PT8A978BUWF

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management IC
• Characteristics:
  • High efficiency
  • Low power consumption
  • Compact size
• Package: QFN (Quad Flat No-leads)
• Essence: Power management and control
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.6V to 3.3V
• Maximum Output Current: 1.5A
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The PT8A978BUWF has a total of 16 pins arranged as follows:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | VIN | Input voltage | | 2 | GND | Ground | | 3 | EN | Enable pin | | 4 | FB | Feedback pin | | 5 | SW | Switching node | | 6 | PGND | Power ground | | 7 | LX | Inductor connection | | 8 | VOUT | Output voltage | | 9-16 | NC | No connection |

Functional Features

• Integrated synchronous buck converter
• Adjustable output voltage
• Overcurrent protection
• Thermal shutdown protection
• Soft-start function
• Low dropout voltage

Advantages

• High efficiency conversion
• Wide input voltage range
• Compact size for space-constrained applications
• Low power consumption
• Reliable overcurrent and thermal protection

Disadvantages

• Limited maximum output current (1.5A)
• Not suitable for high-power applications

Working Principles

The PT8A978BUWF is a power management IC that utilizes a synchronous buck converter to efficiently regulate the input voltage and provide an adjustable output voltage. It operates by switching the input voltage on and off at high frequencies, which reduces power losses and increases efficiency. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the switching transistor to maintain a stable output.

Detailed Application Field Plans

The PT8A978BUWF is commonly used in various portable electronic devices, such as smartphones, tablets, and wearable devices. It is particularly suitable for battery-powered applications due to its low power consumption and high efficiency. Some specific application areas include: - Mobile phones - Portable media players - Bluetooth headsets - GPS navigation systems - IoT devices

Detailed and Complete Alternative Models

1. PT8A979BUWF: Similar specifications and features, but with a higher maximum output current of 2A.
2. PT8A980BUWF: Higher input voltage range (up to 7V) and lower dropout voltage compared to PT8A978BUWF.
3. PT8A981BUWF: Integrated dual-channel buck converter with independent control and adjustable output voltages.

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

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