Micromonitor Chip, Single, 5.5V, Soic-8; Reset Threshold Voltage ? Min:-; Reset Threshold Voltage ? Max:-; Reset Threshold Voltage – Nom:4.37V; No. Of Monitored Voltages:1Monitors; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V Rohs Compliant: Yes |Analog Devices DS1232LPS-2+

DS1232LPS-2+ – 4.37V/4.62V Voltage Supervisor IC – Analog Devices

Ensure system stability and reliable power-up sequencing with the DS1232LPS-2+ voltage supervisor IC from Analog Devices. This precision MicroMonitor™ device safeguards embedded systems against unstable power conditions by generating a controlled reset signal, preventing data corruption and erratic operation during voltage fluctuations. Ideal for mission-critical applications requiring dependable power management.

Key Features

• Type: Simple Reset/Power-On Reset Supervisor
• Voltage Threshold: Monitors 4.37V or 4.62V (selectable)
• Output Configuration: Open Drain or Push-Pull (user-selectable)
• Reset Polarity: Active High or Active Low (programmable)
• Reset Timeout: Adjustable/Selectable delay period
• Operating Temp: 0°C to 70°C (commercial range)
• Package: 8-SOIC surface-mount (3.90mm width)

Technical Specifications

This single-voltage supervisor IC continuously monitors the V_CC supply line. When voltage dips below the preset threshold (4.37V or 4.62V), it asserts a reset signal to the host microcontroller. The reset signal remains active for an adjustable period after voltage normalization to ensure stable system initialization. Housed in a compact 8-SOIC package, it features flexible output drive (open-drain or push-pull) and reset polarity options for design versatility. Device status is “Active” with a base product number DS1232LP.

Common Applications

• Industrial control system power monitoring
• Embedded computing and IoT device reset circuits
• Medical equipment power sequencing
• Automotive infotainment systems
• Server/network hardware protection

About Analog Devices

Analog Devices Inc. (ADI), including Maxim Integrated technologies, is a global leader in high-performance analog and mixed-signal solutions. With over 50 years of innovation, ADI sets industry standards for precision, reliability, and signal processing excellence across automotive, industrial, and communications sectors.

ADI’s rigorous quality controls and extensive testing protocols ensure components meet critical performance requirements in extreme environments. Their MicroMonitor™ series exemplifies this commitment, providing robust power management solutions trusted by engineers worldwide for system integrity and fail-safe operation.

About Voltage Supervisor ICs

Voltage supervisor ICs (reset ICs) are essential power management components that monitor system voltage levels and initiate controlled resets during power anomalies. They prevent microcontrollers from executing code under unstable voltage conditions, mitigating data corruption, hardware damage, and unpredictable behavior.

These devices are crucial in applications where power integrity directly impacts safety or functionality, such as medical devices, industrial controllers, and automotive systems. By ensuring processors only operate within specified voltage ranges, supervisor ICs significantly enhance system reliability and reduce field failures.

Packaging Options

Available in protective Tube packaging for secure handling and automated assembly. Contact PCX for reel packaging alternatives or volume-specific options.

Frequently Asked Questions

Q: What’s the difference between the 4.37V and 4.62V thresholds?
A: The dual thresholds allow customization for 5V or 3.3V systems. Use 4.62V for 5V rail monitoring, and 4.37V for tighter 3.3V tolerance.

Q: Can this IC monitor multiple voltage rails?
A: No, the DS1232LPS-2+ monitors a single voltage rail. For multi-rail supervision, consider ADI’s multi-channel supervisor ICs.

Q: Is the reset timeout period fixed or configurable?
A: The reset timeout is externally adjustable using a capacitor, providing design flexibility for different system requirements.

Q: What advantages does the push-pull output offer over open-drain?
A: Push-pull outputs drive both high and low states without external pull-up resistors, simplifying board design and improving signal integrity.

Q: Why use a voltage supervisor instead of microcontroller brown-out detection?
A: Dedicated supervisors offer faster response times, precise thresholds, and independent operation during processor instability, providing an extra layer of protection.

Q: Is this IC suitable for automotive applications?
A: This commercial-grade (0°C to 70°C) variant suits controlled environments. For automotive use, select ADI’s AEC-Q100 qualified supervisors with extended temperature ranges.

Disclaimer: Product images are representational. Refer to the datasheet on PCXCo.com for exact specifications.

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