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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 1.2A 8-SOIC
- 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：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The LDL112DR is a low-dropout linear regulator from STMicroelectronics, part of the LDL112 series. It provides a maximum output current of 1.2 A with a typical dropout voltage of 300 mV at full load. The device features very low quiescent current, typically 35 μA at no-load, and supports an input voltage range from 1.6 V to 5.5 V. It offers adjustable output voltages ranging from 800 mV to 5 V with a tolerance of ±2.0% at 25 °C. Key specifications include a shutdown current lower than 1 μA, reverse current protection, and compatibility with 1 μF ceramic output capacitors.
Feature Summary
- Logic-controlled electronic shutdown for ultra-low power consumption
- Reverse current protection to prevent backflow
- Internal current limit and thermal protection mechanisms
- Stabilized operation with small ceramic output capacitors
Applications
- Low power battery-powered applications
- Portable consumer electronics
- Embedded systems requiring efficient power management
Procurement Notes
Verify the specific package variant, as the LDL112 series is available in DFN6 (2x2 mm), DFN6 (3x3 mm), SO8-batwing, and PPAK packages. Confirm that the required output voltage setting matches the adjustable configuration or fixed options available. Ensure the design accounts for the 1 μF minimum ceramic capacitor requirement for stability. Check RoHS compliance status for the specific manufacturing batch.
Selection Notes
Select this component when high efficiency and low standby current are critical for battery life. The adjustable output voltage allows flexibility in system design. Consider the thermal performance under maximum load conditions due to the linear regulation topology. The reverse current protection feature is essential if the output may be driven by an external source higher than the input.
Part Context
The LDL112 belongs to STMicroelectronics' family of low-quiescent current LDO regulators designed for portable devices. It complements other PMIC solutions by offering a simple, robust linear regulation option with minimal external components. The series emphasizes energy efficiency through low dropout characteristics and advanced shutdown capabilities.
Replacement Considerations
Check for direct pin-compatible alternatives within the same LDL112 family, such as different package variants like LDL112DTR or LDL112PVR. Verify that any substitute maintains the 1.2 A current rating and compatible output voltage range.
