MAX6433UK+T

Overview

The MAX6433UK+T is a low-power, single-level battery monitor manufactured by Analog Devices Inc. (Maxim Integrated). It operates within an extended temperature range of -40°C to +85°C and utilizes a SOT-23-5 surface-mount package. The device features a fixed threshold voltage of 3.3V with a reset delay time of 260ms. It draws a typical supply current of 3.5µA and supports a maximum power supply voltage of 6V. The output type is active low open drain, providing a clear indication when the monitored voltage drops below the specified level.

Feature Summary

• Provides single low-battery output indication for monitoring battery conditions
• Features internal hysteresis to prevent output oscillation during threshold transitions
• Operates with ultra-low supply current suitable for portable applications

Applications

• Monitoring single lithium-ion cells
• Monitoring multicell alkaline power supplies
• Monitoring NiCd/NiMH power supplies

Procurement Notes

Verify component authenticity through authorized channels due to potential availability constraints. Confirm RoHS compliance status and specific manufacturing lot details prior to integration. Ensure storage conditions adhere to moisture sensitivity level requirements. Validate pinout compatibility with existing PCB layouts. Review datasheet revisions for any functional updates or packaging changes.

Selection Notes

Select this component for applications requiring simple, low-cost battery depletion detection. The fixed 3.3V threshold suits systems operating at standard logic levels. Consider the open-drain output capability for flexible interfacing with various microcontroller inputs. Evaluate the 3.5µA quiescent current against strict power budget constraints in standby modes.

Part Context

This part belongs to the MAX6427–MAX6438 family of low-power, single/dual-level battery monitors. These devices are designed to indicate three distinct battery states: good, weak, and empty. The MAX6433 variant specifically provides a single low-battery output indicator, distinguishing it from dual-output counterparts in the series.

Replacement Considerations

MAX6434UK+T

FAQ

Does the MAX6433UK+T include manual reset functionality?

No, the MAX6433UK+T does not feature a manual reset input; it operates automatically based on the monitored voltage level.

What is the output configuration of the MAX6433UK+T?

The device provides an active low, open-drain output signal that asserts when the supply voltage falls below the threshold.