LD39030DTPU33R

$0.33

Description：IC REG LINEAR 3.3V 300MA 4-DFN
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:5bc9b4d62acc Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 3.3V 300MA 4-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)：0.33V @ 300mA
Current - Output：300mA
Current - Quiescent (Iq)：40 µA
Current - Supply (Max)：-
PSRR：80dB ~ 55dB (1kHz ~ 100kHz)
Control Features：Enable
Protection Features：Over Current, Over Temperature, Soft Start
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：4-XDFN Exposed Pad
Supplier Device Package：4-DFN (1x1)
Grade：-
Qualification：-

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LD39030DTPU33R

Overview

The LD39030DTPU33R is a fixed-output low dropout linear regulator manufactured by STMicroelectronics. It provides a stable 3.3V output with a maximum current capacity of 300mA. The device operates within an input voltage range of 1.5V to 5.5V and features a typical quiescent current of 40µA. Key electrical parameters include a maximum dropout voltage of 0.33V at full load, power supply rejection ratios ranging from 80dB to 55dB across specified frequencies, and an operating temperature range spanning -40°C to +125°C.

Feature Summary

Ultra-low quiescent current consumption for extended battery life in portable applications
Integrated enable logic control allowing efficient shutdown modes
Built-in protection mechanisms including thermal limiting and short-circuit current limiting
Stabilized operation compatible with small ceramic output capacitors

Applications

Battery-powered consumer electronics requiring low standby current
Portable devices utilizing single-cell lithium-ion or alkaline batteries
Embedded systems needing regulated 3.3V logic supplies
Noise-sensitive circuits benefiting from low dropout performance

Procurement Notes

Verify the complete part number LD39030DTPU33R against official STMicroelectronics documentation to confirm the specific 3.3V fixed output variant. Ensure compatibility with the 4-DFN package requirements and check for any recent product change notices regarding manufacturing locations or material compositions before finalizing procurement specifications.

Selection Notes

Select this component when a fixed 3.3V rail is required with minimal static power draw. The 300mA output capability suits moderate load applications. Consider the 4-DFN footprint constraints and verify that the input voltage remains above the minimum threshold while accounting for the dropout voltage under maximum load conditions to ensure stable regulation.

Part Context

This device belongs to the LD39030 series of low dropout regulators designed for high efficiency and low noise. It complements other variants in the family offering different output voltages or current ratings. The series targets applications demanding compact solutions with robust protection features and reliable performance across wide industrial temperature ranges.