LD2979M50TR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics:
  • High efficiency voltage regulator
  • Low dropout voltage
  • Small package size
  • Wide input voltage range
• Package: SOT-23-5
• Essence: LD2979M50TR is a voltage regulator IC designed for power management applications.
• Packaging/Quantity: Available in tape and reel packaging, with 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage: 5V
• Output Current: Up to 150mA
• Dropout Voltage: 200mV at 100mA load
• Quiescent Current: 45µA typical
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LD2979M50TR has a total of 5 pins arranged as follows:

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Pin Description: 1. VIN: Input voltage pin 2. GND: Ground pin 3. EN: Enable pin 4. NC: No connection 5. VOUT: Output voltage pin

Functional Features

• High efficiency voltage regulation
• Low dropout voltage ensures stable output even with low input voltage
• Built-in thermal shutdown protection
• Short-circuit current limiting
• Low quiescent current for power-saving operation
• Fast transient response

Advantages and Disadvantages

Advantages: - High efficiency operation - Small package size allows for space-constrained applications - Wide input voltage range provides flexibility - Low dropout voltage ensures stable output

Disadvantages: - Limited output current capacity (up to 150mA) - No overcurrent protection

Working Principles

The LD2979M50TR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The LD2979M50TR is suitable for various power management applications, including but not limited to: - Battery-powered devices - Portable electronics - IoT devices - Wearable devices - Consumer electronics

Detailed and Complete Alternative Models

1. LD2981M33TR: 3.3V output voltage, 150mA output current
2. LD2985M25TR: 2.5V output voltage, 150mA output current
3. LD2990M12TR: 12V output voltage, 150mA output current
4. LD2993M33TR: 3.3V output voltage, 300mA output current
5. LD2995M25TR: 2.5V output voltage, 300mA output current

These alternative models offer similar functionality and characteristics to the LD2979M50TR, but with different output voltages and/or higher output currents.

In conclusion, the LD2979M50TR is a high-efficiency voltage regulator IC designed for power management applications. With its small package size, wide input voltage range, and low dropout voltage, it provides stable and efficient voltage regulation. However, it has limitations in terms of output current capacity and lacks overcurrent protection. It finds applications in various fields such as battery-powered devices, portable electronics, IoT devices, wearable devices, and consumer electronics. Alternative models with different output voltages and higher output currents are also available.