ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 500MA 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)：0.4V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：50 µA
- Current - Supply (Max)：200 µA
- PSRR：65dB ~ 62dB (1kHz ~ 10kHz)
- Control Features：Enable, Power Good
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：6-VDFN Exposed Pad
- Supplier Device Package：6-DFN (3x3)
- Grade：-
- Qualification：-
Download product information
Overview
The LD39050PU33R is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 3.3V output with a maximum continuous current of 500mA. The device operates within an input voltage range of 1.5V to 5.5V and features a typical dropout voltage of 200mV at full load. Quiescent current is specified at 50µA, with a maximum supply current of 200µA. It includes power good and enable control features, along with overcurrent, thermal, and short-circuit protection. The component is housed in a compact 6-DFN (3x3mm) package with a bare pad.
Feature Summary
- Ultra-low quiescent current consumption for extended battery life
- High power supply rejection ratio ensuring clean output voltage
- Integrated safety protections including thermal shutdown and current limiting
- Compatible with small ceramic output capacitors
Applications
- Battery-powered mobile devices
- Portable hard disk drives
- General-purpose low-noise power regulation
Procurement Notes
Verify the specific suffix PU33R confirms the 3.3V fixed output variant. Confirm the 6-DFN 3x3mm package matches the design footprint. Ensure RoHS compliance requirements are met for the target market. Check for any recent manufacturing changes or packaging updates via official notices before finalizing orders.
Selection Notes
Select this component when a fixed 3.3V rail is required with minimal static power draw. It is suitable for space-constrained designs due to the small DFN footprint. Consider the 500mA current limit against peak load demands. Verify that the input voltage remains within the 1.5V to 5.5V operational window under all conditions.
Part Context
This part belongs to the LD39050 series of ultra-low noise LDO regulators. The series offers various fixed and adjustable output voltages. Other variants include different output levels such as 2.5V or adjustable versions like the LD39050PUR. All share similar electrical characteristics and protection features.
Replacement Considerations
Direct substitutes within the same family include other LD39050xx variants with compatible packages. Verify pinout compatibility if replacing with different output voltage options from the same series.
