The ATL431LI-Q1 is used as a reference voltage to help regulate a supply voltage off an LDO. By adjusting the cathode voltage, the output voltage of the LDO can vary. The TPS7B4250-Q1 is a voltage-tracking LDO with an adjustable pin which needs a precise reference voltage to change the regulate output voltage.
|DESIGN PARAMETER||EXAMPLE VALUE|
|Input Voltage||4 V to 40 V|
|ADJ Reference Voltage||2.500 V–18 V|
|Output Voltage||2.500 V–18 V|
|Output Current Rating||50 mA|
|Output Capacitor Range||1 µF to 50 µF|
|Output Capacitor ESR Range||1 mΩ to 20 Ω|