LD39020ADTPU28R

Product Overview

• Category: Integrated Circuit
• Use: Power Management
• Characteristics: Low Dropout Regulator
• Package: TPU28R
• Essence: Provides regulated voltage with low dropout
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 300mA load current
• Quiescent Current: 50µA typical
• Output Current: Up to 300mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD39020ADTPU28R has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. VOUT: Output voltage pin
5. BYP: Bypass capacitor pin

Functional Features

• Low dropout voltage ensures efficient power conversion
• Wide input voltage range allows for versatile applications
• Low quiescent current minimizes power consumption
• Overcurrent and thermal protection for enhanced reliability
• Fast transient response for stable output voltage

Advantages

• High accuracy and stability in regulating output voltage
• Compact package size for space-constrained designs
• Wide operating temperature range for various environments
• Robust protection features ensure device longevity
• Low power consumption extends battery life

Disadvantages

• Limited output current compared to some other regulators
• Requires external bypass capacitor for optimal performance
• Not suitable for high-power applications

Working Principles

The LD39020ADTPU28R is a low dropout regulator that provides a regulated output voltage even when the input voltage is close to the desired output voltage. It achieves this by utilizing a pass transistor that operates in its active region, minimizing the voltage drop across it.

The device uses feedback control to maintain a stable output voltage despite variations in the input voltage and load conditions. The enable pin allows for easy on/off control of the regulator.

Detailed Application Field Plans

The LD39020ADTPU28R is commonly used in various applications where a stable and regulated power supply is required. Some typical application fields include:

1. Battery-powered devices: Portable electronics, handheld instruments, and wireless communication devices benefit from the low dropout voltage and low quiescent current of the LD39020ADTPU28R.
2. Automotive systems: The wide operating temperature range makes it suitable for automotive applications such as infotainment systems, lighting controls, and engine management units.
3. Industrial equipment: Control systems, sensors, and motor drives can utilize the LD39020ADTPU28R for reliable power management.
4. IoT devices: Internet of Things (IoT) devices often operate on low voltages and require efficient power management, making the LD39020ADTPU28R an ideal choice.

Detailed and Complete Alternative Models

• LD1117S33CTR: Low dropout linear regulator with fixed 3.3V output voltage
• LM317T: Adjustable positive voltage regulator with high accuracy and current limiting
• TPS7A4700RGWT: Ultra-low noise, high PSRR, low dropout voltage regulator

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

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