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Product Detailed Parameters
- Description：IC REG LINEAR 3V 200MA 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)：18V
- Voltage - Output (Min/Fixed)：3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.35V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：90 µA
- Current - Supply (Max)：100 µA
- PSRR：88dB ~ 48dB (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：-
- Qualification：-
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Overview
The LDK320M30R is a fixed-output linear voltage regulator from STMicroelectronics, providing a nominal 3V output with a maximum load current of 200mA. It operates within an input voltage range of 2.5V to 18V and features a typical dropout voltage of 100mV at 100mA. The device includes logic-controlled electronic shutdown, reducing off-mode current to less than 1μA. Electrical characteristics include a quiescent current of up to 90μA and high power supply rejection ratio (PSRR) of 88dB at 120Hz. It incorporates short-circuit current limiting, thermal protection, and over-current protection, ensuring stability with ceramic capacitors.
Feature Summary
- Logic-controlled electronic shutdown for ultra-low standby consumption
- High power supply rejection ratio for effective noise filtering
- Integrated short-circuit, thermal, and over-current protections
- Compatible with low-ESR ceramic output capacitors
Applications
- Digital Signal Controllers (DSC)
- Television systems
- Blu-ray and DVD players
- Personal computers and peripherals
- Industrial control equipment
Procurement Notes
Verify the specific suffix M30R corresponds to the SOT-23-5L package and fixed 3V output configuration. Confirm RoHS compliance status and environmental declarations via official manufacturer documentation before finalizing procurement specifications.
Selection Notes
Select this component when a stable 3V rail is required from varying input sources between 2.5V and 18V. The low dropout characteristic supports battery-powered designs where headroom is limited. Ensure adequate thermal management is provided given the junction-to-ambient resistance in the SOT-23-5L package.
Part Context
This part belongs to the LDK320 family of low-dropout regulators designed for high accuracy and performance. The series offers various fixed and adjustable output voltages, catering to diverse power management needs in portable and industrial electronics while maintaining small form factors.
Replacement Considerations
Consult official STMicroelectronics substitution guides for verified alternatives. Cross-reference pinouts and electrical parameters carefully if considering non-ST manufacturers.
FAQ
Is the LDK320M30R compatible with ceramic output capacitors?
Yes, the device is specifically stabilized and compatible with ceramic capacitors, requiring a minimum capacitance of 1μF.
How does the enable pin function affect power consumption?
Driving the enable pin low activates the shutdown mode, reducing the total input current to less than 1μA.
