UC2861DWG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance PWM Controller
• Package: SOIC-16
• Essence: Regulates and controls power delivery in various applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 2.5V to 30V
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to 85°C
• Switching Frequency: 50kHz to 500kHz
• Output Current: Up to 1A

Detailed Pin Configuration

The UC2861DWG4 has a total of 16 pins. The pin configuration is as follows:

1. COMP: Compensation pin for feedback control loop
2. FB: Feedback pin for output voltage regulation
3. RT/CT: Timing components connection pin
4. CT: Timing capacitor connection pin
5. RT: Timing resistor connection pin
6. GND: Ground reference pin
7. VREF: Reference voltage output pin
8. VCC: Supply voltage input pin
9. SYNC: Synchronization input pin
10. OSC: Oscillator timing capacitor connection pin
11. SS/TR: Soft-start and tracking pin
12. CS: Current sense input pin
13. DRVH: High-side gate driver output pin
14. DRVL: Low-side gate driver output pin
15. VSENSE: Voltage sense input pin
16. VOUT: Output voltage pin

Functional Features

• High-performance pulse-width modulation (PWM) controller
• Wide input voltage range for versatile applications
• Adjustable output voltage for flexibility
• High switching frequency for efficient power conversion
• Overcurrent protection for enhanced safety
• Soft-start and tracking function for controlled startup

Advantages and Disadvantages

Advantages: - High-performance and reliable power management solution - Wide input voltage range allows for various applications - Adjustable output voltage provides flexibility - Efficient power conversion due to high switching frequency - Overcurrent protection enhances safety - Soft-start and tracking function ensures controlled startup

Disadvantages: - Limited output current capability (up to 1A) - Requires external timing components for operation

Working Principles

The UC2861DWG4 is a high-performance PWM controller that regulates and controls power delivery in various applications. It operates by generating a pulse-width modulated signal based on the feedback received from the output voltage. This signal is then used to control the switching of power transistors, which in turn regulate the output voltage.

The controller continuously monitors the output voltage and adjusts the duty cycle of the PWM signal to maintain the desired output voltage level. It also incorporates overcurrent protection to prevent damage to the system in case of excessive load.

Detailed Application Field Plans

The UC2861DWG4 is widely used in power management applications such as:

1. Switching Power Supplies: The controller is commonly employed in switch-mode power supplies to regulate and control the output voltage efficiently.
2. LED Lighting: It can be utilized in LED lighting systems to provide stable and adjustable power to the LEDs.
3. Battery Charging: The controller can be integrated into battery charging circuits to ensure proper charging and prevent overcharging.

Detailed and Complete Alternative Models

1. UC2861N: DIP-16 package, similar specifications and features as UC2861DWG4.
2. UC3842: SOIC-8 package, higher output current capability, similar functionality.
3. UC3843: SOIC-8 package, higher output voltage range, similar functionality.

These alternative models offer similar functionality and can be considered as substitutes for the UC2861DWG4 in various applications.

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