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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 800MA DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：13V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：180 µA
- Current - Supply (Max)：35 mA
- PSRR：72dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
Download product information
Overview
The LD29080DT18R is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 1.8V output with a maximum continuous current of 800mA. The device operates within an input voltage range from 2.5V to 13V and features a typical dropout voltage of 400mV at full load. It incorporates internal current limiting and thermal shutdown protection mechanisms. The component is housed in a DPAK surface-mount package, suitable for applications requiring high accuracy and low ground current.
Feature Summary
- Guarantees up to 800mA output current capability
- Features very low dropout voltage for efficient power regulation
- Includes internal overcurrent and thermal limit protections
Applications
- Post-regulation for switching power supplies
- Battery-powered systems requiring low quiescent current
- Series power supplies for monitors and TVs
Procurement Notes
Verify the specific suffix 'DT18R' to confirm the 1.8V fixed output voltage and DPAK-3 package configuration. Ensure compatibility with the required PCB footprint and thermal management strategy for the TO-252-3 form factor. Confirm RoHS compliance status if required by local regulations before finalizing procurement orders.
Selection Notes
Select this component when a fixed 1.8V rail is needed with moderate current demands up to 800mA. It is suitable for designs prioritizing low dropout performance over ultra-low noise specifications. Consider the thermal dissipation capabilities of the DPAK package relative to the expected ambient temperature and load conditions during system design.
Part Context
This part belongs to the LD29080 series of medium-current, high-accuracy low-dropout regulators. The series offers both fixed and adjustable output options with guaranteed accuracy. The DT18R variant specifically denotes the fixed 1.8V version in the DPAK surface-mount package, distinguishing it from other voltage outputs or package types within the same family.
Replacement Considerations
Direct substitutes include other LD29080 variants with different fixed output voltages (e.g., LD29080DT33R for 3.3V) if the voltage requirement changes. For higher current needs, consider the LD29150 series which shares similar packaging but supports up to 1.5A.
