Texas Instruments

LM9073SX

LM9073SX Description

The LM9073SX is a dual linear regulator IC designed by Texas Instruments, offering a fixed output voltage of 5V with two regulators capable of delivering 700mA and 100mA respectively. This IC is designed for surface-mount applications and features a TO263 package, making it suitable for compact and high-density designs. The LM9073SX operates with an input voltage range up to 27V and maintains a dropout voltage of only 1V at 700mA, ensuring efficient power delivery even under high load conditions.

LM9073SX Features

• Output Type: Fixed, providing a stable 5V output.
• Voltage - Input (Max): 27V, allowing for a wide range of input voltage sources.
• Current - Output: Dual regulators with 700mA and 100mA capabilities, offering flexibility in power distribution.
• Number of Regulators: Two, enabling simultaneous power management for multiple circuits.
• Output Configuration: Positive, ensuring compatibility with a wide range of electronic systems.
• Current - Supply (Max): 10 mA, minimizing power consumption in standby mode.
• Product Status: Obsolete, though still available for legacy systems.
• REACH Status: REACH Unaffected, ensuring compliance with environmental regulations.
• Voltage Dropout (Max): 1V @ 700mA, optimizing efficiency and reducing power loss.
• Moisture Sensitivity Level (MSL): 1 (Unlimited), making it suitable for various environmental conditions.
• Current - Quiescent (Iq): 100 µA, contributing to low power consumption.
• PSRR: 40dB (20kHz), ensuring high performance in noise-sensitive applications.
• Control Features: Enable and Watchdog (RSTO) functions, providing enhanced control and reliability.
• Protection Features: Over Temperature, Over Voltage, and Short Circuit protection, safeguarding the IC and connected components.
• Mounting Type: Surface Mount, ideal for compact and space-constrained designs.
• Package: Tape & Reel (TR), facilitating automated assembly processes.

LM9073SX Applications

The LM9073SX is ideal for a variety of applications requiring dual power regulation with fixed output voltage. Its dual regulators make it suitable for systems needing both high and low current outputs, such as:

• Embedded Systems: Providing stable power to microcontrollers and peripherals.
• Telecommunications: Powering communication modules and base stations.
• Industrial Controls: Ensuring reliable power supply for sensors and actuators.
• Consumer Electronics: Supplying power to devices like routers, modems, and set-top boxes.
• Automotive Electronics: Supporting electronic control units (ECUs) and infotainment systems.

Conclusion of LM9073SX

The LM9073SX from Texas Instruments is a versatile dual linear regulator IC, offering a fixed 5V output with two regulators capable of delivering 700mA and 100mA. Its low dropout voltage, high PSRR, and comprehensive protection features make it a reliable choice for a wide range of applications. Despite being marked as obsolete, the LM9073SX remains a valuable component for legacy systems and new designs requiring dual power regulation. Its surface-mount package and compatibility with automated assembly processes further enhance its appeal in modern electronics manufacturing.