Maxim Integrated MAX6746KA16+ Voltage Monitor

The Maxim Integrated MAX6746KA16+ is a compact, low-power voltage monitor designed to provide precise power-supply monitoring for computers, controllers, and intelligent instruments. This microprocessor (µP) supervisory circuit is engineered to maintain system integrity by monitoring the power supply voltage levels and asserting a reset signal to the µP whenever the monitored voltage drops below a predefined threshold.

With its small form factor, the MAX6746KA16+ comes in a space-saving SOT-23 package, making it an ideal choice for space-constrained applications. The device operates over a wide voltage range and features a factory-trimmed reset threshold voltage of 1.575V, ensuring accurate monitoring of VCC without the need for external components.

The MAX6746KA16+ boasts a low supply current of only 5.5µA (typical), which contributes to enhanced system power efficiency. Its reset output is available in both push-pull and open-drain configurations, providing flexibility in interfacing with other system components. The reset signal is guaranteed to remain valid with VCC as low as 1.2V, which is crucial for reliable operation during low-voltage conditions.

This voltage monitor also features a manual reset input, allowing for an external trigger to initiate a system reset. This is particularly useful for system maintenance or in scenarios where a manual restart is necessary. The reset timeout period is internally set to 140ms (min), providing a sufficient delay to ensure system stability during power-up or after a manual reset event.

Key features of the MAX6746KA16+ include:

• Factory-trimmed reset threshold: 1.575V
• Low supply current: 5.5µA (typ.)
• Guaranteed reset valid to VCC = 1.2V
• Manual reset input
• Push-pull or open-drain reset output options
• Preprogrammed reset timeout period: 140ms (min)
• Compact SOT-23 packaging

The MAX6746KA16+ is an essential component for applications requiring reliable voltage monitoring and system stability. Its precision and low power consumption make it a suitable choice for portable devices, embedded systems, and other sophisticated electronic products that demand consistent performance and long battery life.