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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 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)：3.3V
- 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 LDK120PU33R is a fixed-output low dropout linear regulator manufactured by STMicroelectronics. It provides a stable 3.3 V output with a maximum continuous 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 0.3 V at full load. It incorporates an enable control pin for power management and includes built-in overcurrent and thermal overload protection. The component utilizes a compact 6-DFN (1.2 x 1.3 mm) surface-mount package and supports operation across a temperature range from -40 °C to +125 °C.
Feature Summary
- Ultra-low quiescent current consumption optimized for battery-powered applications
- Integrated enable pin allows precise system power sequencing and shutdown
- Built-in thermal and current limiting safeguards against operational faults
Applications
- Portable consumer electronics requiring efficient power regulation
- Battery-operated devices needing extended runtime
- Embedded systems utilizing low-voltage logic interfaces
Procurement Notes
Verify the specific suffix 'PU33R' to confirm the 3.3 V fixed output, 200 mA rating, and 6-DFN packaging configuration. Ensure compatibility with standard surface-mount assembly processes. Confirm that the selected variant meets the required environmental specifications for your target application before finalizing procurement orders.
Selection Notes
Select this regulator when a compact footprint and high efficiency are critical for low-power designs. It is suitable for replacing older linear regulators in space-constrained portable devices. Consider its low noise performance and fast transient response characteristics when powering sensitive analog or RF circuits within the specified input voltage limits.
Part Context
This component belongs to the LDK120 series of ultra-low-dropout linear regulators designed for minimal power consumption. The series offers various fixed output voltages and current ratings to support diverse embedded applications. Manufactured using advanced BiCMOS technology, these devices provide reliable performance in harsh environments while maintaining a small physical profile ideal for modern miniaturized electronics.
Replacement Considerations
Compatible substitutes include LDK120PU30R (3.0 V output), LDK120PU32R (3.2 V output), and LDK120PU33R variants with different suffixes indicating identical electrical parameters but potentially distinct packaging or tape-and-reel configurations.
