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Product Detailed Parameters
- Description：IC REG LIN 1.2V 200MA 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)：1.2V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.3V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：100 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 LDK120C12R is a fixed-output linear low-dropout regulator (LDO) manufactured by STMicroelectronics. It provides a fixed output voltage of 1.2V with a maximum continuous output current of 200mA. The device operates within an input voltage range of 1.9V to 5.5V and features a typical dropout voltage of 100mV at 100mA load. Quiescent current is specified at a maximum of 100µA, reducing to less than 1µA in shutdown mode. It includes logic-controlled enable functionality, overcurrent protection, and thermal shutdown. The component is housed in a SOT-323-5 surface-mount package and supports operation across a temperature range of -40°C to +125°C.
Feature Summary
- Ultra-low dropout voltage performance suitable for battery-powered applications
- Logic-controlled electronic shutdown function for power management
- Internal short-circuit constant current limiting and thermal protection
Applications
- Low-power battery-operated devices
- Always-on automotive body and interior functions
- Industrial applications requiring stable regulation from unregulated DC rails
Procurement Notes
Verify the specific suffix 'C12R' against the manufacturer's official datasheet to confirm the fixed 1.2V output voltage and SOT-323-5 packaging configuration. Ensure compatibility with ceramic output capacitors as required for stability. Confirm RoHS compliance status and moisture sensitivity level prior to integration into the production line.
Selection Notes
Select this component when a fixed 1.2V rail is required with minimal quiescent current consumption. It is appropriate for designs needing high PSRR and low noise in compact spaces. Consider the SOT-323-5 footprint constraints and ensure the input voltage remains within the 1.9V to 5.5V operational window for proper regulation.
Part Context
This part belongs to the LDK120 series of ultra-low dropout voltage regulators from STMicroelectronics. The series offers various current ratings and output configurations, including adjustable versions. The LDK120C12R specifically denotes the fixed 1.2V variant optimized for low-noise and low-power efficiency in portable and industrial electronics.
Replacement Considerations
Consult the official LDK120xx datasheet for direct pin-compatible alternatives within the same family, such as other fixed voltage variants or adjustable versions, ensuring electrical parameters match the design requirements.
