The maximum input voltage that can be applied to the TPS40305DRCR is 18V, but it's recommended to operate within the specified input voltage range of 4.5V to 15V for optimal performance.
To ensure stability, it's essential to follow the recommended PCB layout guidelines, use a sufficient output capacitor (at least 10uF), and add a 1uF capacitor between the VIN and EN pins. Additionally, ensure that the input voltage is within the specified range and the output current is within the recommended range.
The minimum ESR (Equivalent Series Resistance) required for the output capacitor is 0.1 ohms. However, it's recommended to use a capacitor with an ESR of 0.05 ohms or less for optimal performance.
The TPS40305DRCR is rated for operation up to 125°C, but it's essential to consider the derating of the output current and power dissipation at higher temperatures. Ensure that the device is properly heatsinked and the thermal design is adequate for the specific application.
The power dissipation of the TPS40305DRCR can be calculated using the formula: Pd = (VIN - VOUT) x IOUT + (VIN x IQ), where IQ is the quiescent current. Ensure that the calculated power dissipation is within the recommended range to prevent overheating.
TPS40305DRCR datasheet
by Texas Instruments
