KA7500C

FAIRCHILD SEMICONDUCTOR  KA7500C  控制器, PWM, 40V-7V电源, 300 kHz, 5V/250mA输出, DIP-16

The is a SMPS Controller 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 1 to 300kHz. The precision of voltage reference VREF is improved up to ±1% with trimming. This provides a better output voltage regulation.

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Uncommitted output TR for 200mA Sink or source current

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Output control for push-pull or single-ended operation

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Variable duty cycle by dead-time control pin 4 complete PWM control circuit

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On-chip oscillator with master or slave operation

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Internal circuit prohibits double pulse at either output