The maximum input voltage that can be applied to the TPS78225DDCR is 6.5V, as specified in the datasheet. However, it's recommended to operate the device within the recommended input voltage range of 2.2V to 5.5V for optimal performance and reliability.
To ensure the stability of the output voltage, it's essential to follow the recommended layout and component selection guidelines provided in the datasheet. This includes using a suitable output capacitor with a minimum capacitance of 2.2uF and an ESR of 1 ohm or less, as well as placing the input and output capacitors close to the device.
The TPS78225DDCR can deliver a maximum output current of 150mA. However, the actual output current capability may be limited by the input voltage, output voltage, and ambient temperature. It's essential to consult the datasheet for the output current vs. input voltage and temperature graphs to determine the maximum output current for a specific application.
The power dissipation of the TPS78225DDCR can be calculated using the formula: Pd = (Vin - Vout) x Iout, where Vin is the input voltage, Vout is the output voltage, and Iout is the output current. Additionally, the junction-to-ambient thermal resistance (RθJA) of the device should be considered to ensure the device operates within the recommended temperature range.
The EN (enable) pin on the TPS78225DDCR is used to enable or disable the device. When the EN pin is pulled high (logic level 1), the device is enabled, and when it's pulled low (logic level 0), the device is disabled. This pin can be used to implement power-saving modes or to control the device's operation in specific applications.
TPS78225DDCR datasheet
by Texas Instruments
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