NCV1009ZG

Overview

The NCV1009ZG is a precision trimmed 2.5 V shunt regulator diode manufactured by ON Semiconductor. It features an initial tolerance of +/-5.0 mV and a wide operating current range with low dynamic impedance. The device includes a third terminal for reference voltage adjustment, allowing calibration of system errors within a +/-5.0% range. Designed for automotive applications, it supports an extended operating temperature range from -40°C to +125°C. The component is available in a lead-free TO-92-3 package.

Feature Summary

• Precision on-chip trimming minimizes voltage tolerance and temperature drift
• Third terminal enables external adjustment of the reference voltage
• Low dynamic impedance enhances versatility across varying load conditions

Applications

• Automotive systems requiring extended temperature operation
• Calibration of system errors via adjustable reference
• Pin-to-pin replacement for LT1009CZ and LM136Z-2.5

Procurement Notes

Verify that the specific order corresponds to the NCV1009ZG variant, which denotes the TO-92-3 package configuration. Confirm compliance with automotive qualification standards if the application demands AEC-Q101 certification or similar reliability requirements. Ensure the supplier provides documentation confirming the lead-free status and the presence of the third trim terminal, as these are critical differentiators for this specific part number compared to non-automotive equivalents.

Selection Notes

Select the NCV1009ZG when a fixed 2.5 V reference with high accuracy is required alongside the ability to fine-tune the output voltage for system calibration. This component is suitable for designs needing direct interchangeability with legacy parts like the LT1009 without modifying the external trim network. Consider its automotive-grade temperature rating for harsh environments where standard commercial grade devices may fail.

Part Context

The NCV1009 series belongs to ON Semiconductor's portfolio of precision voltage references designed for high-reliability applications. The 'NCV' prefix indicates automotive qualification, distinguishing it from commercial variants. The ZG suffix specifically identifies the TO-92-3 through-hole package, ensuring compatibility with existing PCB footprints used in older designs while offering improved Pb-free packaging options.

Replacement Considerations

The NCV1009Z can serve as a pin-to-pin replacement for the LT1009CZ and LM136Z-2.5, often eliminating the need for external trim networks.