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Product Detailed Parameters
- Description：IC REG LIN 0.8V 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)：0.8V
- 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 LDK120C08R is a fixed-output linear low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 0.8V with a maximum 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 a 100mA load. Key electrical specifications include a maximum quiescent current of 100µA, which reduces to less than 1µA in shutdown mode. The regulator offers a power supply rejection ratio (PSRR) of 55dB across the 120Hz to 10kHz frequency range. It is housed in a SOT-323-5 surface-mount package and supports operation over a temperature range of -40°C to +125°C.
Feature Summary
- Ultra-low noise performance suitable for sensitive analog circuits
- Logic-controlled electronic shutdown function for power management
- Internal protection against short-circuit currents and thermal overload
Applications
- Low-power battery-operated portable devices
- RF and wireless communication modules requiring clean power rails
- IoT sensor nodes and smart home electronics
Procurement Notes
Verify the specific suffix 'C08R' corresponds to the 0.8V fixed output variant when sourcing. Confirm the package type is SOT-323-5 as listed in official datasheets. Ensure compatibility with ceramic output capacitors, typically 1µF, as specified for stability. Check RoHS3 compliance status if required by your manufacturing standards.
Selection Notes
Select this component when a stable 0.8V rail is needed from inputs up to 5.5V. It is ideal for applications prioritizing low noise and minimal static current consumption. Consider the 200mA current limit and ensure it meets the load requirements. The enable pin allows for system-level power control integration.
Part Context
This part belongs to the LDK120 series of low-dropout regulators designed for ultra-low noise and low quiescent current applications. The series includes adjustable versions and other fixed voltage options ranging from 0.8V to 3.5V. All variants share similar protection features and package options, including SOT23-5L and DFN6.
Replacement Considerations
Direct substitutes may include other 200mA LDOs with 0.8V output and SOT-323-5 packaging. Verify that replacement parts match the PSRR, noise specifications, and enable logic requirements. Ensure thermal and current limits are comparable for direct pin-to-pin interchangeability.
