LP2902MX/NOPB

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: Low Dropout, Adjustable Output, Low Quiescent Current
• Package: SOIC-8
• Essence: Linear Regulator
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 7V
• Output Voltage Range: 1.25V to 5.5V
• Dropout Voltage: 300mV at 100mA
• Quiescent Current: 120µA
• Output Current: 200mA
• Line Regulation: ±0.05%
• Load Regulation: ±0.1%
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LP2902MX/NOPB has a total of 8 pins arranged as follows:

```

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| | --| Vout Vin |-- --| GND EN |-- --| NC NC |-- |___________| ```

• Vout: Output Voltage
• Vin: Input Voltage
• GND: Ground
• EN: Enable
• NC: No Connection

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• Adjustable output voltage allows for flexibility in various applications.
• Low quiescent current minimizes power consumption during standby or idle periods.
• Thermal shutdown protection prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages

• Compact and space-saving SOIC-8 package.
• Wide input voltage range enables compatibility with various power sources.
• Excellent line and load regulation for stable output voltage.
• Low quiescent current prolongs battery life in portable devices.

Disadvantages

• Limited output current of 200mA may not be sufficient for high-power applications.
• Dropout voltage of 300mV may cause a significant power loss in low voltage scenarios.

Working Principles

The LP2902MX/NOPB is a linear regulator that maintains a stable output voltage by adjusting the resistance between the input and output terminals. It utilizes a pass transistor to regulate the output voltage based on the feedback received from an internal error amplifier. The dropout voltage is minimized by using a low resistance pass element, ensuring efficient regulation even with small input-output differentials.

Detailed Application Field Plans

The LP2902MX/NOPB is commonly used in various electronic devices and systems, including:

1. Battery-powered devices: Portable audio players, handheld gaming consoles, and remote controls.
2. Automotive electronics: Infotainment systems, dashboard displays, and lighting controls.
3. Industrial equipment: Sensors, actuators, and control systems.
4. Communication devices: Wireless routers, modems, and network switches.
5. Medical devices: Patient monitoring systems, diagnostic equipment, and wearable devices.

Detailed and Complete Alternative Models

1. LM317T: Adjustable Voltage Regulator, TO-220 package, 1.2V to 37V output range.
2. LT1086: Low Dropout Regulator, TO-220 package, 1.2V to 20V output range, 1.5A output current.
3. LM1117: Low Dropout Regulator, SOT-223 package, 1.2V to 5V output range, 800mA output current.

These alternative models offer similar functionality and can be considered as substitutes for the LP2902MX/NOPB in different applications.

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