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Product Detailed Parameters
- Description：IC REG LIN 3.2V 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)：3.2V
- 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：-
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Overview
The LDK120C32R is a fixed-output linear low-dropout regulator (LDO) manufactured by STMicroelectronics. It provides a fixed output voltage of 3.2V 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, reaching up to 0.3V at full load. Quiescent current is specified at a maximum of 60µA during operation and drops below 1µA in shutdown mode. It includes enable logic control, overcurrent protection, and thermal shutdown. The component is housed in a SOT-323-5 surface-mount package and supports operation from -40°C to +125°C.
Feature Summary
- Ultra-low dropout performance suitable for battery-powered applications
- Logic-controlled electronic shutdown for extended standby life
- Integrated short-circuit constant current limiting and thermal protection
Applications
- Low-power battery-operated consumer electronics
- Always-on automotive body and interior functions
- Portable devices requiring stable regulation with minimal quiescent current
Procurement Notes
Verify the specific suffix 'C32R' corresponds to the 3.2V fixed output and SOT-323-5 tape-and-reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications before finalizing procurement orders.
Selection Notes
Select this component when a fixed 3.2V rail is required with minimal footprint. Ensure the application input voltage remains within the 1.9V to 5.5V range. Verify that the load current does not exceed 200mA and that ceramic capacitors are used for stability as per datasheet recommendations.
Part Context
This part belongs to the LDK120 series of ultra-low dropout regulators designed for low noise and low consumption. The series offers various fixed output voltages and adjustable versions, catering to diverse power management needs in compact electronic designs while maintaining high efficiency under light loads.
Replacement Considerations
Check for direct pin-compatible alternatives within the same LDK120 family offering different fixed voltages or packages. Verify electrical parameter compatibility if substituting with other manufacturers' LDOs.
