LM3658SDX-B/NOPB

The LM3658SDX-B/NOPB is a high-performance, low-dropout (LDO) linear voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage with low noise and high power supply rejection, making it suitable for a variety of applications, including portable devices, RF applications, and other sensitive electronic circuits.

Key Features:

1. Output Voltage: The LM3658 can be configured to provide a fixed output voltage, typically around 1.8V, but it may also support adjustable output configurations depending on the specific variant.

2. Input Voltage Range: The device operates over a wide input voltage range, typically from 2.5V to 5.5V, allowing it to be used with various power sources, including lithium-ion batteries.

3. Low Dropout Voltage: The LDO features a low dropout voltage, which is the minimum difference between the input and output voltage required for the regulator to function properly. This characteristic is crucial for battery-powered applications where maximizing battery life is essential.

4. Output Current: The LM3658 can deliver a maximum output current of up to 1A, making it suitable for powering a range of devices and components.

5. Power Supply Rejection Ratio (PSRR): The device boasts a high PSRR, which helps to minimize the impact of fluctuations in the input voltage on the output voltage, ensuring a clean and stable power supply for sensitive circuits.

6. Thermal Protection: The LM3658 includes built-in thermal shutdown protection, which prevents the device from overheating and potentially damaging itself or the connected load.

7. Package Type: The LM3658SDX-B/NOPB is typically available in a compact package, such as a 5-pin SOT-23 or similar, which is ideal for space-constrained applications.

8. Low Quiescent Current: The regulator features low quiescent current, which is beneficial for battery-operated devices, as it helps to extend battery life by reducing power consumption when the device is in standby mode.

9. Noise Performance: The LM3658 is designed to provide low output noise, making it suitable for applications where noise sensitivity is critical, such as RF circuits and precision analog devices.

Applications:

• Portable electronics
• Battery-powered devices
• RF and wireless applications
• Microcontrollers and DSPs
• Power management systems

Conclusion:

The LM3658SDX-B/NOPB from Texas Instruments is a versatile and efficient LDO voltage regulator that combines low dropout voltage, high PSRR, and low noise performance, making it an excellent choice for a wide range of electronic applications. Its compact size and robust features make it particularly suitable for modern portable and battery-operated devices.