The KA7500C is used for the control circuit of the pulse-width modulation switching regulator. The KA7500C consists of 5V reference voltage circuit, two error amplifiers, flip flop, an output control circuit, a PWM comparator, a dead-time comparator and an oscillator.

This device can be operated in the switching frequency of 1kHz to 300kHz. The precision of voltage reference (V_REF) is improved up to ±1% with trimming. This provides a better output voltage regulation. The operating temperature range is -25°C - +85°C

• Internal Regulator Provides a Stable 5V Reference Supply Trimmed to ±1% Accuracy
• Uncommitted Output TR for 200mA Sink or Source Current
• Output Control for Push-Pull or Single-Ended Operation
• Variable Duty Cycle by Dead-Time Control (Pin 4) Complete PWM Control Circuit
• On-Chip Oscillator with Master or Slave Operation
• Internal Circuit Prohibits Double Pulse at Either Output