LM3525MX-H/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Adjustable Output, Current Limiting
• Package: SOT-23-5
• Essence: LM3525MX-H/NOPB is a voltage regulator IC designed to provide a stable output voltage with low dropout voltage. It is commonly used in various electronic devices to regulate and control the voltage levels.
• Packaging/Quantity: The LM3525MX-H/NOPB is available in a SOT-23-5 package and is typically sold in reels of 3000 units.

Specifications

• Input Voltage Range: 2.5V to 6V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 100mA load current
• Quiescent Current: 75µA (typical)
• Output Current: Up to 250mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3525MX-H/NOPB has a total of 5 pins arranged as follows:

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

• EN: Enable pin for turning the regulator on/off.
• VOUT: Output voltage pin.
• GND: Ground reference pin.
• VIN: Input voltage pin.
• FB: Feedback pin for adjusting the output voltage.

Functional Features

• Low Dropout Voltage: The LM3525MX-H/NOPB has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range using an external resistor divider connected to the FB pin.
• Current Limiting: The LM3525MX-H/NOPB incorporates current limiting circuitry to protect the device and the load from excessive current.

Advantages

• Compact package size (SOT-23-5) makes it suitable for space-constrained applications.
• Wide input voltage range allows for flexibility in various power supply configurations.
• Low quiescent current minimizes power consumption in standby or low-load conditions.
• Adjustable output voltage provides versatility for different system requirements.

Disadvantages

• Limited maximum output current of 250mA may not be sufficient for high-power applications.
• Dropout voltage of 200mV may result in some power loss, especially when operating with low input voltages.

Working Principles

The LM3525MX-H/NOPB is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage at the FB pin with a reference voltage. The internal circuitry adjusts the pass transistor to maintain a stable output voltage, compensating for changes in the input voltage and load conditions.

Application Field Plans

The LM3525MX-H/NOPB can be used in various applications, including:

1. Battery-powered devices: Portable electronics, such as smartphones, tablets, and portable media players, benefit from the LM3525MX-H/NOPB's low dropout voltage and adjustable output voltage capabilities.
2. Industrial control systems: The LM3525MX-H/NOPB can be used to regulate voltage levels in industrial control systems, ensuring stable and reliable operation.
3. Automotive electronics: The wide input voltage range and compact package make the LM3525MX-H/NOPB suitable for automotive applications, such as infotainment systems and lighting controls.

Alternative Models

• LM1117: A popular alternative with higher output current capability.
• LP2985: Another alternative with low dropout voltage and adjustable output voltage.
• MCP1702: Alternative with low quiescent current and wide input voltage range.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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