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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 500MA 6-DFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：5.1V
- Voltage Dropout (Max)：0.4V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：50 µA
- Current - Supply (Max)：200 µA
- PSRR：65dB ~ 62dB (1kHz ~ 10kHz)
- Control Features：Enable, Power Good
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：6-VDFN Exposed Pad
- Supplier Device Package：6-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LD39050PUR is an adjustable low-dropout linear voltage regulator manufactured by STMicroelectronics. It delivers a maximum output current of 500 mA with an input voltage range spanning from 1.5 V to 5.5 V. The device features a typical dropout voltage of 200 mV at full load and maintains a very low quiescent current of 20 µA under no-load conditions. Output voltage tolerance is specified at ±2% at 25 °C, with an adjustable range from 0.8 V to 4.5 V in 100 mV steps. It operates within a temperature range of -40 °C to +125 °C and utilizes a DFN-6 surface-mount package.
Feature Summary
- Ultra-low dropout voltage capability ensures efficient power regulation even with minimal input-to-output differentials.
- Extremely low quiescent current consumption extends battery life in portable electronic devices.
- Integrated enable logic control allows for effective power management through shutdown modes.
- Built-in protection mechanisms include constant current limiting and thermal shutdown for system safety.
Applications
- Mobile phones
- Hard disk drives
- Battery-powered systems
Procurement Notes
Verify the specific suffix against official datasheets to confirm pinout and electrical characteristics. Ensure compatibility with ceramic output capacitors as required for stability. Confirm RoHS compliance status prior to integration into final assemblies.
Selection Notes
Select this component when designing circuits requiring high efficiency with minimal voltage headroom. It is suitable for applications demanding precise voltage regulation with low noise. Consider the DFN-6 package constraints for thermal dissipation and PCB layout requirements.
Part Context
This part belongs to the LD39050 series of low-quiescent-current LDO regulators. The series is designed for space-constrained, battery-operated applications. It shares core architectural features with other members but differs in output configuration and packaging options.
Replacement Considerations
Consult official substitution lists for verified alternatives. Generic equivalents may not match the specific quiescent current or dropout voltage profiles.
