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RT8237EZQW
+BOMIC REG CTRLR BUCK PWM WDFN-10
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ManufacturerRichtek USA Inc.
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Mfr. Part #RT8237EZQW
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Datasheet RT8237EZQW DataSheet
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Package WDFN-10
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In Stock6500
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 4.5V ~ 26V |
| Frequency-Switching | 290kHz ~ 430kHz |
| SynchronousRectifier | Yes |
| ClockSync | Yes |
| ControlFeatures | Current Limit, Enable, Phase Control, Power Good, Soft Start |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 10-WFDFN Exposed Pad |
Overview
Description
Key features include a fixed frequency operation for stability, internal compensation to simplify design, and protection mechanisms like over-current protection (OCP), over-voltage protection (OVP), and thermal shutdown to ensure reliability and safety. It supports an external soft-start function to reduce inrush current during startup, and its compact WDFN-10L package aids in minimizing the overall system footprint, making it suitable for space-constrained applications like notebook computers, LCD TVs, and other consumer electronics. The RT8237EZQW is valued for its ease of use, efficiency, and robust performance in delivering regulated power efficiently.
Equivalent
1. Texas Instruments TPS54331: A 3A step-down converter.
2. Microchip MIC29302: A high-current, low-dropout regulator.
3. STMicroelectronics L4973V3.3: A 3.3V step-down switching regulator.
4. ON Semiconductor NCP3170: A high current, PWM step-down converter.
When selecting equivalents, verify the specific requirements like voltage input/output, current rating, and package type to ensure compatibility.
Features
1. Wide Input Voltage Range: Supports a broad range of input voltages, making it suitable for various power sources.
2. Adjustable Output Voltage: Capable of providing precise voltage regulation to meet specific application needs.
3. High Efficiency: Utilizes synchronous rectification to achieve high efficiency, enhancing battery life in portable applications.
4. Compact Package: Comes in a small package, ideal for space-constrained applications.
5. Fast Transient Response: Ensures stable operation under rapid load changes, improving performance in dynamic environments.
6. Protection Features: Includes over-current, over-temperature, and under-voltage lockout protections to safeguard against operational faults.
7. Soft-Start Functionality: Reduces inrush current during startup, minimizing the risk of component stress.
These features make the RT8237EZQW suitable for use in consumer electronics, computer peripherals, and other applications requiring efficient, reliable power conversion.
Pinout
1. VIN: Input voltage supply for the converter.
2. SW: Switch node connected to the inductor, critical for step-down conversion.
3. BOOT: Bootstrap capacitor connection for driving the high-side MOSFET.
4. EN: Enable pin to turn the converter on or off.
5. COMP: Compensation pin for stabilizing the feedback loop.
6. GND: Ground connection for the IC.
7. FB: Feedback pin used to regulate the output voltage.
8. VCC: Internal linear regulator output or external bias input.
9. PGOOD: Power-good indicator that signals when the output voltage is within regulation.
10. SS: Soft-start control to manage inrush current during startup.
These pins work together to enable the RT8237EZQW to efficiently convert a higher input voltage to a lower output voltage, suitable for powering various components in electronic circuits.