LD39015XG12R

Overview

The LD39015XG12R is a fixed-output linear voltage regulator manufactured by STMicroelectronics, providing a stable 1.2V output with a maximum current capacity of 150mA. It operates within an input voltage range of 1.5V to 5.5V and features a typical dropout voltage of 80mV at full load. The device incorporates ultra-low quiescent current characteristics, consuming approximately 50µA during operation and less than 1µA in shutdown mode when enabled. It includes integrated protection mechanisms such as overcurrent limiting and thermal shutdown. The component is housed in a compact SOT-666 surface-mount package and is rated for industrial operating temperatures ranging from -40°C to +125°C.

Feature Summary

• Ultra-low dropout voltage performance ensures efficient power delivery under varying load conditions
• Logic-controlled enable function allows deep sleep mode with minimal standby current consumption
• Integrated short-circuit constant current limiting and thermal protection safeguard the device
• Compatible with small ceramic output capacitors for stable operation in space-constrained designs

Applications

• Low-power battery-powered mobile devices
• Personal digital assistants (PDAs)
• Cordless telecommunication systems
• Portable consumer electronics requiring stable low-voltage rails

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to integration. Check for obsolescence notices as availability may be limited. Ensure storage conditions meet moisture sensitivity level requirements to prevent package damage during soldering processes.

Selection Notes

Select this regulator for applications requiring precise 1.2V regulation with minimal noise and high efficiency. Consider the SOT-666 package constraints for PCB layout. Evaluate input voltage headroom against the specified dropout characteristics. Verify that the load current does not exceed the 150mA limit under all operating conditions.

Part Context

This component belongs to the LD39015 series of low-quiescent-current, low-noise voltage regulators designed for portable electronics. The series offers various fixed output voltages and packaging options to suit different design requirements while maintaining consistent electrical performance standards across the family.

Replacement Considerations

Consult official replacement lists for equivalent functionality. Verify pin compatibility and electrical specifications before substitution.