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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1.2A 6-DFN
- 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：6-WFDFN Exposed Pad
- Supplier Device Package：6-DFN (2x2)
- Grade：-
- Qualification：-
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Overview
The LDL112PUR 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 operates with an input voltage range from 1.6 V to 5.5 V and features a low quiescent current of 35 μA typical at no-load. It includes reverse current protection, logic-controlled electronic shutdown with consumption lower than 1 μA, and internal current and thermal limit protections. The output voltage is adjustable, ranging from 800 mV to 5 V, and it is stabilized by a ceramic capacitor of 1 μF. The component is housed in a DFN-6 package and supports operation temperatures 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 efficient system power management via electronic shutdown.
- Compatible with small ceramic output capacitors, simplifying board layout and reducing size.
- Integrated thermal and current limiting safeguards against overload conditions.
Applications
- Low-power battery-powered portable devices
- Embedded systems requiring stable voltage regulation
- Consumer electronics with strict space constraints
Procurement Notes
Verify the specific suffix 'P' indicates the DFN-6 (2x2 mm) package configuration as per STMicroelectronics documentation. Confirm the adjustable output voltage requirements match the external resistor network design. Ensure the application circuit utilizes a ceramic capacitor of at least 1 μF on the output for stability. Check that the input voltage remains within the 1.6 V to 5.5 V operational range during all operating conditions.
Selection Notes
Select this component for applications requiring high efficiency in battery-operated systems due to its low quiescent current. The adjustable output voltage offers flexibility for various logic levels. Consider the DFN-6 package for compact designs. Ensure the thermal environment stays within the specified -40 °C to +125 °C range. Verify that the load current does not exceed the 1.2 A guaranteed limit.
Part Context
The LDL112PUR belongs to the LDL112 family of low-dropout regulators designed for low-power applications. This series emphasizes low static current and reverse current protection, making it suitable for modern portable electronics. The 'PUR' designation specifies the lead-free, halogen-free DFN-6 packaging variant manufactured by STMicroelectronics.
Replacement Considerations
Consult STMicroelectronics official documentation for direct cross-references. Other LDOs with similar 1.2 A output and low IQ may serve as alternatives if package and pinout compatibility are verified. Ensure substitute components support reverse current protection and ceramic capacitor stability.
