REF35500QDBVRQ1

Overview

The REF35500QDBVRQ1 is an automotive-grade precision series voltage reference from the Texas Instruments REF35-Q1 family. It provides a fixed 5 V output with ±0.05% initial accuracy and a maximum temperature coefficient of 15 ppm/°C across the -40°C to +125°C range. The device operates on a typical quiescent current of 650 nA and supports up to 10 mA sourcing and 5 mA sinking load currents. It features a shutdown mode, noise reduction capabilities via an NR pin, and is housed in a compact SOT-23-6 package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability
• Ultra-low power consumption with typical 650 nA quiescent current
• High precision performance with ±0.05% initial accuracy and low drift
• Integrated enable pin for shutdown control and noise reduction pin for filtering

Applications

• Automotive front camera systems
• Driver monitoring systems
• Battery control units
• Electric power steering applications

Procurement Notes

Verify that the specific part number suffix matches the required output voltage and package configuration. Confirm that the component meets the necessary AEC-Q100 grade requirements for your specific automotive application environment. Ensure compatibility with your PCB layout regarding thermal management and ESD protection measures during assembly.

Selection Notes

Select this component when a fixed 5 V reference is required for automotive sensors or data converters. Consider the low dropout voltage characteristics for battery-powered designs where input voltage may approach the output level. Evaluate the noise reduction pin utility if the application demands lower low-frequency flicker noise than standard specifications provide.

Part Context

This device belongs to the REF35-Q1 family of nanopower, high-precision band-gap references. The family offers various fixed output voltages ranging from 1.2 V to 5.0 V, all sharing similar electrical characteristics and packaging options. The REF35500 variant specifically targets applications requiring a stable 5 V rail within the stringent constraints of automotive electronics.

Replacement Considerations

Other members of the REF35-Q1 family, such as REF35250QDBVRQ1 (2.5 V) or REF35330QDBVRQ1 (3.3 V), share identical pinouts and electrical profiles except for the output voltage. Verify that the system design can accommodate the different reference voltage levels before substituting.