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Product Detailed Parameters
- Description：IC REG LIN 1.8V 300MA SOT-323-5
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.4V @ 300mA
- Current - Output：300mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：120 µA
- PSRR：55dB (120Hz ~ 10kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SOT-323-5
- Grade：-
- Qualification：-
Download product information
Overview
The LDK130C18R is a low-dropout linear voltage regulator manufactured by STMicroelectronics, providing a fixed 1.8V output with a maximum current of 300 mA. It operates within an input voltage range of 1.9 V to 5.5 V and features a typical dropout voltage of 100 mV. The device exhibits a low quiescent current of 30 µA and includes logic-controlled electronic shutdown functionality that reduces total current consumption to less than 1 µA. It is stabilized using a ceramic capacitor on the output and offers protection against short circuits and thermal overload.
Feature Summary
- Logic-controlled electronic shutdown for ultra-low power consumption
- Compatible with ceramic output capacitors for stability
- Internal short-circuit constant current limiting and thermal protection
Applications
- Low-power battery-powered applications
- Automotive electronics requiring AEC-Q100 qualification
- Post-regulation tasks in sensitive electronic circuits
Procurement Notes
Verify the specific package type, as the LDK130 series utilizes SOT23-5L, SOT323-5L, and DFN6 configurations. Confirm the suffix 'C' denotes the correct automotive grade or temperature rating variant required for your design. Ensure compatibility with the intended PCB footprint and soldering profile for the selected surface-mount package.
Selection Notes
Select this component when precise post-regulation is needed for sensitive loads following initial voltage conversion stages. It is suitable for designs requiring low noise and high efficiency from battery sources. Consider the available fixed output voltages ranging from 0.8 V to 3.5 V if other voltage levels are required.
Part Context
The LDK130 series comprises low-dropout regulators designed for automotive and general-purpose applications. These devices are characterized by very low dropout voltage, low quiescent current, and low noise. They are available in multiple packages including SOT23-5L, SOT323-5L, and DFN6, supporting a wide range of fixed output voltages.
Replacement Considerations
Other variants within the LDK130 family may serve as substitutes depending on the required output voltage and package preference. Verify that any replacement maintains the same electrical characteristics, particularly the 300 mA output current capability and input voltage range.
