Manufacturer Part Number

TCM809SVNB713

Description

Single-channel voltage supervisor IC monitors system voltage and asserts a reset when voltage drops below 2.93V. Features a simple push-pull output in a tiny SOT-23-3 package for space-limited PCBs. Suitable for reliable power-on reset in a wide range of electronics.

Specifications

Monitors one voltage rail. Threshold set at 2.93V. Output is push-pull (totem pole), active low. Reset timer minimum is 140ms. Works in –40°C to +125°C temperature range. RoHS3 and REACH compliant. Packaged in SOT-23-3, TO-236-3, SC-59 standard. MSL 1 (unlimited shelf life). Part number TCM809SVNB713, Microchip Technology.

Device Structure

IC contains an internal precision voltage detector, comparator, and reset output driver. Housed in SOT-23-3 surface mount (3-pin) with clear marking for pin identification. No external timing capacitor required.

Performance Characteristics

Fast response to undervoltage conditions with minimal propagation delay. Stable operation across industrial temperature range. Output compatible with CMOS and TTL logic. Low quiescent current. Debounced active-low reset output ensures clean system reset.

Application Environments

Used in microcontrollers, embedded systems, consumer electronics, industrial control, battery-powered devices, and any circuit needing reliable power-on-reset or brown-out detection. Suitable for automotive, industrial, and general electronics.

Selection Guidelines

Select based on monitored voltage rail and required threshold (2.93V for this model). Match output type (push-pull) and active reset logic (active low) to system requirements. Make sure operating temperature and package style fit application needs. For single-rail voltage monitoring only.

Usage Considerations

Confirm supply voltage does not exceed part limits. Place close to monitored load for best response. Avoid noise on monitored line. Observe correct polarity and mounting orientation. Handle using standard IC handling and surface mount precautions.

Potential Equivalent/Replacement Models

Alternative voltage supervisor models with comparable features may be available from Microchip and other manufacturers. Options include TCM809 series with different threshold voltages and output logic. Microchip TCM810, Maxim MAX809/MAX810, ON Semiconductor NCP302/303, and Texas Instruments TPS3839 may offer similar functionality. Always verify threshold voltage, output type, and electrical parameters for compatibility. For exact cross or no suitable equivalent, contact the Ariat-Tech sales team for detailed support and recommendations.

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