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TPS54428DDAR
+NomenclatureIC REG BUCK ADJUSTABLE 4A 8SOPWR
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FabricantTexas Instruments
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Pièce fabricant #TPS54428DDAR
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Package HSOP-8
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En stock3935
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Spécifications
| Attribut | Valeur |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | D-CAP2™, Eco-Mode™ |
| ProductStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4.5V |
| Voltage-Input(Max) | 18V |
| Voltage-Output(Min/Fixed) | 0.76V |
| Voltage-Output(Max) | 7V |
| Current-Output | 4A |
| Frequency-Switching | 650kHz |
| SynchronousRectifier | Yes |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 8-PowerSOIC (0.154, 3.90mm Width) |
Présentation
Description
Key features of the TPS54428 include high efficiency across a broad load range, integrated MOSFETs, and advanced protection features like over-current protection, thermal shutdown, and undervoltage lockout. The converter also supports adjustable output voltage, providing flexibility for different application requirements.
The TPS54428DDAR comes in an 8-pin SO PowerPAD package, which enhances thermal performance. Its compact size and robust feature set make it ideal for use in consumer electronics, telecommunications, and industrial applications.
Equivalent
1. LM2675 from Texas Instruments.
2. MP1584 from MPS (Monolithic Power Systems).
3. LM2596 from Texas Instruments.
4. LMR16006 from Texas Instruments.
5. RT8250 from Richtek.
These alternatives may vary in specifications like input voltage range, output current, and efficiency, so it's essential to compare their detailed datasheets to ensure compatibility with specific application requirements.
Features
1. Input Voltage Range: It supports a wide input voltage range of 4.5 V to 18 V, making it suitable for various applications.
2. Output Voltage: The device can be configured to deliver an adjustable output voltage as low as 0.8 V, with precise regulation.
3. Output Current: Capable of supplying up to 4 A of continuous output current, suitable for low to medium power applications.
4. High Efficiency: Utilizes a synchronous buck converter design to achieve high efficiency, reducing heat generation and improving performance.
5. Switching Frequency: Operates at a fixed frequency of 700 kHz, optimizing the balance between efficiency and component size.
6. Protection Features: Includes over-current protection, thermal shutdown, and under-voltage lockout to ensure device reliability.
7. Soft Start: Features a soft-start function to prevent inrush current during startup.
8. Package: Available in an 8-pin SO PowerPAD package, facilitating efficient thermal management.
These features make the TPS54428DDAR suitable for applications such as telecommunications, industrial equipment, and consumer electronics.
Pinout
1. BOOT: Bootstrap capacitor connection for the high-side driver.
2. VIN: Input supply voltage pin, which allows the IC to step down the voltage to the desired output level.
3. SW: Switch node, which connects to the external inductor and provides the switched output signal.
4. GND: Ground pin, common ground connection for the IC.
5. FB: Feedback pin, used to set the output voltage through an external resistor divider.
6. COMP: Compensation pin, used for loop compensation with an external RC network.
7. EN: Enable pin, which turns the device on or off based on the voltage applied.
8. RT/CLK: Resistor Timing/Clock pin, used to set the switching frequency or synchronize to an external clock.
These pins facilitate the efficient operation of the TPS54428, allowing it to regulate output voltage with high performance.