LD59015C30R

Overview

The LD59015C30R is a positive fixed linear voltage regulator from STMicroelectronics, delivering a fixed output of 3.0V with a maximum load current of 150mA. It operates within an input voltage range of 2.4V to 5.5V and features a typical dropout voltage of 150mV. The device includes enable control, overcurrent protection, and thermal overload protection. Key electrical specifications include a quiescent current of 60µA and power supply rejection ratios (PSRR) ranging from 76dB at 1kHz to 54dB at 100kHz. It is housed in a SOT-323-5 surface-mount package and supports an operating temperature range of -40°C to 125°C.

Feature Summary

• Provides stable 3.0V output with high accuracy for sensitive analog circuits
• Features low noise and high PSRR for clean power delivery
• Includes integrated enable pin for power management control
• Offers comprehensive protection against overcurrent and thermal overload

Applications

• Portable battery-powered devices requiring efficient voltage regulation
• RF modules and wireless communication systems needing low-noise power
• Embedded microcontroller systems with strict voltage tolerance requirements
• Sensor interfaces demanding stable reference voltages

Procurement Notes

Verify the specific suffix 'C30R' to confirm the 3.0V fixed output variant, as the LD59015 family offers multiple voltage options. Ensure compatibility with SOT-323-5 footprint during PCB layout. Confirm RoHS3 compliance status if required by your manufacturing standards. Check for any recent Product Change Notifications (PCN) regarding packaging or material updates before finalizing procurement plans.

Selection Notes

Select this component when a fixed 3.0V rail is needed with minimal external components. Its low quiescent current makes it suitable for battery-operated applications where standby power consumption is critical. The high PSRR ensures performance stability in noisy environments. Compare dropout voltage characteristics against other LDOs if input voltage margins are tight. Consider the thermal performance in SOT-323-5 packages for high ambient temperature applications.

Part Context

The LD59015 series represents STMicroelectronics' line of low-dropout linear regulators designed for portable electronics. This specific part belongs to the C30R variant, indicating the 3.0V output version. The series is known for combining low noise with high power supply rejection, making it ideal for RF and audio applications. It shares common protection features and pinouts across the family, simplifying design transitions between different output voltage requirements.

Replacement Considerations

Direct substitutes within the same family include LD59015C15R (1.5V output) and LD59015C18R (1.8V output), provided the system voltage requirement changes. Cross-brand replacements should match the 150mA current rating, SOT-323-5 package, and similar PSRR specifications. Verify that alternative parts support the same input voltage range and offer comparable thermal protection features.