LM2758TLX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency step-up DC-DC converter - Low input voltage range: 1.8V to 5.5V - Adjustable output voltage up to 28V - Maximum output current: 100mA - Low shutdown current: 0.01µA - Small package size: SOT-23-6

Package: SOT-23-6

Essence: The LM2758TLX/NOPB is a high-efficiency step-up DC-DC converter designed for power management applications. It provides an adjustable output voltage up to 28V with a maximum output current of 100mA.

Packaging/Quantity: The LM2758TLX/NOPB is available in a small SOT-23-6 package. It is typically sold in reels containing a quantity of 3000 units.

Specifications

• Input Voltage Range: 1.8V to 5.5V
• Output Voltage Range: Up to 28V (adjustable)
• Maximum Output Current: 100mA
• Shutdown Current: 0.01µA
• Efficiency: Up to 90%
• Switching Frequency: 1.2MHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM2758TLX/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin (active high)
4. FB: Feedback pin for output voltage regulation
5. SW: Switching node pin
6. VOUT: Output voltage pin

Functional Features

• High efficiency conversion for extended battery life
• Adjustable output voltage for versatile applications
• Low shutdown current for power-saving mode
• Small package size for space-constrained designs
• Wide input voltage range for compatibility with various power sources

Advantages and Disadvantages

Advantages: - High efficiency conversion - Adjustable output voltage - Low shutdown current - Small package size

Disadvantages: - Maximum output current limited to 100mA - Limited operating temperature range (-40°C to +85°C)

Working Principles

The LM2758TLX/NOPB is a step-up DC-DC converter that uses a high-frequency switching regulator to efficiently boost the input voltage to a higher output voltage. It employs a pulse-width modulation (PWM) control scheme to regulate the output voltage based on the feedback signal from the FB pin.

When the EN pin is high, the converter is enabled, and the SW pin switches between VIN and GND at a high frequency determined by the internal oscillator. This switching action allows energy to be transferred from the input to the output, resulting in a higher output voltage.

The feedback voltage at the FB pin is compared to an internal reference voltage, and the duty cycle of the switching signal is adjusted accordingly to maintain the desired output voltage. The LM2758TLX/NOPB also includes protection features such as overcurrent and thermal shutdown.

Detailed Application Field Plans

The LM2758TLX/NOPB is commonly used in various battery-powered applications where efficient power management is crucial. Some typical application fields include:

1. Portable electronic devices (e.g., smartphones, tablets, portable media players)
2. Wearable devices (e.g., smartwatches, fitness trackers)
3. Wireless communication systems
4. Industrial and medical equipment
5. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM2758TLX/NOPB are:

1. LM2754TLX/NOPB
2. LM2756TLX/NOPB
3. LM2759TLX/NOPB
4. LM2776TLX/NOPB

These models are also high-efficiency step-up DC-DC converters with adjustable output voltage and small package sizes. However, each model may have slightly different specifications and features, so it is important to refer to their respective datasheets for detailed information.

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