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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1.5A TO220-3L
- Series：-
- Mfr：TAEJIN
- Package：Tube
- 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：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220-3L
- Grade：-
- Qualification：-
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Overview
The LM29150T-3.3 is a fixed-output low-dropout voltage regulator manufactured by TAEJIN (HTC Korea). It provides a stable 3.3V output with a maximum current capability of 1.5A. The device utilizes a PNP pass element to achieve a dropout voltage of 350mV at full load. It features an accurate 1% guaranteed initial tolerance and extremely fast transient response. The component is housed in a TO-220-3L package.
Feature Summary
- High current capability of 1.5A with very low dropout voltage
- Accurate 1% guaranteed initial output voltage tolerance
- Reverse-battery and load dump protection
- Extremely fast transient response
Applications
- Battery powered equipment
- Automotive electronics
- High-efficiency linear power supplies
- Post-regulator for switching supply
Procurement Notes
Verify the manufacturer designation as HTC Korea or TAEJIN when sourcing this component, as datasheets may list either name. Confirm the specific suffix 'T' corresponds to the TO-220-3L package type required for your design. Ensure the ordering code matches the 3.3V fixed output variant to avoid confusion with adjustable or enable-pin versions.
Selection Notes
Select this regulator for applications requiring high current handling with minimal voltage drop across the input-output differential. The PNP pass element architecture offers superior dropout performance compared to older NPN designs. Consider thermal resistance ratings during PCB layout to ensure junction temperature remains within safe operating limits under maximum load conditions.
Part Context
This component belongs to the LM2915x family of high-current, high-accuracy low-dropout regulators. The family includes variants like LM29151 with enable pins and error flags, and LM29152 which is adjustable. The LM29150 series specifically focuses on fixed output configurations without additional control pins, simplifying circuit design for standard voltage regulation tasks.
Replacement Considerations
LM29150R-3.3
FAQ
What is the minimum load current requirement for the LM29150T-3.3?
The regulator requires a minimum load current of 5mA to swamp leakage currents and maintain proper operation across the operating temperature range.
How does the LM29150 handle over-temperature conditions?
Thermal shutdown disables the device when the die temperature exceeds the 125°C maximum safe operating temperature.
