UC3901DWG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance power management IC designed for various applications
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Efficiently manages power distribution and control in electronic systems
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to 3.6V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 50µA (typical)
• Switching Frequency: 500kHz (typical)
• Number of Pins: 16

Detailed Pin Configuration

1. VCC: Power supply input
2. GND: Ground reference
3. EN: Enable pin for turning the IC on/off
4. FB: Feedback pin for voltage regulation
5. COMP: Compensation pin for stability control
6. SS: Soft-start pin for gradual power-up
7. PGND: Power ground reference
8. BST: Boost pin for high-side MOSFET gate drive
9. LX: Switch node connection for inductor
10. SW: Switch node connection for synchronous rectifier
11. AGND: Analog ground reference
12. PG: Power good output indication
13. OCSET: Overcurrent protection threshold setting
14. UVLO: Undervoltage lockout threshold setting
15. OVP: Overvoltage protection threshold setting
16. REF: Reference voltage output

Functional Features

• Efficient power management with high accuracy and stability
• Wide input and output voltage range for versatile applications
• Adjustable overcurrent, undervoltage, and overvoltage protection
• Soft-start feature for controlled power-up
• Power good output indication for system monitoring

Advantages and Disadvantages

Advantages

• High-performance power management solution
• Wide operating temperature range for various environments
• Compact SOIC package for space-constrained designs
• Adjustable protection thresholds for enhanced system reliability

Disadvantages

• Limited pin count may restrict functionality in complex systems
• Requires external components for complete power management solution

Working Principles

The UC3901DWG4 is a power management IC that efficiently manages power distribution and control in electronic systems. It operates by regulating the input voltage to provide a stable output voltage within the specified range. The IC incorporates features such as overcurrent, undervoltage, and overvoltage protection to safeguard the system from potential faults. The soft-start function ensures a gradual power-up, preventing sudden current surges. The power good output indicates the status of the power supply, enabling system monitoring.

Detailed Application Field Plans

The UC3901DWG4 finds applications in various fields, including:

1. Consumer Electronics: Power management in smartphones, tablets, and portable devices.
2. Industrial Automation: Control systems, motor drives, and power supplies.
3. Automotive: Battery management, lighting systems, and infotainment.
4. Telecommunications: Base stations, routers, and network equipment.
5. Renewable Energy: Solar inverters, wind turbines, and energy storage systems.

Detailed and Complete Alternative Models

1. UC3901DW: Similar specifications and features, available in DIP (Dual Inline Package).
2. UC3901D: Lower quiescent current, suitable for low-power applications.
3. UC3901Q: Enhanced ESD protection, ideal for harsh environments.

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

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