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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 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)：2.5V
- 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 LDK320AM25R is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a nominal output voltage of 2.5 V with a maximum load current capability of 200 mA. The device operates from an input voltage range spanning 2.5 V to 18 V and features a typical dropout voltage of 100 mV at a 100 mA load. It incorporates logic-controlled electronic shutdown functionality, reducing quiescent current to below 1 μA in the off state. The component includes comprehensive protection mechanisms against short circuits, thermal overload, and safe operating area violations.
Feature Summary
- Logic-controlled electronic shutdown for ultra-low power consumption
- High power supply rejection ratio ensuring stable operation
- Integrated short-circuit, thermal, and SOA protections
- Compatible with ceramic output capacitors
Applications
- Digital signal controllers
- Television systems
- Blu-ray and DVD players
- Personal computers
- Industrial equipment
Procurement Notes
Verify the specific suffix 'A' indicates the ±0.5% output voltage tolerance variant rather than the standard ±2% version. Confirm the package designation matches the SOT-23-5L form factor required for your PCB layout. Ensure the ordering code corresponds to the tape-and-reel configuration if automated assembly is planned. Cross-reference the manufacturer part number directly with official STMicroelectronics documentation to avoid counterfeit components.
Selection Notes
Select this regulator when precise voltage accuracy is critical due to its tighter tolerance specifications compared to standard variants. Consider the SOT-23-5L package constraints regarding thermal dissipation capabilities under heavy loads. Evaluate the input voltage headroom requirements against the specified dropout characteristics. Verify that the application environment remains within the industrial temperature range limits defined in the datasheet.
Part Context
This component belongs to the LDK320 family of high-accuracy, high PSRR voltage regulators designed for low-power applications. The family offers various fixed and adjustable output voltages across different packages. The LDK320AM25R specifically targets designs requiring strict voltage regulation stability and efficient power management in compact portable or industrial electronics.
Replacement Considerations
LDK320AM25RCT
FAQ
What distinguishes the LDK320A series from the standard LDK320?
The LDK320A series offers a tighter output voltage tolerance of ±0.5% at 25 °C, whereas the standard LDK320 has a tolerance of ±2%.
How does the enable pin function affect power consumption?
Driving the enable pin low activates the shutdown mode, reducing the total current consumption to less than 1 μA.
