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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1.5A TO263-3
- 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-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：TO-263-3
- Grade：-
- Qualification：-
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Overview
The LM29150R-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 an accurate initial tolerance of ±1% and extremely fast transient response. It utilizes a PNP pass element process to achieve very low ground current, making it suitable for battery-powered systems and post-regulator applications.
Feature Summary
- High current capability up to 1.5A with low dropout voltage
- Accurate 1% guaranteed initial output voltage tolerance
- Reverse-battery and load dump protection
- Zero-current shutdown mode available in 5-pin versions
Applications
- Battery powered equipment
- High-efficiency linear power supplies
- Automotive electronics
- Post-regulator for switching supply
Procurement Notes
Verify the specific package variant (TO-263) and pin count (3L or 5L) against the design schematic. Confirm that the required output voltage matches the fixed 3.3V specification. Ensure thermal management meets the junction temperature limits under maximum load conditions.
Selection Notes
Select this component when a high-current LDO with tight voltage accuracy is required. The TO-263 package offers lower thermal resistance compared to smaller packages. Consider the 5-pin version if logic-controlled shutdown or error flagging functionality is needed for system monitoring.
Part Context
This part belongs to the LM2915x series, which includes LM29150 (fixed), LM29151 (fixed with enable/flag), and LM29152 (adjustable). The 'R' suffix indicates the TO-263 surface-mount package, while '-3.3' specifies the fixed 3.3V output voltage option within the family.
Replacement Considerations
Compatible substitutes include LD29150 and SPX29150. Verify that alternative parts support the same 1.5A current rating and 350mV dropout characteristics to ensure circuit performance parity.
