LM46000PWPR

Product Overview

Category: Power Management ICs
Use: Voltage Regulator
Characteristics: High Efficiency, Low Dropout Voltage
Package: PowerPAD HTSSOP-20
Essence: Linear Voltage Regulator
Packaging/Quantity: Tape and Reel (2500 units per reel)

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to 3.6V
• Maximum Output Current: 1A
• Dropout Voltage: 200mV at 1A
• Quiescent Current: 45µA
• Line Regulation: ±0.2% typical
• Load Regulation: ±0.4% typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM46000PWPR is a 20-pin PowerPAD HTSSOP package. The pin configuration is as follows:

1. EN (Enable)
2. GND (Ground)
3. FB (Feedback)
4. VOUT (Output Voltage)
5. VOUT (Output Voltage)
6. VOUT (Output Voltage)
7. VOUT (Output Voltage)
8. VOUT (Output Voltage)
9. VOUT (Output Voltage)
10. VOUT (Output Voltage)
11. VOUT (Output Voltage)
12. VOUT (Output Voltage)
13. VOUT (Output Voltage)
14. VOUT (Output Voltage)
15. VOUT (Output Voltage)
16. VOUT (Output Voltage)
17. VOUT (Output Voltage)
18. VOUT (Output Voltage)
19. VIN (Input Voltage)
20. VIN (Input Voltage)

Functional Features

• High efficiency voltage regulation
• Low dropout voltage for improved power efficiency
• Enable pin for easy on/off control
• Overcurrent and thermal protection
• Fast transient response

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption - Low dropout voltage allows for efficient power conversion - Enable pin provides flexibility in power management - Overcurrent and thermal protection ensure device safety - Fast transient response enables stable voltage output during load changes

Disadvantages: - Limited maximum output current of 1A - Input voltage range is restricted to 2.7V to 5.5V

Working Principles

The LM46000PWPR is a linear voltage regulator that regulates the output voltage based on the input voltage. It operates by comparing the feedback voltage (FB) with a reference voltage to adjust the output voltage accordingly. The enable pin (EN) controls the on/off state of the regulator.

When the enable pin is high, the regulator is enabled, and it actively regulates the output voltage. When the enable pin is low, the regulator enters a low-power standby mode, reducing power consumption.

The LM46000PWPR utilizes a pass transistor to regulate the output voltage. It maintains a constant voltage drop across the pass transistor, resulting in a stable output voltage even when the input voltage or load conditions change.

Detailed Application Field Plans

The LM46000PWPR is commonly used in various applications where voltage regulation is required. Some of the typical application fields include:

1. Battery-powered devices: The LM46000PWPR's low dropout voltage and high efficiency make it suitable for battery-powered devices such as smartphones, tablets, portable media players, and handheld gaming consoles.

2. Industrial equipment: The regulator can be used in industrial equipment that requires stable and reliable power supply, such as control systems, sensors, and communication modules.

3. Automotive electronics: With its wide operating temperature range and robust protection features, the LM46000PWPR is suitable for automotive applications, including infotainment systems, lighting controls, and engine management systems.

4. IoT devices: The regulator can be utilized in Internet of Things (IoT) devices that require efficient power management, such as smart home devices, wearables, and wireless sensors.

Detailed and Complete Alternative Models

1. LM1117-3.3: A low dropout voltage regulator with a fixed output voltage of 3.3V. It has a maximum output current of 800mA and is available in various package options.

2. LT1763: An ultra-low dropout linear regulator with adjustable output voltage. It offers high accuracy and low noise performance, making it suitable for precision applications.

3. TPS7A4700: A high-voltage, low-dropout linear regulator designed for industrial applications. It provides excellent line and load regulation, along with overcurrent and thermal protection.

4. ADP3339: A low dropout linear regulator with a wide input voltage range. It offers high PSRR (Power Supply Rejection Ratio) and low output noise, making it ideal for audio and RF applications.