LD39100PU25RY

$1.02

Description：IC REG LINEAR 2.5V 1A 6-DFN
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:5937dd5ad7db Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 2.5V 1A 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)：2.5V
Voltage - Output (Max)：-
Voltage Dropout (Max)：0.4V @ 1A
Current - Output：1A
Current - Quiescent (Iq)：50 µA
Current - Supply (Max)：300 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 (TJ)
Mounting Type：Surface Mount
Package / Case：6-VDFN Exposed Pad
Supplier Device Package：6-DFN (3x3)
Grade：Automotive
Qualification：AEC-Q100

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LD39100PU25RY

Overview

The LD39100PU25RY is an STMicroelectronics automotive-grade low-dropout linear regulator providing a fixed 2.5 V output with a maximum current of 1 A. It operates within an input voltage range of 1.5 V to 5.5 V and features a typical dropout voltage of 200 mV at full load. The device exhibits very low quiescent current, consuming 20 µA at no load and 200 µA at 1 A load, while drawing less than 1 µA in shutdown mode. It includes logic-controlled electronic shutdown, short-circuit constant current limiting, and thermal protection. The component is housed in a DFN6 (3x3 mm) package and is qualified according to the AEC-Q100 standard for automotive applications.

Feature Summary

Logic-controlled electronic shutdown function enables deep sleep mode with minimal power consumption
Internal short-circuit constant current limiting and thermal protection mechanisms safeguard against overload conditions
Stable operation guaranteed when paired with ceramic capacitors on both input and output terminals

Applications

Printers
Game consoles
Computer systems
Consumer electronics
Automotive post regulation

Procurement Notes

Verify that the specific part number suffix matches the required automotive qualification grade. Confirm the fixed output voltage specification aligns with the target circuit design requirements before procurement. Ensure compatibility with the specified DFN6 package footprint during PCB layout preparation.

Selection Notes

Select this component for designs requiring high efficiency under low voltage differentials and strict noise constraints. The integrated enable pin allows precise power management control. Verify that external capacitor values meet stability criteria to prevent oscillation during transient load changes.

Part Context

This regulator belongs to the LD39100 series, which offers ultra-low dropout performance and low quiescent current characteristics. The series supports various fixed and adjustable output voltages across industrial and automotive grades, utilizing a compact surface-mount package suitable for space-constrained modern electronic assemblies.