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Product Detailed Parameters
- Description：IC REG LIN 2.9V 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)：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：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SOT-323-5
- Grade：-
- Qualification：-
Download product information
Overview
The LDK120C29R is a low-dropout linear voltage regulator manufactured by STMicroelectronics, designed for low-power applications. It provides a fixed output voltage of 2.9 V with a maximum output current of 200 mA. The device operates within an input voltage range of 1.9 V to 5.5 V and features a typical dropout voltage of 100 mV at 100 mA load. It incorporates a logic-controlled enable function that reduces quiescent current to less than 1 μA in shutdown mode. The regulator includes internal short-circuit current limiting and thermal protection. It is stabilized by a ceramic capacitor and is available in the SOT-323-5 package.
Feature Summary
- Logic-controlled electronic shutdown for ultra-low power consumption
- Stabilized operation with ceramic output capacitors
- Integrated short-circuit constant current limiting and thermal protection
Applications
- Low power battery-powered systems
- Portable consumer electronics
- Battery-operated instrumentation
Procurement Notes
Verify the specific suffix 'C29R' against the official datasheet to confirm the fixed 2.9 V output voltage and SOT-323-5 package configuration. Ensure compatibility with required input voltage ranges and load conditions before integration. Confirm RoHS compliance status and moisture sensitivity level requirements for your manufacturing process.
Selection Notes
Select this component when a fixed 2.9 V rail is required with minimal noise and low standby current. It is suitable for designs prioritizing small footprint via the SOT-323-5 package. Consider the 200 mA current limit and 1.9 V minimum input voltage constraints during system architecture planning.
Part Context
This part belongs to the LDK120 series of low-dropout regulators from STMicroelectronics. The series is characterized by very low quiescent current and low noise, making it distinct from higher-current or high-voltage variants like the LDK320. It targets portable applications requiring efficient power management from single-cell batteries.
Replacement Considerations
Consult the manufacturer's selection guide for alternative fixed voltages or packages within the LDK120 family. Verify pinout compatibility if substituting with other LDOs.
