DS1833-15

Supervisors Overview

The DS1833-15 is a voltage supervisory circuit from the EconoReset series, designed for power-fail monitoring and automatic reset generation. It features a precision temperature-compensated voltage reference and sensor to maintain an active high reset signal for 350ms after power failure. The device monitors a single input with a threshold voltage of 4.625V. It operates within a supply voltage range of 2.7V to 5.5V and draws a maximum DC supply current of 1.5mA. The component supports through-hole mounting in a TO-92-3 package and functions reliably across an operating temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides automatic reset generation upon detection of power-fail conditions
• Maintains active high reset output for a fixed duration following power loss
• Integrates a precision temperature-compensated voltage reference and sensor

Supervisors Applications

• Power-fail monitoring in embedded systems
• Automatic reset generation for microprocessors
• Voltage supervision in portable electronic devices

Supervisors Procurement Notes

Verify RoHS compliance status as historical documentation indicates non-compliance for certain variants. Confirm package type availability, as the standard version uses TO-92-3 while Z-suffix versions utilize SOT223-3. Check for obsolescence notices, as this product line has been subject to discontinuation announcements by the manufacturer. Ensure the specific suffix matches the required pinout and thermal characteristics for your design.

Supervisors Selection Notes

Select this component when a simple, low-cost supervisor with an active-high output is required. The 4.625V threshold suits 5V logic systems. Consider the 350ms reset delay for system stability requirements. Verify that the through-hole TO-92-3 package fits the PCB layout constraints. Compare against the DS1233A series if lower quiescent current or different output polarity is needed.

Supervisors Part Context

The DS1833-15 belongs to Maxim Integrated's EconoReset family, which offers basic voltage supervision without complex watchdog or battery backup features. It serves as a cost-effective alternative to more sophisticated PMICs for applications requiring only basic power-fail detection and reset assertion. The part is distinct from the DS1833-5, which has a different threshold voltage, and the DS1833Z, which offers a surface-mount package option.

Supervisors Replacement Considerations

The DS1833-5 is a functional substitute with a different threshold voltage (4.625V vs 2.8V). The DS1833Z-15 provides the same electrical performance in a SOT223-3 surface-mount package. For lower current consumption, consider the DS1233A series, though it features an active-low output.