The recommended input capacitor value is 1uF to 10uF, depending on the input voltage and output current requirements. A larger capacitor value can help reduce input ripple and improve output stability.
To ensure the LP2901DRE4 operates within its SOA, monitor the input voltage, output current, and junction temperature. Make sure the input voltage is within the recommended range (7V to 40V), output current is below the maximum rating (1A), and junction temperature is below 125°C.
The EN pin is used to enable or disable the regulator. When the EN pin is pulled high (above 1.4V), the regulator is enabled, and when it's pulled low (below 0.4V), the regulator is disabled. This pin can be used to implement power sequencing or to turn off the regulator when not in use.
The output voltage of the LP2901DRE4 is adjustable using an external resistor divider network. The output voltage can be calculated using the formula: Vout = 1.24V x (1 + R1/R2), where R1 and R2 are the resistors in the divider network.
The thermal shutdown temperature of the LP2901DRE4 is typically around 150°C to 170°C. When the junction temperature exceeds this threshold, the regulator will shut down to prevent damage.
LP2901DRE4 datasheet
by Texas Instruments
