The R1290K003A-E2 is a voltage regulator manufactured by Nisshinbo Micro Devices Inc. It is a low-dropout (LDO) regulator designed to provide a stable and regulated output voltage even when the input voltage is close to the output voltage. This makes it suitable for battery-powered devices and other applications where input voltage may vary.

Applications

• Battery-powered devices: Provides a stable voltage supply for microcontrollers, sensors, and other components.
• Portable electronics: Used in smartphones, tablets, and other mobile devices.
• Wearable devices: Powers components in smartwatches, fitness trackers, and other wearable devices.
• Sensor circuits: Provides a stable voltage reference for accurate sensor readings.
• Microcontroller power supplies: Regulates voltage for microcontrollers in embedded systems.

Features

• Low dropout voltage: Maintains regulation with minimal difference between input and output voltage.
• Low quiescent current: Minimizes power consumption when the regulator is not actively supplying load current.
• Overcurrent protection: Protects the regulator and load from damage due to excessive current.
• Thermal shutdown: Prevents overheating by shutting down the regulator when temperature exceeds a safe limit.
• Small package size: Allows for use in space-constrained applications.

Benefits

• Extended battery life: Low quiescent current maximizes battery life in portable devices.
• Stable output voltage: Provides consistent voltage regulation despite input voltage variations.
• Protection against faults: Overcurrent protection and thermal shutdown prevent damage from abnormal conditions.
• Compact design: Small package size simplifies board layout and reduces component count.

Additional Details

The R1290K003A-E2 typically provides a fixed output voltage. The "003" in the part number likely indicates the output voltage value, for example, 3.0V or 3.3V. The E2 suffix could refer to a specific package type or other unique characteristics of the device. Consulting the Nisshinbo datasheet is crucial to confirm these details.

When using this LDO regulator, it is important to consider the input voltage range, output current requirements, and thermal dissipation. Proper layout techniques, including decoupling capacitors and thermal vias, are essential for optimal performance and reliability. The datasheet will provide detailed recommendations on component selection and board layout.