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Product Detailed Parameters
- Description：IC REG LINEAR 5V 85MA 8-DFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：24V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1V @ 85mA
- Current - Output：85mA
- Current - Quiescent (Iq)：7 µA
- Current - Supply (Max)：8.5 µA
- PSRR：38dB ~ 57dB (1kHz ~ 100kHz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-VDFN Exposed Pad
- Supplier Device Package：8-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LDK715PU50R is a fixed-output linear regulator from STMicroelectronics providing a nominal 5.0 V output with a guaranteed maximum current of 85 mA. It operates within an input voltage range of 4.3 V to 24 V and features a typical dropout voltage of 500 mV at full load. The device maintains a very low quiescent current of 5 µA at full load, reaching up to 8.5 µA at maximum input voltage. It includes internal short-circuit current limiting and thermal protection, ensuring stability with ceramic output capacitors ranging from 0.47 µF to 10 µF.
Feature Summary
- Ultra-low quiescent current operation suitable for battery-powered systems
- High input voltage capability extending up to 24 V
- Integrated short-circuit current limit and thermal shutdown protection
Applications
- Mobile phones
- Industrial applications
- Battery-powered systems
Procurement Notes
Verify the specific package configuration required for your design, as the LDK715 series is available in both SOT23-5L and DFN8 3x3 packages. Confirm that the selected component matches the exact ordering code for the desired voltage and package type. Ensure compliance with RoHS directives and check the latest datasheet revision for any updates to electrical characteristics or pin configurations before finalizing procurement.
Selection Notes
Select this regulator when a wide input voltage range up to 24 V is required alongside low power consumption. The 5.0 V fixed output makes it appropriate for powering digital logic or sensors from higher voltage rails. Consider the thermal resistance of the chosen package (DFN8 vs. SOT23-5L) to ensure junction temperature remains within limits under maximum load conditions.
Part Context
The LDK715PU50R belongs to the LDK715 family of high-voltage, ultra-low quiescent current LDO regulators. This series is designed for low-power industrial and mobile applications. Other variants in the family include different fixed output voltages such as 3.3 V and 4.2 V, all sharing similar electrical characteristics and protection features while offering choices between SOT23-5L and DFN8 3x3 packaging options.
Replacement Considerations
Direct substitutes within the same family include LDK715PU33R (3.3 V) and LDK715PU42R (4.2 V), provided the output voltage requirement differs. For alternative manufacturers, verify compatibility regarding input voltage range, output current capacity, and package footprint.
