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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 1.5A PPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：14V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：180 µA
- Current - Supply (Max)：80 mA
- PSRR：72dB (120Hz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Supplier Device Package：PPAK
- Grade：-
- Qualification：-
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Overview
The LD29150PT18 is a positive fixed linear voltage regulator from STMicroelectronics, delivering a stable 1.8V output at up to 1.5A. It utilizes PPAK surface-mount packaging and supports input voltages up to 14V. Key electrical characteristics include a maximum dropout voltage of 0.7V at full load, line regulation of 0.5%, and load regulation of 1%. The device operates within a junction temperature range of -40°C to +125°C and features internal protection against overcurrent and thermal overload.
Feature Summary
- Provides a fixed 1.8V output with high current capability for power-sensitive applications
- Incorporates comprehensive protection mechanisms including overcurrent limiting and thermal shutdown
- Utilizes low-dropout technology to maintain regulation under varying input conditions
Applications
- Portable battery-powered equipment requiring efficient voltage regulation
- Embedded systems needing stable power supplies for microcontrollers
- Communication modules requiring low-noise linear regulation
Procurement Notes
Verify the specific suffix 'PT18' confirms the 1.8V fixed output variant. Confirm the package designation matches the required PPAK footprint. Check RoHS compliance status as per current manufacturing standards. Ensure the component source is authorized to avoid counterfeit risks. Validate that the operating temperature range meets system requirements.
Selection Notes
Select this component when a fixed 1.8V rail is required with 1.5A capacity. Consider the PPAK package for space-constrained PCB layouts. Evaluate thermal dissipation needs given the 0.7V dropout at maximum load. Compare input voltage ranges to ensure compatibility with the system supply. Verify that the fixed output architecture suits the design without external resistors.
Part Context
This part belongs to the LD29150 series of very low drop voltage regulators. The series offers various fixed output voltages and adjustable versions. The PT suffix indicates the specific pinout and package configuration used by STMicroelectronics for this family. These regulators are designed for general-purpose power management in consumer and industrial electronics.
Replacement Considerations
Direct substitutes include other LD29150 variants with different fixed output voltages if the voltage level can be adjusted via external circuitry, though this requires redesign. Cross-referencing with similar 1.5A LDOs from other manufacturers requires verifying pin compatibility and thermal performance.
