Precision Shunt Regulators with Reset in SOT23-3

 

Part Number	Replacement	Explanation

Description

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The MAX6330/MAX6331 combine 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 power-up, 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 50mA, and offer very good transient immunity.

A 3-pin SOT23 package allows for a significant reduction in board space and improves reliability compared to multiple-IC/discrete solutions. These devices have a minimum order increment of 2,500 pieces.

MAX6330, MAX6331: Typical Operating Circuit Enlarge+

Key Features

• 100µA to 50mA 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 active-low RESET (MAX6330) Outputs
• 140ms Reset Timeout Period-No External Components Required

Applications/Uses

• Controllers
• Critical µP and µC Power Monitoring
• Household Appliances
• Intelligent Instruments
• Portable/Size-Sensitive Equipment