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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1.2A PPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：4.9V
- Voltage Dropout (Max)：0.6V @ 1.2A
- Current - Output：1.2A
- Current - Quiescent (Iq)：70 µA
- Current - Supply (Max)：400 µA
- PSRR：53dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Reverse Current
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Supplier Device Package：PPAK
- Grade：-
- Qualification：-
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Overview
The LDL112PT-TR is a low-dropout linear regulator (LDO) manufactured by STMicroelectronics, designed to deliver up to 1.2 A of output current. It operates with an input voltage range from 1.6 V to 5.5 V and features a typical dropout voltage of 300 mV at a 1 A load. The device incorporates reverse current protection and maintains a low quiescent current of 35 µA typ. at no-load, with a maximum of 1 µA in the off state. It is housed in a TO-252-5 (DPAK) surface-mount package and supports junction temperatures from -40°C to 125°C.
Feature Summary
- Reverse current protection prevents backflow when input voltage drops below output voltage
- Very low dropout voltage ensures efficient regulation under high load conditions
- Low quiescent current minimizes power consumption during idle or off states
Applications
- Battery-powered portable devices requiring efficient voltage regulation
- Embedded systems needing stable supply rails with minimal noise
- Industrial control modules operating within wide temperature ranges
Procurement Notes
Verify the exact output voltage variant required, as the LDL112 series includes multiple fixed voltage options. Confirm package integrity for the TO-252-5 form factor. Check for end-of-life status, as some distributors list this part as obsolete; substitute parts may be available through official channels. Ensure compatibility with your PCB layout for DPAK mounting.
Selection Notes
Select this component when a 1.2 A LDO with reverse protection is needed. Compare dropout characteristics against load requirements. Verify input voltage does not exceed 5.5 V. Consider thermal performance in the TO-252-5 package for your application's power dissipation needs.
Part Context
The LDL112 series belongs to STMicroelectronics' portfolio of low-quiescent-current LDOs. This specific part, LDL112PT-TR, is the tape-and-reel version of the LDL112PT, optimized for automated surface-mount assembly. It shares core electrical specifications with other variants in the LDL112 family but differs in packaging and shipping format.
Replacement Considerations
Official substitutes include other LDL112 variants with different fixed output voltages if the voltage level matches the design requirement. Cross-reference with ST's official substitution guide for compatible replacements if this specific part is discontinued.
