LD39300DT18-R

$0.54

Description：IC REG LINEAR 1.8V 3A DPAK
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)

SKU:2e62023716af Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 1.8V 3A DPAK
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：6V
Voltage - Output (Min/Fixed)：1.8V
Voltage - Output (Max)：-
Voltage Dropout (Max)：0.4V @ 3A
Current - Output：3A
Current - Quiescent (Iq)：5 µA
Current - Supply (Max)：2.5 mA
PSRR：65dB ~ 55dB (120Hz ~ 1kHz)
Control Features：Enable
Protection Features：Over Current, Over Temperature
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package：DPAK
Grade：-
Qualification：-

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LD39300DT18-R

Overview

The LD39300DT18-R is a fixed-output ultra-low dropout linear regulator manufactured by STMicroelectronics. It provides a guaranteed output current of 3A with an output voltage of 1.8V. The device operates from an input supply ranging from 2.5V to 6V and features a typical dropout voltage of 40mV at 600mA load and 200mV at 3A load. Quiescent current is typically 1.2mA in ON mode, dropping to a maximum of 1µA in OFF mode. It includes logic-controlled electronic shutdown, internal current and thermal limits, and maintains stability with ceramic capacitors.

Feature Summary

Ultra-low dropout voltage performance for efficient power delivery
Logic-controlled electronic shutdown for low standby consumption
Internal current and thermal protection mechanisms
Stable operation with ceramic output capacitors

Applications

Microprocessor power supply
DSPs power supply
Post regulators for switching supplies
High efficiency linear regulator

Procurement Notes

Verify the specific part number LD39300DT18-R against official manufacturer documentation to confirm availability and exact specifications. Ensure that the DPAK package type matches the design requirements. Check for any end-of-life notices or obsolescence warnings associated with this component before finalizing procurement plans.

Selection Notes

Select this regulator when a fixed 1.8V output is required with high current capability up to 3A. Consider the input voltage range of 2.5V to 6V and the need for external ceramic capacitors for stability. Evaluate thermal management needs based on the junction-to-ambient thermal resistance and expected power dissipation under load conditions.

Part Context

The LD39300 series comprises ultra-low dropout BICMOS voltage regulators available in various fixed output voltages and adjustable versions. The DT suffix indicates the DPAK package option. This family is designed for low voltage microprocessor and memory applications, offering fast dynamic response and low noise characteristics suitable for sensitive digital circuits.