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Product Detailed Parameters
- Description：IC REG LINEAR 1.2V 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)：15V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.2V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：5 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：0°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 LD1117DT12TR is a fixed-output positive linear low-dropout regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 1.2V with a maximum continuous output current of 800mA. The device supports an input voltage range up to 15V and operates within a temperature range of 0°C to 125°C. Key electrical specifications include a typical dropout voltage of 1.2V at full load, a quiescent current of 5mA, and a power supply rejection ratio (PSRR) of 75dB at 120Hz. It is housed in a surface-mount DPAK package.
Feature Summary
- Integrated thermal overload and short-circuit current limiting protection mechanisms
- Low quiescent current consumption for efficient power management
- High power supply rejection ratio suitable for noise-sensitive applications
Applications
- Battery-powered equipment requiring stable low-voltage regulation
- Post-regulation stages for switching power supplies
- General-purpose linear power supply circuits
Procurement Notes
Verify the specific suffix 'DT12' confirms the 1.2V fixed output and DPAK package configuration. Confirm RoHS3 compliance status as indicated in official documentation. Ensure the ordering part number matches the required tape-and-reel quantity or cut-tape availability from authorized distributors.
Selection Notes
Select this component when a precise 1.2V rail is required with moderate current demands up to 800mA. Consider the thermal dissipation capabilities inherent to the DPAK package relative to the expected voltage drop and ambient temperature. Verify that the input voltage remains within the 15V maximum limit under all operating conditions.
Part Context
This component belongs to the LD1117 series of low-dropout linear regulators produced by STMicroelectronics. The series offers various fixed output voltages and adjustable versions across multiple packages including TO-220, SOT-223, and DPAK. The DT12 variant specifically designates the 1.2V output option in the surface-mount DPAK form factor.
Replacement Considerations
Cross-reference with other LD1117 variants such as LD1117DT12CTR which shares identical electrical characteristics but may differ in packaging handling or reel specifications.
