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Product Detailed Parameters
- Description：IC REG LIN 3.2V 300MA 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)：3.2V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.4V @ 300mA
- Current - Output：300mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：120 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 LDK130C32R is a low-dropout linear voltage regulator manufactured by STMicroelectronics, providing a fixed 3.2 V output with a maximum current of 300 mA. It operates within an input voltage range of 1.9 V to 5.5 V and features a typical dropout voltage of 100 mV. The device exhibits a quiescent current of 30 µA and includes logic-controlled shutdown functionality reducing consumption below 1 µA. Packaged in SOT-323-5, it supports ceramic capacitors and offers thermal and short-circuit protection across a -40 °C to +125 °C temperature range.
Feature Summary
- Logic-controlled electronic shutdown for ultra-low power consumption
- Compatible with small ceramic output capacitors
- Integrated short-circuit constant current limiting and thermal protection
Applications
- Low-power battery-powered applications
- Portable consumer electronics
- Battery-operated sensor nodes
Procurement Notes
Verify the specific package variant and output tolerance during procurement. Confirm that the selected component matches the required fixed output voltage of 3.2 V. Ensure compatibility with the intended PCB footprint for the SOT-323-5 package. Check for any specific automotive or industrial qualification requirements if applicable to the final design.
Selection Notes
Select this component for designs requiring minimal quiescent current and stable regulation from single-cell lithium batteries. The low dropout characteristic allows operation even when the input voltage approaches the output level. Consider the thermal performance in high-current scenarios and ensure adequate layout for stability with ceramic capacitors.
Part Context
This part belongs to the LDK130 series of low-noise, low-quiescent current LDO regulators designed for portable devices. The series offers various fixed output voltages and multiple package options including SOT-323-5 and DFN6. It targets applications demanding high efficiency and long battery life in compact form factors.
Replacement Considerations
Direct substitutes include other LDK130 variants with different fixed output voltages (e.g., LDK130C33R) if voltage adjustment is permissible. Cross-reference with similar 300 mA LDOs from other manufacturers only if pin-out and electrical characteristics are identical.
