SG3524 / UC3524 Regulating Pulse Width Modulator (SG 3524) [Original]

SG3524 / UC3524 Regulating Pulse Width Modulator IC

The SG3524 / UC3524 is a highly integrated Regulating Pulse Width Modulator (PWM) controller, essential for modern power supply designs. This monolithic integrated circuit provides all the necessary control circuitry for efficient regulating power supply inverters and switching regulators. Housed in a compact 16-pin dual-in-line package, it simplifies complex power management tasks. It incorporates a precise voltage reference, an error amplifier, and a stable oscillator for reliable operation. The device also features a pulse-width modulator, a pulse steering flip-flop, and dual alternating output switches. Advanced current-limiting and shut-down circuitry are built-in for enhanced protection and system reliability. Designed for commercial applications, it operates effectively within a 0°C to +70°C temperature range. Its comprehensive feature set makes it a versatile choice for various power control applications.

Specifications:

• Supply Voltage Range: 8V to 40V
• Output Type: Dual Alternating, Single-Ended or Push-Pull
• Operating Temperature: 0°C to +70°C
• Package Type: 16-Pin Dual In-Line Package (DIP)
• Line Regulation: 0.2% Max
• Load Regulation: 0.2% Max
• Temperature Stability: 1% Max Variation
• Internal Reference Voltage: 5.1V (Typical)
• Oscillator Frequency: Up to 300 kHz
• Integrated Functions: Voltage Reference, Error Amplifier, Oscillator, PWM, Flip-Flop, Output Switches, Protection Circuitry

Key features and benefits:

• Complete monolithic integrated circuit for comprehensive power control
• Integrated voltage reference, error amplifier, and stable oscillator
• Built-in pulse-width modulator and pulse steering flip-flop
• Dual alternating output switches for flexible power stage configurations
• Includes current-limiting and shut-down protection circuitry for safety
• Supports single-ended or push-pull output configurations
• Achieves excellent line and load regulation of 0.2% maximum
• Maintains stable performance with 1% maximum temperature variation

Applications:

• Switching regulators (both positive and negative polarity)
• Transformer-coupled DC-to-DC converters
• Transformerless voltage doublers and polarity converters
• Uninterruptible Power Supplies (UPS) and battery chargers
• General power control and inverter applications

Package Includes:

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