The minimum input voltage required for the LP2951ACN to operate is 3.5V, but it's recommended to have at least 1V of headroom above the output voltage to ensure proper regulation.
The output voltage of the LP2951ACN can be calculated using the formula: Vout = Vref x (1 + R1/R2), where Vref is the internal reference voltage (1.235V), R1 is the resistance between the output and the adjust pin, and R2 is the resistance between the adjust pin and ground.
The maximum output current of the LP2951ACN is 50mA, but it's recommended to derate the output current based on the input voltage and ambient temperature to ensure reliable operation.
To ensure stability of the LP2951ACN output voltage, it's recommended to use a minimum output capacitance of 2.2uF, and to place the capacitor close to the output pin. Additionally, the input capacitor should be at least 1uF to filter out noise and ripple.
The LP2951ACN is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage based on the ambient temperature to ensure reliable operation. Additionally, the device should be mounted on a heat sink to dissipate heat effectively.
LP2951ACN datasheet
by Texas Instruments
