MAX6331 Datasheet | Maxim Integrated

MAX6330/MAX6331 Precision Shunt Regulators with Reset in SOT23-3 General Description The MAX6330/MAX6331 bine a precision shunt regulator with a power-on reset function in a single SOT23-3 package. They offer a low-cost method of operating small microprocessor (µP)-based systems from high-voltage sources, while simultaneously protecting µPs from powerup, power-down, and brownout conditions. Both active-low (MAX6330) and active-high (MAX6331) push/pull output versions are available. The output voltage has ±1.5% tolerance. The MAX6330/MAX6331 operate over a wide shunt current range from 100µA to 50m A, and offer very good transient immunity. A 3-pin SOT23 package allows for a significant reduction in board space and improves reliability pared to multiple-IC/discrete solutions. These devices have a minimum order increment of 2,500 pieces. Applications - - Controllers - - Household Appliances - - Intelligent Instruments - - Critical µP and µC Power Monitoring - - Portable/Size-Sensitive Equipment Typical Operating Circuit VIN RS VSHUNT ILOAD ISHUNT SHUNT MAX6330 MAX6331 RESET (RESET) CL 0.1µF- µP RESET INPUT - SEE THE SECTION CHOOSING THE BYPASS CAPACITOR (CL) Features - - 100µA to 50m A Shunt Current Range - - Low Cost - - 3-Pin SOT23 Package - - ±1.5% Tolerance on Output Voltage - - Three Shunt Voltages Available: 5V, 3.3V, 3.0V - - Precision Power-On Reset Threshold: 1.5% Tolerance Available with Either RESET (MAX6331) or RESET (MAX6330) Outputs - - 140ms Reset Timeout Period- No External ponents...