Texas Instruments LM338T Adjustable Positive Voltage Regulator, TO-220, 5A

The Texas Instruments LM338T/NOPB is a high-performance, adjustable 3-terminal positive voltage regulator capable of delivering in excess of 5A across a broad output range of 1.2V to 37V. Designed for ease of use, it requires only two external resistors to set the desired output voltage. Its advanced circuit architecture provides exceptional load and line regulation, matching the performance of many dedicated commercial power supplies, ensuring stable and reliable power delivery for your critical applications.

A standout feature is the intelligent, time-dependent current limiting. This circuitry permits the regulator to supply peak currents of up to 12A for brief durations, making it exceptionally robust for handling heavy transient loads and facilitating smooth start-up under full-load conditions. Under sustained operation, the current limit automatically decreases to a safe, continuous level, providing inherent protection for the regulator itself. Comprehensive on-chip safeguards include thermal overload protection and safe-area compensation for the internal power transistor, ensuring long-term reliability and durability.

Key Specifications & Features

• High Current Output: Delivers a specified 5A continuous output current with a 7A peak capability.
• Wide Adjustment Range: Output voltage is easily adjustable from 1.2V to 37V.
• Superior Regulation: Offers outstanding line and load regulation for consistent performance.
• Built-in Protections: Features short-circuit protection, thermal shutdown, and safe-area compensation.
• Excellent Ripple Rejection: Provides a high 75dB ripple rejection ratio (at 120Hz) for clean DC output.
• Stable Performance: Boasts excellent long-term stability of 0.3% over 1000 hours at high temperature.
• Standard Package: Supplied in a industry-standard TO-220 through-hole package for easy mounting and heatsinking.