RT7257BHZSP

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RT7257BHZSP

IC REG BUCK ADJ 3A 8SOP

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사양

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)

개요

Description

The RT7257BHZSP is a synchronous step-down DC-DC converter designed to efficiently convert a higher voltage to a lower voltage in electronic applications. It operates with a wide input voltage range and is capable of delivering a stable output current, making it suitable for a variety of power management applications.
Key features of the RT7257BHZSP include a high switching frequency, which allows for smaller external components and a compact design, enhancing its suitability for space-constrained applications. It also incorporates protection features such as over-current protection and thermal shutdown to ensure reliable operation.
The device is typically used in consumer electronics, industrial systems, and communication devices where efficient power conversion is necessary. The "SP" in its designation often refers to the specific packaging type, which affects its thermal performance and ease of integration onto printed circuit boards.
Overall, the RT7257BHZSP is valued for its efficiency, reliability, and compact form factor, making it a popular choice for engineers designing power supply circuits.

Features

The RT7257BHZSP is a step-down converter (buck converter) designed for efficient voltage regulation. Key features include:
1. Input Voltage Range: It supports a wide input voltage range from 4.5V to 18V, making it versatile for various applications.
2. Output Current: The device can deliver up to 3A of continuous output current, suitable for powering high-performance processors and other demanding components.
3. High Efficiency: With synchronous rectification and a low RDS(ON), the converter achieves high efficiency across a wide load range.
4. Switching Frequency: Operates at a fixed frequency of 500kHz, which helps in reducing the size of external components and ensures fast transient response.
5. Protection Features: Includes over-current protection, thermal shutdown, and under-voltage lockout (UVLO) to ensure robust operation.
6. Compact Package: Available in a compact 8-lead SOP-EP package, facilitating space-constrained designs.
7. Adjustable Output Voltage: The output voltage can be set through external resistors, providing flexibility for different voltage requirements.
These features make the RT7257BHZSP suitable for various applications, including consumer electronics, industrial equipment, and communications devices, where efficient and reliable power conversion is crucial.

Package

The RT7257BHZSP is typically available in a SOT-23-6 package type, which is a small, surface-mount package used for electronic components.

Pinout

The RT7257BHZSP is a synchronous step-down converter. It comes in a 6-pin SOT-23-6 package. Here is a brief description of its pin functions:
1. VIN (Pin 1): Input voltage supply pin.
2. SW (Pin 2): Switching node, connected to the inductor.
3. GND (Pin 3): Ground pin.
4. FB (Pin 4): Feedback pin to monitor output voltage.
5. EN (Pin 5): Enable pin, used to enable or disable the device.
6. BS (Pin 6): Bootstrap pin for driving the high-side MOSFET.
The RT7257BHZSP is typically used in applications requiring efficient voltage conversion, with features like high efficiency, adjustable output voltage, and good load regulation.

Manufacturer

The RT7257BHZSP is manufactured by Richtek Technology Corporation. Richtek is a company that specializes in designing and producing analog IC solutions, including power management integrated circuits (PMICs). Founded in Taiwan, Richtek is known for its innovative and efficient power management products used in a variety of applications, such as consumer electronics, computers, industrial equipment, and communication devices. The company focuses on delivering high-performance, reliable, and cost-effective solutions to meet the needs of its global customers.

Application

The RT7257BHZSP is a step-down DC-DC converter commonly used in consumer electronics, industrial equipment, and telecommunications. Its applications include powering microcontrollers, FPGAs, and ASICs, as well as providing efficient power supply solutions for battery-operated devices. It's ideal for systems requiring high-efficiency voltage regulation and compact power solutions.

Equivalent

The RT7257BHZSP is a DC-DC buck converter. Equivalent products include the TPS62130 from Texas Instruments, the LM2596 from Texas Instruments, the MP1584 from Monolithic Power Systems, and the LTC3630 from Analog Devices. These alternatives offer similar functionality, such as step-down voltage conversion with varying current capacities and efficiency levels, suitable for comparable applications. Always check datasheets for compatibility with your specific requirements.

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