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Product Detailed Parameters
- Description：IC REG LINEAR 3.2V 200MA SOT23-5
- 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：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The LDK120M32R is a fixed-output linear voltage regulator from the STMicroelectronics LDK120 series. 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. Key electrical specifications include a maximum quiescent current of 100µA and a shutdown current below 1µA when enabled. The unit offers high power supply rejection ratio (PSRR) of 55dB between 120Hz and 10kHz, ensuring stable performance in low-noise applications.
Feature Summary
- Ultra-low dropout voltage capability for efficient battery-powered operation
- Very low noise characteristics suitable for sensitive analog circuits
- Logic-controlled enable pin allows for effective power management and shutdown modes
Applications
- Low-power battery-operated electronic devices
- Noise-sensitive sensor signal conditioning
- Portable consumer electronics requiring stable voltage rails
Procurement Notes
Verify the specific suffix 'M32R' corresponds to the 3.2V fixed output variant and SOT-23-5 package configuration. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Ensure ordering quantities match distributor reel or cut-tape availability constraints.
Selection Notes
Select this component when a fixed 3.2V rail is required with minimal quiescent current draw. The LDK120 series is appropriate for designs prioritizing low noise and wide input voltage flexibility. Consider the SOT-23-5 footprint constraints and thermal dissipation capabilities under expected load conditions before finalizing the design.
Part Context
This part belongs to the LDK120 family of low-dropout regulators designed for ultra-low power applications. The series distinguishes itself through very low noise profiles and high PSRR, making it distinct from standard LDOs. It complements ST's broader portfolio of PMIC solutions by addressing specific needs in portable and battery-driven systems.
Replacement Considerations
Check for direct cross-references within the LDK120 family offering different output voltages or adjustable versions. Verify pin-out compatibility if substituting with other manufacturers' 200mA LDOs in the SOT-23-5 package.
