Texas Instruments

TPS79942DDCRG4

TPS79942DDCRG4 Description

The TPS79942DDCRG4 is a high-performance linear regulator designed by Texas Instruments, offering a fixed output voltage of 4.2V and a maximum output current of 200mA. This device is part of the Power Management Integrated Circuit (PMIC) category and is housed in a compact SOT23-5 package, making it suitable for surface mount applications. The regulator is designed to operate with an input voltage range up to 6.5V, ensuring compatibility with a variety of power sources.

TPS79942DDCRG4 Features

• Output Type: Fixed
• Input Voltage Range: Up to 6.5V
• Output Current: 200mA
• Output Configuration: Positive
• Output Voltage: Fixed at 4.2V
• Dropout Voltage: As low as 0.16V at 200mA, ensuring high efficiency even at low input-to-output voltage differentials.
• Quiescent Current: 60 µA, contributing to low power consumption in standby mode.
• Power Supply Rejection Ratio (PSRR): Ranging from 70dB at 100Hz to 38dB at 100kHz, providing excellent noise filtering capabilities.
• Control Features: Enable functionality allows for dynamic control of the regulator's operation.
• Protection Features: Over Current, Over Temperature, Reverse Polarity, and Under Voltage Lockout (UVLO) protect the device and connected circuits from various fault conditions.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), suitable for a wide range of manufacturing environments.

TPS79942DDCRG4 Applications

The TPS79942DDCRG4 is ideal for applications requiring a stable 4.2V supply with low power consumption and high efficiency. Its compact size and surface mount package make it suitable for space-constrained designs. Key applications include:

• Battery-powered devices: Provides a stable voltage for lithium-ion batteries, ensuring optimal performance and longevity.
• Portable electronics: Ideal for smartphones, tablets, and other portable devices where power efficiency and small form factor are critical.
• Wearable technology: Suitable for fitness trackers, smartwatches, and other wearable devices that require low power consumption and high reliability.
• IoT devices: Enables stable power supply for sensors and actuators in Internet of Things (TIo) applications.
• Medical devices: Provides reliable power for portable medical devices, ensuring accurate operation and patient safety.

Conclusion of TPS79942DDCRG4

The TPS79942DDCRG4 from Texas Instruments is a robust and efficient linear regulator designed for applications requiring a stable 4.2V supply. Its low dropout voltage, high PSRR, and comprehensive protection features make it a reliable choice for a wide range of electronic devices. The compact SOT23-5 package and surface mount compatibility ensure ease of integration into modern, space-constrained designs. With its low quiescent current and compliance with environmental standards, the TPS79942DDCRG4 stands out as an excellent option for power management in portable and wearable electronics.