LM3722EM5-3.08/NOPB

Overview

Product Category: Voltage Regulator

Use: The LM3722EM5-3.08/NOPB is a voltage regulator designed to provide a stable output voltage for various electronic devices.

Characteristics: - Input Voltage Range: 2.7V to 5.5V - Output Voltage: 3.08V - Output Current: Up to 500mA - Low Dropout Voltage: 200mV at 100mA - Low Quiescent Current: 40µA (typical) - Package Type: SOT-23-5 - Operating Temperature Range: -40°C to +125°C

Package and Quantity: The LM3722EM5-3.08/NOPB is available in a small SOT-23-5 package. It is typically sold in reels of 3000 units.

Specifications

The LM3722EM5-3.08/NOPB has the following specifications:

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 3.08V ±2%
• Output Current: Up to 500mA
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 40µA (typical)
• Line Regulation: ±0.1% (typical)
• Load Regulation: ±0.4% (typical)
• Ripple Rejection: 70dB (typical)
• Shutdown Current: 0.1µA (typical)

Pin Configuration

The LM3722EM5-3.08/NOPB has the following pin configuration:

____ EN | | VIN NC | | GND NC | | VOUT NC | | NC |____|

• EN: Enable Pin (Active High)
• VIN: Input Voltage Pin
• GND: Ground Pin
• VOUT: Output Voltage Pin

Functional Features

The LM3722EM5-3.08/NOPB offers the following functional features:

1. Low Dropout Voltage: The regulator maintains a low dropout voltage of 200mV at 100mA, ensuring efficient power conversion even with small input-output differentials.
2. Low Quiescent Current: With a typical quiescent current of 40µA, the LM3722EM5-3.08/NOPB minimizes power consumption in standby or idle modes.
3. Wide Input Voltage Range: The device accepts an input voltage range of 2.7V to 5.5V, making it suitable for various battery-powered applications.
4. High Ripple Rejection: The regulator provides excellent ripple rejection of 70dB (typical), ensuring a clean and stable output voltage even in noisy environments.
5. Enable Pin Control: The EN pin allows for easy on/off control of the regulator, enabling power-saving functionality.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - Low quiescent current minimizes power consumption. - Wide input voltage range allows for versatile applications. - High ripple rejection provides a clean and stable output voltage. - Enable pin control allows for easy on/off operation.

Disadvantages: - Limited output current capability (up to 500mA).

Working Principles

The LM3722EM5-3.08/NOPB is a linear voltage regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage to adjust the pass transistor's conduction, maintaining a stable output voltage.

When the EN pin is high, the regulator is enabled, and the pass transistor conducts to regulate the output voltage. Conversely, when the EN pin is low, the regulator enters a low-power shutdown mode, reducing power consumption to 0.1µA.

Application Field Plans

The LM3722EM5-3.08/NOPB is suitable for various applications that require a stable output voltage, such as:

1. Battery-Powered Devices: Portable electronics, including smartphones, tablets, and wearable devices, can benefit from the LM3722EM5-3.08/NOPB's efficient power conversion and low quiescent current.
2. Wireless Communication Systems: The regulator can be used in wireless communication systems, ensuring a stable power supply for RF modules, microcontrollers, and other components.
3. Industrial Control Systems: Industrial control systems often require precise and stable voltage regulation. The LM3722EM5-3.08/NOPB can provide reliable power for sensors, actuators, and control circuitry.