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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1.5A DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.5V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：79dB (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：-
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Overview
The LD1086DT33TR is a fixed-output low-dropout positive voltage regulator from the STMicroelectronics LD1086 series. It provides a stable 3.3 V output with a maximum current capacity of 1.5 A. The device operates within an input voltage range of 4.9 V to 30 V and maintains a typical dropout voltage of 1.3 V at full load, reaching up to 1.5 V under maximum conditions. It features a line regulation of 6 mV and load regulation of 10 mV, ensuring precise voltage control. The unit is housed in a surface-mount TO-252-3 (DPAK) package and supports operation across a wide temperature range from -40 °C to +125 °C.
Feature Summary
- Provides a fixed 3.3 V output with high accuracy for sensitive digital logic circuits
- Delivers up to 1.5 A continuous output current with low dropout characteristics
- Incorporates internal thermal overload and short-circuit protection mechanisms
Applications
- Battery-powered systems requiring efficient voltage regulation
- Post-regulation stages for switching power supplies
- General-purpose 3.3 V power distribution networks
Procurement Notes
Verify the specific suffix 'TR' indicates reel packaging when sourcing. Confirm the manufacturer is STMicroelectronics to ensure original component quality. Check RoHS compliance status against current regulatory requirements. Validate the TO-252-3 package dimensions for PCB footprint compatibility. Ensure the fixed 3.3 V output matches the target circuit design specifications before procurement.
Selection Notes
Select this component when a fixed 3.3 V rail is required with up to 1.5 A load capability. It is suitable for applications where input voltages vary between 4.9 V and 30 V. Consider the TO-252-3 package for surface-mount assembly needs. Evaluate thermal dissipation requirements given the 125 °C maximum junction temperature limit. Compare against adjustable variants if flexible output voltage is needed instead.
Part Context
This part belongs to the LD1086 family of positive low-dropout regulators designed for general-purpose power management. The series includes various fixed output voltages and adjustable versions. The DT33 variant specifically targets 3.3 V applications. It complements other LDOs like the LD1117 but offers higher current handling. The DPAK package allows for efficient heat dissipation in compact designs.
Replacement Considerations
LD1086DT33 is the non-reel equivalent. LD1117DT33TR offers similar functionality but with lower current capacity. AP1086D33G-13 is a pin-compatible alternative from Diodes Incorporated.
