UC2823BN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance PWM Controller
• Package: DIP-16 (Dual In-Line Package with 16 pins)
• Essence: Regulates and controls the power supply in various applications
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Input Voltage: 10V to 20V
• Output Voltage: Adjustable, typically 5V to 15V
• Operating Temperature: -40°C to +85°C
• Switching Frequency: 100kHz to 1MHz
• Maximum Duty Cycle: 50%
• Protection Features: Overvoltage, Undervoltage, Overcurrent, Thermal Shutdown

Detailed Pin Configuration

1. VREF: Reference voltage input
2. COMP: Error amplifier output
3. CS: Current sense input
4. RT/CT: Timing components connection
5. GND: Ground
6. VCC: Supply voltage input
7. SYNC: Synchronization input
8. OSC: Oscillator timing capacitor connection
9. SS/TR: Soft-start/tracking control
10. OUT: Output voltage
11. FB: Feedback input
12. INV: Inverting input
13. NC: No connection
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 supplies
• Supports adjustable output voltage
• Offers protection against overvoltage, undervoltage, overcurrent, and thermal shutdown
• Synchronization input for multiple ICs
• Soft-start/tracking control for smooth startup

Advantages and Disadvantages

Advantages

• High-performance and reliable power management solution
• Precise regulation and control of power supplies
• Adjustable output voltage for flexibility
• Protection features ensure safe operation
• Synchronization capability for multiple ICs

Disadvantages

• Limited maximum duty cycle (50%)
• Requires external timing components for operation

Working Principles

The UC2823BN is a high-performance PWM controller that operates by regulating the duty cycle of a switching transistor. It uses feedback from the output voltage to adjust the duty cycle and maintain a stable output. The error amplifier compares the feedback voltage with a reference voltage, generating an error signal that controls the duty cycle.

By adjusting the duty cycle, the UC2823BN regulates the output voltage within a specified range. It also provides protection against overvoltage, undervoltage, overcurrent, and thermal shutdown, ensuring the safety of the power supply and connected devices.

Detailed Application Field Plans

The UC2823BN is widely used in various applications requiring precise power management. Some common application fields include:

1. Switching Power Supplies: The UC2823BN is commonly used in switch-mode power supplies to regulate and control the output voltage efficiently.

2. Battery Chargers: It can be employed in battery chargers to provide accurate charging voltage and current control.

3. LED Lighting: The UC2823BN is suitable for LED lighting applications, enabling precise control of brightness and efficiency.

4. Motor Control: It finds application in motor control circuits, allowing efficient and controlled operation of motors.

5. Audio Amplifiers: The UC2823BN can be utilized in audio amplifiers to regulate the power supply and enhance audio performance.

Detailed and Complete Alternative Models

1. UC3823BN: Similar to UC2823BN but with enhanced protection features and wider operating temperature range.
2. UC1523BN: Lower-cost alternative with basic power management capabilities.
3. UC2825BN: Higher-performance version with increased switching frequency and improved efficiency.

These alternative models offer similar functionality to the UC2823BN but may have additional features or variations in specifications to suit specific application requirements.

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