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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 1.2A 6-DFN
- 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)：1.8V
- 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：6-VDFN Exposed Pad
- Supplier Device Package：6-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LDL112PV18R is a positive, fixed-output low-dropout linear regulator manufactured by STMicroelectronics. It provides a stable 1.8 V output with a maximum current capacity of 1.2 A. The device operates within an input voltage range of 1.6 V to 5.5 V and features a typical dropout voltage of 300 mV at full load. Quiescent current is specified at 70 µA typical, with a maximum supply current of 400 µA. Power supply rejection ratio (PSRR) reaches 57 dB at 1 kHz. The component is housed in a 6-DFN (3x3 mm) package with a bare pad, suitable for surface mount installation across a junction temperature range of -40°C to +125°C.
Feature Summary
- Integrated reverse current protection prevents backflow from output to input
- Logic-controlled enable pin allows electronic shutdown with ultra-low standby consumption
- Internal circuitry provides overcurrent limiting and thermal overload protection
- Compatible with small ceramic output capacitors for stable operation
Applications
- Battery-powered portable consumer electronics
- Low-power embedded systems requiring efficient voltage regulation
- RF modules and wireless communication devices
- Microprocessor power supply rails
Procurement Notes
Verify the complete part number LDL112PV18R against official STMicroelectronics documentation to confirm the fixed 1.8 V output specification. Ensure the selected package variant matches the required 6-DFN footprint. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement integration.
Selection Notes
Select this component when a fixed 1.8 V rail is required with high current capability up to 1.2 A. The low quiescent current makes it suitable for battery-operated designs where efficiency is critical. Verify that the input voltage remains within the 1.6 V to 5.5 V range and that the application benefits from the integrated reverse current protection feature.
Part Context
This device belongs to the LDL112 family of low-dropout regulators designed for low-power applications. The family offers various fixed output voltages and adjustable options, all sharing common features such as reverse current protection and low static current. The PV18R suffix specifically denotes the fixed 1.8 V output version in the DFN6 package.
Replacement Considerations
Other members of the LDL112 family, such as LDL112PV33R for 3.3 V output, may serve as functional substitutes if the voltage requirement differs. Verify package compatibility and electrical specifications before substitution.
