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Product Detailed Parameters
- Description：IC REG LINEAR 1.1V 300MA SOT23-5
- 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)：1.1V
- 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 (TJ)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LDK130M11RY is a fixed-output low-dropout linear voltage regulator from STMicroelectronics, designed for automotive applications. It provides a fixed output voltage of 1.1 V with a maximum output current of 300 mA. The device operates within an input voltage range of 1.9 V to 5.5 V and features a typical dropout voltage of 400 mV at full load. It exhibits a quiescent current of 60 µA and offers power supply rejection ratio (PSRR) of 55 dB across the 120 Hz to 10 kHz frequency band. The component is qualified under AEC-Q100 standards and functions reliably in junction temperatures ranging from -40 °C to +125 °C.
Feature Summary
- Automotive-grade reliability certified by AEC-Q100 qualification.
- Ultra-low noise performance suitable for sensitive analog circuits.
- Integrated enable logic control for efficient power management.
- Built-in short-circuit constant current limiting and thermal protection.
Applications
- Post-regulation stages in automotive electronic systems
- Power supplies for microprocessor units in vehicles
- Low-noise biasing for sensor interfaces
Procurement Notes
Verify the specific suffix 'M11' confirms the 1.1 V fixed output voltage during procurement. Ensure the ordering code includes 'RY' to confirm the SOT-23-5L package type. Confirm AEC-Q100 Grade 1 compliance requirements match the target application environment. Validate that the design accommodates the specified thermal dissipation limits for the chosen operating conditions.
Selection Notes
Select this component when a precise 1.1 V rail is required for automotive electronics. The low quiescent current makes it suitable for battery-powered subsystems where standby consumption must be minimized. The wide input voltage range allows direct connection to varying vehicle bus voltages. Ensure the load current does not exceed 300 mA to maintain regulation within specified dropout parameters.
Part Context
This part belongs to the LDK130 series of low-dropout regulators manufactured by STMicroelectronics. The series is specifically engineered for automotive environments, offering high precision and robustness. The LDK130 family utilizes advanced BCD technology to achieve low noise and high PSRR, distinguishing it from standard industrial regulators.
Replacement Considerations
Check for other LDK130 variants with different output voltages if 1.1 V is not strictly required. Verify pin compatibility with alternative SOT-23-5 packages before substitution. Ensure any replacement maintains AEC-Q100 certification for automotive use.
