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Product Detailed Parameters
- Description：IC REG LINEAR 5V 1.5A TO263-5L
- 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)：5V
- 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：Enable, Error Flag
- Protection Features：Load Dump, Over Current, Over Temperature, Reverse Polarity
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Supplier Device Package：TO-263-5L
- Grade：-
- Qualification：-
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Overview
The LM29151R-5.0 is a fixed-output low-dropout voltage regulator manufactured by HTC Korea TAEJIN Technology Co., providing a stable 5.0V output at up to 1.5A load current. It features a PNP pass element with a maximum dropout voltage of 350mV at full load and an initial output tolerance of ±1%. The device includes logic-level enable control, an error flag for out-of-regulation signaling, and comprehensive protection against overcurrent, reverse polarity, and thermal overload.
Feature Summary
- Features logic-level enable control and an error flag that signals when the output falls out of regulation
- Provides high current capability of 1.5A with extremely fast transient response
- Includes reverse-battery and load dump protection capabilities
- Offers zero-current shutdown mode for minimal power consumption
Applications
- Battery powered equipment
- High-efficiency linear power supplies
- Automotive electronics
- Post-regulator for switching supplies
Procurement Notes
Verify the specific package type (TO-263) and pin configuration (5-pin) matches the design requirements. Confirm the ordering suffix corresponds to the reel supply format. Ensure input voltage does not exceed the absolute maximum ratings during operation.
Selection Notes
Select this component for applications requiring precise 5.0V regulation under heavy loads. The 5-pin variant is necessary if system monitoring via the error flag or remote shutdown via the enable pin is required. Consider thermal resistance values for heat dissipation planning in enclosed environments.
Part Context
This part belongs to the LM2915x family of very low dropout regulators from HTC Korea TAEJIN Technology Co. The 'LM29151' designation indicates the inclusion of an enable pin and error flag compared to the base model. The 'R' suffix identifies the TO-263 surface-mount package.
Replacement Considerations
Compatible substitutes include the LM29150T-5.0 (without enable/flag), LM29152T (adjustable version), and STMicroelectronics LD49150. Verify pin compatibility and thermal characteristics before substitution.
FAQ
What is the function of the Error Flag on the LM29151?
The Error Flag is an open-collector output that pulls low when the output voltage drops approximately 5% below its nominal value, indicating faults such as over-current or low input voltage.
How does the Enable pin operate?
The Enable pin allows ON/OFF control with TTL/CMOS compatible thresholds. When disabled, it draws only microamperes of leakage current, effectively shutting down the regulator.
