The UCC28C4x family are high performance current-mode PWM controllers. They are enhanced
BiCMOS versions with pin-for-pin compatibility to the industry standard UC284xA family and UC284x
family of PWM controllers. In addition, a lower startup voltage versions of 7 V is offered as
Providing necessary features to control fixed frequency, peak current mode power
supplies, this family offers several performance advantages. These devices offer high frequency
operation up to 1 MHz with low start up and operating currents, thus minimizing start up loss and
low operating power consumption for improved efficiency. The devices also feature a fast current
sense to output delay time of 35 ns, and a ±1-A peak output current capability with improved rise
and fall times for driving large external MOSFETs directly.
The UCC28C4x family is offered in the 8-pin SOIC (D) package.
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