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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1.5A TO252-3
- Series：-
- Mfr：TAEJIN
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：26V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.6V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：20 mA
- Current - Supply (Max)：22 mA
- PSRR：-
- Control Features：-
- Protection Features：Load Dump, Over Current, Over Temperature, Reverse Polarity
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252-3
- Grade：-
- Qualification：-
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Overview
The LM29150RS-3.3 is a fixed-output low-dropout voltage regulator manufactured by TAEJIN (HTC Korea). It provides a guaranteed 1.5A output current with a typical dropout voltage of 350mV at full load. The device features a ±1% initial tolerance and utilizes a PNP pass element for high efficiency. It operates within an input voltage range up to 26V and includes internal protections against overcurrent, thermal overload, and reverse polarity.
Feature Summary
- High current capability with 1.5A continuous output
- Low dropout voltage performance using PNP pass element technology
- Integrated protection against overcurrent, thermal shutdown, and reverse battery conditions
- Zero-current shutdown mode available in the 5-pin variant
Applications
- Battery powered equipment
- Automotive electronics
- High-efficiency linear power supplies
- Post-regulator for switching supplies
Procurement Notes
Verify the specific package type matches the design requirements, as the RS suffix indicates TO-252. Confirm that the 3.3V fixed output aligns with system voltage needs. Ensure the selected version (3-pin vs 5-pin) corresponds to the required control features such as enable or error flag signals. Check moisture sensitivity level ratings for assembly compatibility.
Selection Notes
Select this component when a stable 1.5A supply is required with minimal voltage headroom. The 350mV dropout makes it suitable for systems where input voltage approaches the output level. Consider the 5-pin version if logic-level enable control or error flag monitoring is necessary for system management.
Part Context
This part belongs to the LM2915x series, which includes LM29150 (fixed), LM29151 (fixed with enable/flag), and LM29152 (adjustable). The RS designation specifically identifies the surface-mount TO-252 package format. The series is designed for applications requiring high accuracy and robust transient response.
Replacement Considerations
Compatible substitutes include the STMicroelectronics LD29150 series and Micrel MIC29150 series. Verify pinout compatibility and thermal resistance values when replacing components to ensure adequate heat dissipation in the existing layout.
FAQ
What is the maximum operating input voltage?
The recommended operating input voltage is up to +26V, although the device can withstand transient spikes up to +60V.
Does the LM29150RS-3.3 have an enable pin?
No, the LM29150 is a 3-pin fixed regulator without an enable pin. The LM29151 variant includes the enable feature.
How does the device handle overtemperature conditions?
The regulator includes thermal shutdown protection that disables the device when the junction temperature exceeds 125°C.
