Description:Switching Voltage Regulators USB BC1.2 5-V 3.5-A output, 36-V input synchronous step-down converter with client mode support 32-VQFN -40 to 125
A good PCB layout for the TPS25846QWRHBRQ1 should include a solid ground plane, a separate power plane for the input voltage, and a thermal relief pattern on the exposed pad to facilitate heat dissipation. Additionally, the device should be placed near a thermal pad or a heat sink to improve thermal performance.
The input capacitor should be selected based on the input voltage ripple requirement, output current, and operating frequency. A general rule of thumb is to choose a capacitor with a capacitance value of at least 10uF and a voltage rating of at least 1.5 times the input voltage. X5R or X7R ceramic capacitors are recommended due to their low ESR and high reliability.
The TPS25846QWRHBRQ1 can deliver up to 3A of output current, but this is dependent on the input voltage, output voltage, and ambient temperature. It's essential to check the device's thermal performance and power dissipation to ensure reliable operation.
The TPS25846QWRHBRQ1 has a built-in overcurrent protection feature that can be enabled by connecting the OCSET pin to a resistor divider network. The resistor values should be chosen to set the overcurrent threshold to the desired value. Additionally, the device also has a thermal shutdown feature that will turn off the device if the junction temperature exceeds 150°C.
The EN (enable) pin is used to turn the device on or off. When the EN pin is pulled high, the device is enabled, and when it's pulled low, the device is disabled. The EN pin can be connected to a logic signal or a switch to control the device's operation. It's essential to ensure that the EN pin is properly biased to prevent unwanted device operation.
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TPS25846QWRHBRQ1 Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
