due to its switching regulator design.
5. Switching Frequency: Operates at a fixed frequency of 200 kHz, which helps in minimizing the external component size.
6. Thermal Protection: Integrated thermal shutdown feature to protect against overheating.
7. Short-Circuit Protection: Built-in protection to prevent damage due to output short circuits.
8. Package: Available in a compact TO-263 surface-mount package for efficient heat dissipation and space-saving on PCBs.
9. Applications: Suitable for a wide range of applications including power supply sources for microcontrollers, industrial equipment, and battery-powered devices.
The MIC4576WU is well-suited for applications requiring efficient voltage conversion with reliable performance and protection features.
Pinout
1. VIN: This is the input voltage pin where the unregulated voltage is supplied.
2. SW (Switch): This pin is connected to the inductor and is used to switch the current through the inductor, contributing to the step-down conversion process.
3. GND: This is the ground pin, serving as the return path for the current.
4. FB (Feedback): This pin is used to set and maintain the output voltage by connecting it to a resistor divider network.
5. ON/OFF: This pin is used to enable or disable the regulator. When driven to a low state, the regulator shuts down, reducing power consumption.
The MIC4576 operates efficiently, making it suitable for various applications requiring a regulated output voltage from a higher input source.