ISL21010DFH312Z-T

Overview

The ISL21010DFH312Z-T is an obsolete micropower voltage reference IC manufactured by Renesas Electronics Corporation. It provides a fixed 1.25V output with ±0.2% initial accuracy. The device operates from a single supply voltage ranging from 2.2V to 5.5V and features a low dropout voltage of 150mV. It delivers up to 25mA of output current sourcing capability while consuming only 48μA of typical supply current. The component is housed in a compact 3-lead SOT-23 package and supports an operating temperature range of -40°C to +125°C.

Feature Summary

• Precision bandgap voltage reference architecture ensuring stable output performance
• Micropower operation designed for extended battery life in portable applications
• Low dropout characteristic allowing efficient regulation near supply limits
• Compact surface-mount packaging suitable for space-constrained designs

Applications

• Battery management and monitoring systems
• Portable instrumentation devices
• Consumer and medical electronics
• Power regulation circuits requiring low standby voltages

Procurement Notes

Verify the obsolete status of this specific part number before initiating any procurement activities, as availability may be limited to existing stock or last-time buys. Confirm that the 1.25V output voltage aligns precisely with your circuit requirements, as alternative variants within the ISL21010 family offer different fixed voltage options. Ensure compatibility with the SOT-23-3 footprint during PCB layout finalization. Review the datasheet for thermal dissipation constraints under maximum load conditions to prevent overheating in enclosed environments.

Selection Notes

Select this component when a highly accurate 1.25V reference is required alongside minimal quiescent current consumption. The ±0.2% initial accuracy makes it suitable for precision analog-to-digital converter references. Consider the 25mA source capability if driving moderate loads directly without additional buffering. Evaluate the -40°C to +125°C temperature range against your environmental operating conditions to ensure long-term stability across all expected scenarios.

Part Context

This evaluation board kit is associated with the ISL21010 series of voltage references. While the specific IC model ISL21010DFH312Z-T is listed as obsolete, the broader ISL21010 family remains active in various configurations. The series is characterized by its combination of high precision, low power consumption, and small form factor, targeting applications where energy efficiency and accuracy are critical design parameters.

Replacement Considerations

Public confirmed substitute part numbers are not available for this obsolete component. Designers should consult the manufacturer's documentation for recommended newer generations or equivalent products from other vendors that match the electrical specifications and pinout configuration.