Description

The KA3525 is a monolithic integrated circuit designed as a high-performance pulse-width modulation (PWM) controller optimized for use in switch-mode power supplies (SMPS), DC-DC converters, motor controllers, inverters, lighting control, and other power-management applications. It integrates all the key control functions — including a precision reference, error amplifier, PWM comparator, oscillator, soft-start, under-voltage lockout (UVLO) and totem-pole output drivers — necessary to build a fixed-frequency voltage-mode PWM regulator with minimal external components.

FEATURES

• Supply Voltage (Vcc): ~7 V to 20 V (operating)
• Oscillator Frequency: ~60 Hz to ~430 kHz (adjustable)
• Reference Voltage: ~5 V ±1%
• Duty Cycle (Max): ~49% (theoretical)
• Output Drive: Dual transistor drivers with source/sink capability
• Under voltage Lockout: Yes (with hysteresis)
• Operating Temp. Range: ~0 °C to +70 °C TA (industrial/commercial typical)
• Sync & Dead-Time Control: Yes (external programming)

SPECIFICATION

• Dimension: 19.8 × 7.62 × 3.3 mm
• Additional information
• Gross weight: 1.8 g
• Manufacturer part number: KA3525