Maxim MAX8840ELT31+

Overview

The MAX8840/MAX8841/MAX8842 ultra-low-noise, low-dropout (LDO) linear regulators are designed to deliver up to 150mA continuous output current. These regulators achieve a low 120mV dropout for 120mA load current. The MAX8840ELT30+ uses an advanced architecture to achieve ultra-low output voltage noise of 11μVRMS and PSRR of 54dB at 100kHz. The MAX8841 does not require a bypass capacitor, hence achieving the smallest PC board area. The MAX8842 output voltage can be adjusted with an external divider. The MAX8840/MAX8841 are preset to a variety of voltages in the 1.5V to 4.5V range. Designed with a p-channel MOSFET series pass transistor, the MAX8840/MAX8841/MAX8842 maintain very low ground current (40μA). The regulators are designed and optimized to work with low-value, low-cost ceramic capacitors. The MAX8840ELT30+ requires only 1μF (typ) of output capacitance for stability with any load. When disabled, current consumption drops to below 1μA. The MAX8840/MAX8841/MAX8842 are available in a tiny 1mm x 1.5mm x 0.8mm μDFN.

Features