AP7372 Low Dropout Regulator

The Diodes AP7372 low dropout (LDO) regulator, with its very low 8 µV_RMS noise and large high frequency power supply rejection-ratio (PSRR), is ideal for power supplies in noise sensitive signal chain blocks like precision ADC/DAC, VCO, medical devices, and instrumentation. This high-V_IN LDO operates from 2.7 V to 20 V, enabling operation in many standard power rail systems. It delivers 200 mA output current with fixed output voltage options of 1.8 V, 2.5 V, 3.3 V, and 5.0 V, and is also available in an adjustable version with a nominal 1.2 V output.

The AP7372’s fixed-output voltages can be adjusted above the nominal value using an external feedback divider. The device supports an adjustable output from V_OUT(NOM) to V_IN (minus the dropout voltage, VDO). It also has excellent line and load transient response with a small 2.2 μF ceramic output capacitor, and it supports adjustable soft start using a small capacitor on the SS pin. The AP7372 is available in the tiny U-WLB1012-6 (Type A1), occupying only 1 mm by 1.2 mm and enabling it to be used in high-power-density applications across a -40°C to +125°C ambient temperature range.