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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 800MA DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：6V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.3V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：2.5 mA
- Current - Supply (Max)：-
- PSRR：-
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- 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 LD39080DT18-R is a BiCMOS ultra low-drop linear regulator manufactured by STMicroelectronics. It provides an 0.8 A guaranteed output current with an input voltage range of 2.5 V to 6 V. The device features a typical dropout voltage of 150 mV at full load and 20 mV at 150 mA. Quiescent current is 1 mA at 0.8 A load, dropping to 1 µA maximum in off mode. Output voltage tolerance is ±1.5% at 25 °C. It operates within a temperature range of -40 °C to +125 °C and includes logic-controlled electronic shutdown, internal current limit, and thermal protection.
Feature Summary
- Ultra low dropout voltage for high efficiency under heavy loads
- Logic-controlled electronic shutdown for power management
- Internal short-circuit and thermal protection mechanisms
- Stable operation with ceramic output capacitors
Applications
- Microprocessor power supply
- DSP power supply
- Post regulators for switching suppliers
- High efficiency linear regulator
Procurement Notes
Verify the specific suffix DT18 against official documentation to confirm the fixed output voltage setting. Confirm package type PPAK availability and check for active production status or obsolescence notices from STMicroelectronics before finalizing procurement plans.
Selection Notes
Select this component when designing systems requiring high current capability with minimal voltage drop across the regulator. Ensure the application utilizes ceramic output capacitors meeting stability requirements. Verify that the input voltage remains within the specified 2.5 V to 6 V range for proper regulation.
Part Context
This part belongs to the LD39080 series of ultra low-drop BiCMOS voltage regulators. The series is designed for applications demanding fast dynamic response and low noise. The LD39080 family supports various output voltages and packages, including the PPAK format used in this specific model.
Replacement Considerations
Consult STMicroelectronics documentation for direct pin-compatible alternatives within the LD39080 series or other LDOs with similar current ratings and dropout characteristics.
