TPS3431SDRBR

Overview

The TPS3431SDRBR is a dual-channel, low-power supervisor IC manufactured by Texas Instruments. It provides independent monitoring for two voltage rails with adjustable reset thresholds and timeout periods. The device features an open-drain or push-pull reset output configurable via external resistors. Designed for industrial applications, it operates within a supply voltage range of 1.2V to 5.5V and supports temperatures from -40°C to +125°C. Packaged in a compact 6-SON (2x2) format, it ensures system reliability through precise voltage supervision and customizable timing parameters.

Feature Summary

• Dual-channel voltage supervision with independent threshold adjustment
• Configurable reset output: open-drain or push-pull
• Adjustable reset timeout period via external capacitor
• Operating supply voltage range: 1.2V to 5.5V
• Industrial temperature range: -40°C to +125°C

Applications

• Multi-rail power supply monitoring in industrial control systems
• Voltage supervision for microcontrollers and DSPs
• Battery-powered devices requiring low quiescent current
• Embedded systems needing customizable reset timing

Procurement Notes

Verify the exact suffix 'SDRBR' against the manufacturer's official datasheet to confirm pinout, package dimensions, and electrical specifications. Ensure compatibility with your board layout regarding the 6-SON footprint. Confirm RoHS compliance status if required by your manufacturing standards. Cross-reference the part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when dual-vail supervision is required in a minimal footprint. Compare quiescent current specifications against other supervisors if battery life is critical. Verify that the adjustable threshold range covers your specific rail voltages. Ensure the available external components for setting timeout and thresholds fit within your design constraints.

Part Context

The TPS3431 belongs to Texas Instruments' family of dual-supervisor ICs designed for cost-sensitive and space-constrained applications. It complements single-channel supervisors like the TPS38xx series by offering dual functionality in a small package. This series is commonly used in conjunction with other PMICs to ensure robust system startup and fault detection.

Replacement Considerations

Direct replacements include other dual-supervisor ICs from Texas Instruments such as the TPS3430 or TPS3432, depending on output configuration needs. Check pin-to-pin compatibility before substitution. Alternative manufacturers may offer similar dual-supervisors, but verify threshold accuracy and operating voltage ranges carefully.