UC3906DWG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Battery Charger Controller
• Characteristics: High-performance, versatile, and efficient
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Control and monitor battery charging process
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 8V to 16V
• Output Voltage Range: 2V to 20V
• Maximum Charging Current: 10A
• Operating Temperature Range: -40°C to +85°C
• Package Dimensions: 5mm x 6.1mm x 1.75mm

Pin Configuration

The UC3906DWG4 has a total of 16 pins. The pin configuration is as follows:

1. VREF
2. ISET
3. VSENSE
4. VBAT
5. GND
6. BATFET
7. TIMER
8. CT
9. COMP
10. VCC
11. VREG
12. VREF2
13. VFB
14. VSENSE2
15. VSENSE1
16. VREF1

Functional Features

• Constant current and constant voltage charging modes
• Automatic detection of battery voltage and type
• Overvoltage and overcurrent protection
• Temperature monitoring and thermal shutdown
• LED indicators for charging status
• Adjustable charging current and voltage settings

Advantages and Disadvantages

Advantages: - Versatile and suitable for various battery types - Efficient charging process with high accuracy - Comprehensive protection features ensure safety - Compact package size for space-constrained applications

Disadvantages: - Limited maximum charging current compared to some other models - Requires external components for complete battery charging system

Working Principles

The UC3906DWG4 is a battery charger controller IC that operates based on the constant current and constant voltage charging principles. It regulates the charging process by monitoring the battery voltage, current, and temperature.

When the charger is connected to a battery, the UC3906DWG4 automatically detects the battery type and adjusts the charging parameters accordingly. It starts with a constant current mode to charge the battery rapidly until it reaches a predefined voltage threshold. Then, it switches to the constant voltage mode to maintain a steady voltage while reducing the charging current.

The IC continuously monitors the battery voltage, current, and temperature to ensure safe and efficient charging. It provides protection against overvoltage, overcurrent, and overheating conditions, preventing damage to the battery and the charging circuit.

Detailed Application Field Plans

The UC3906DWG4 is widely used in various applications that require battery charging control. Some of the common application fields include:

1. Portable electronic devices: Mobile phones, tablets, laptops, etc.
2. Electric vehicles: Electric cars, e-bikes, scooters, etc.
3. Renewable energy systems: Solar-powered devices, wind turbines, etc.
4. Industrial equipment: Battery-powered tools, machinery, etc.
5. Emergency backup systems: Uninterruptible power supplies (UPS), emergency lighting, etc.

Detailed and Complete Alternative Models

1. UC3906N - DIP package version of UC3906DWG4
2. UC3906DW - Wide temperature range version of UC3906DWG4
3. UC3906DWTR - Tape and Reel packaging with 3000 units per reel

These alternative models offer similar functionality and can be used as replacements for UC3906DWG4 depending on specific requirements.

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