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Product Detailed Parameters
- Description：IC REG LINEAR 2.9V 200MA 6-DFN
- 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)：2.9V
- 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：6-XFDFN
- Supplier Device Package：6-DFN (1.2x1.3)
- Grade：-
- Qualification：-
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Overview
The LDK120PU29R is a fixed-output linear low-dropout regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 2.9V 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 overcurrent and thermal protection, logic-controlled enable functionality, and is housed in a compact 6-DFN (1.2x1.3mm) surface-mount package.
Feature Summary
- Ultra-low dropout voltage operation for efficient power management
- Logic-controlled electronic shutdown for extended battery life
- Integrated short-circuit constant current limiting and thermal protection
Applications
- Low-power battery-powered consumer electronics
- Portable devices requiring stable voltage regulation
- Embedded systems utilizing ceramic output capacitors
Procurement Notes
Verify the specific suffix 'PU29R' against official STMicroelectronics documentation to confirm the exact 2.9V fixed output configuration. Ensure compatibility with the required 6-DFN footprint and check RoHS3 compliance status prior to integration. Confirm that the supply chain source provides valid traceability for this active component.
Selection Notes
Select this component when a precise 2.9V rail is required from a 1.9V to 5.5V input source. It is suitable for designs prioritizing minimal quiescent current consumption and small board space constraints. Verify that the application load does not exceed the 200mA limit and that the thermal environment supports the DFN package's dissipation capabilities.
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 offers various fixed output voltages and adjustable versions, packaged in SOT23-5L, SOT323-5L, and DFN6 formats. It targets portable electronics where power efficiency and size are critical design parameters.
Replacement Considerations
Consult the official LDK120xx datasheet for alternative part numbers offering different fixed output voltages or adjustable configurations within the same family. Verify pinout and thermal characteristics before substituting with other manufacturers' LDOs.
