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Product Detailed Parameters
- Description：IC REG LINEAR 1.2V 1.2A 8-SOIC
- 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)：1.2V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.6V @ 1.2A
- Current - Output：1.2A
- Current - Quiescent (Iq)：70 µA
- Current - Supply (Max)：400 µA
- PSRR：57dB (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：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The LDL112D12R is a low-dropout linear regulator from STMicroelectronics, part of the LDL112 series. It provides a fixed 1.2 V output with a maximum current of 1.2 A. The device operates with an input voltage range of 1.6 V to 5.5 V and features a typical dropout voltage of 300 mV at 1 A load. Quiescent current is typically 35 µA at no-load, reducing to less than 1 µA in shutdown mode. It includes reverse current protection, internal current limit, and thermal protection. The component is housed in an 8-SOIC package and supports operation from -40 °C to +125 °C.
Feature Summary
- Reverse current protection prevents backflow when input voltage drops below output voltage.
- Logic-controlled enable pin allows for electronic shutdown with ultra-low standby consumption.
- Compatible with small ceramic output capacitors, simplifying board layout.
Applications
- Battery-powered portable devices requiring efficient power management
- Embedded systems needing stable 1.2 V logic supply rails
- Low-power consumer electronics with strict quiescent current limits
Procurement Notes
Verify the specific suffix 'D' indicates the 8-SOIC package variant distinct from DFN packages. Confirm RoHS compliance status via official datasheets before integration. Ensure input voltage does not exceed 5.5 V to prevent damage. Check thermal dissipation requirements for 1.2 A loads in SO-8 packaging.
Selection Notes
Select this model for applications requiring a fixed 1.2 V output in an 8-pin surface-mount package. Compare against adjustable variants if flexible voltage settings are needed. Consider DFN packages for smaller footprints if thermal performance allows. Verify compatibility with 1 µF ceramic output capacitors for stability.
Part Context
The LDL112 series offers high-current LDOs with low quiescent current and reverse current protection. This specific part belongs to the fixed-output subset, providing precise voltage regulation without external resistors. It targets battery-operated equipment where efficiency and space savings are critical design constraints.
Replacement Considerations
LDL112PU10R is listed as a similar alternative by distributors, though it specifies a 1.0 V output. Verify exact voltage matching and package compatibility before substitution. No direct official cross-reference for 1.2 V in SO-8 is confirmed in public documents.
