SMPS控制器 SMPS Controller
Description
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 VREF is improved up to ±1% with trimming. This
provides a better output voltage regulation. The operating temperature range is -25°C ~ +85°C.
Features
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