BD9D323QWZ-E2

Product Overview

• Category: Power Management IC
• Use: Voltage Regulator
• Characteristics: High efficiency, compact size, low power consumption
• Package: QFN (Quad Flat No-Lead)
• Essence: This product is a voltage regulator integrated circuit designed for various applications requiring stable and regulated power supply.
• Packaging/Quantity: Available in tape and reel packaging, with 3000 units per reel.

Specifications

• Input Voltage Range: 4.5V to 18V
• Output Voltage Range: 0.8V to 5.5V
• Maximum Output Current: 3A
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C
• Protection Features: Overcurrent protection, thermal shutdown, undervoltage lockout

Detailed Pin Configuration

The BD9D323QWZ-E2 package consists of 16 pins arranged as follows:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. FB: Feedback pin
5. SS: Soft-start pin
6. PG: Power good indicator pin
7. VOUT: Output voltage pin
8. COMP: Compensation pin
9. BST: Bootstrap pin
10. SW: Switching node pin
11. AGND: Analog ground pin
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. VCC: Supply voltage pin

Functional Features

• Wide input voltage range allows compatibility with various power sources.
• High efficiency ensures minimal power loss during voltage conversion.
• Compact size enables space-saving designs in applications with limited board space.
• Low power consumption contributes to energy-efficient systems.
• Overcurrent protection, thermal shutdown, and undervoltage lockout enhance system reliability.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power dissipation. - Compact size allows for flexible integration in space-constrained designs. - Wide input voltage range provides versatility in different applications. - Protection features ensure safe operation and protect the circuitry.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Requires external components for proper operation, increasing overall system complexity.

Working Principles

The BD9D323QWZ-E2 is a step-down (buck) voltage regulator that operates by converting a higher input voltage to a lower output voltage. It utilizes a switching mechanism to efficiently regulate the output voltage while minimizing power loss. The integrated control circuitry ensures stable and accurate voltage regulation under varying load conditions.

Detailed Application Field Plans

The BD9D323QWZ-E2 is widely used in various electronic devices and systems, including but not limited to:

1. Consumer electronics: Smartphones, tablets, portable media players
2. Industrial equipment: Factory automation, motor control systems
3. Automotive applications: Infotainment systems, lighting control
4. Communication devices: Routers, switches, network equipment
5. IoT devices: Wearables, smart home appliances

Detailed and Complete Alternative Models

1. BD9D321EFJ-E2: Similar voltage regulator with 2A maximum output current.
2. BD9D322EFJ-E2: Similar voltage regulator with 2.5A maximum output current.
3. BD9D324EFJ-E2: Similar voltage regulator with 4A maximum output current.
4. BD9D325EFJ-E2: Similar voltage regulator with 5A maximum output current.

These alternative models offer different maximum output currents to cater to a wider range of application requirements.

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