UC3823BN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance PWM Controller
• Package: DIP-16 (Dual In-Line Package)
• Essence: Regulates and controls power delivery in various applications
• Packaging/Quantity: Available in tubes or reels, quantity varies based on supplier

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 5V to 20V
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to +85°C
• Switching Frequency: Adjustable up to 1MHz
• Current Limit: Adjustable up to 2A

Detailed Pin Configuration

The UC3823BN IC has a total of 16 pins. The pin configuration is as follows:

1. VREF: Reference voltage input
2. COMP: Error amplifier output
3. FB: Feedback voltage input
4. RT/CT: Timing resistor/capacitor connection
5. CT: Timing capacitor connection
6. RT: Timing resistor connection
7. OSC: Oscillator timing capacitor connection
8. GND: Ground reference
9. SYNC: Synchronization input
10. VCC: Positive supply voltage
11. OUT: Output voltage
12. SS/TR: Soft-start/tracking control
13. INV: Inverting input
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

• High-performance pulse-width modulation (PWM) controller
• Provides precise regulation and control of power delivery
• Adjustable switching frequency for optimal performance
• Current limit protection for enhanced safety
• Soft-start feature for smooth power-up operation
• Synchronization input for multi-phase operation
• Error amplifier for accurate feedback control

Advantages and Disadvantages

Advantages: - High-performance and reliable power management - Flexible and adjustable parameters for customization - Wide input and output voltage range - Comprehensive protection features - Suitable for various applications

Disadvantages: - Requires external components for complete functionality - Limited pin configuration options - May require additional circuitry for specific applications

Working Principles

The UC3823BN is a high-performance PWM controller that regulates and controls power delivery in various applications. It operates by comparing the feedback voltage (FB) with a reference voltage (VREF) to generate an error signal. This error signal is then amplified and used to adjust the duty cycle of the output waveform.

By adjusting the timing resistor (RT) and timing capacitor (CT), the switching frequency of the PWM controller can be set. The UC3823BN also provides current limit protection, soft-start functionality, and synchronization input for multi-phase operation.

Detailed Application Field Plans

The UC3823BN is widely used in power management applications, including but not limited to:

1. Switching Power Supplies: Used to regulate and control the output voltage in various electronic devices.
2. LED Lighting Systems: Provides efficient power delivery and dimming control for LED lighting applications.
3. Motor Control: Enables precise control of motor speed and direction in industrial and automotive applications.
4. Battery Charging: Facilitates efficient charging of batteries in portable devices and electric vehicles.
5. Audio Amplifiers: Ensures stable power supply for audio amplification circuits.

Detailed and Complete Alternative Models

1. UC3823A: Similar to UC3823BN, but with different pin configuration (SOIC-16 package).
2. UC3823B: Improved version of UC3823BN with enhanced performance and additional features.
3. UC3823C: Compact version of UC3823BN with reduced pin count (8-pin package).

These alternative models offer similar functionality and can be used as substitutes for the UC3823BN in various applications.

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