圖片僅供參考
RT7257BHZSP
+物料清單IC REG BUCK ADJ 3A 8SOP
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製造商Richtek美國股份有限公司。
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製造商部分 #RT7257BHZSP
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有存貨4364
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正品保證
規格
| 屬性 | 價值 |
| Part Status | Active |
| Base Product Number | RT7257 |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4.5V |
| Voltage - Input (Max) | 18V |
| Voltage - Output (Min/Fixed) | 0.8V |
| Voltage - Output (Max) | 12V |
| Current - Output | 3A |
| Frequency - Switching | 1.2MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package | 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Supplier Device Package | 8-SOP-EP |
| Packaging | Cut Tape (CT), Tape & Reel (TR) |
概述
Description
Key features of the RT7257BHZSP include a wide input voltage range, usually from 4.5V to 18V, and an adjustable output voltage, typically from 0.6V up to the input voltage. It also offers a high switching frequency, which enhances efficiency and allows the use of smaller external components, contributing to a compact design. The converter includes protections such as over-current, under-voltage lockout, and thermal shutdown to ensure reliability and safety in various operating conditions.
The RT7257BHZSP is appreciated for its low quiescent current, which extends battery life in portable applications, and its ability to maintain high efficiency across different load conditions.
Equivalent
Features
1. Wide Input Voltage Range: It supports a broad input voltage range, making it versatile for various power sources.
2. High Efficiency: With its synchronous rectification, it offers high efficiency, which is crucial for battery-powered applications.
3. Output Current: Capable of delivering a substantial output current, suitable for powering different loads.
4. Compact Package: The device is available in a compact package, ensuring space-saving on the PCB.
5. Integrated MOSFETs: It includes built-in MOSFETs, reducing the need for external components and simplifying the design process.
6. Protection Features: The RT7257BHZSP comes with several protection mechanisms like over-current protection, over-temperature protection, and under-voltage lockout, enhancing reliability.
7. Adjustable Output: It allows for adjustable output voltages, providing flexibility for various application requirements.
These features make the RT7257BHZSP suitable for consumer electronics, industrial equipment, and other applications requiring efficient and reliable power conversion.
Pinout
1. VIN: Input voltage supply pin. This pin takes the input from the power source.
2. SW: Switch node pin. Connects to the inductor and is part of the power conversion stage.
3. BOOT: Bootstrap pin. Provides a higher voltage to the high-side gate driver.
4. GND: Ground pin. Common ground for the IC and the power circuitry.
5. FB: Feedback pin. Used to set the output voltage by connecting a resistor divider from the output.
6. EN: Enable pin. Turns the converter on or off.
7. COMP: Compensation pin. Connects to external compensation components to stabilize the control loop.
8. VCC: Internal supply voltage for the IC's internal circuitry.
This pin configuration helps the RT7257BHZSP deliver efficient power conversion in compact electronic designs.
Manufacturer
Application
1. Consumer electronics, such as smartphones and tablets, where efficient power management is crucial.
2. Industrial applications requiring reliable power conversion in compact spaces.
3. Telecommunications equipment, ensuring stable power supply to critical components.
4. Networking devices, contributing to efficient energy use in routers and switches.
5. Portable devices, where battery life extension is essential.
6. Automotive electronics, supporting power conversion needs in vehicles.
These applications benefit from the device's high efficiency, compact form factor, and ability to deliver stable output under varying load conditions.