DESCRIPTION
The UTC UC4601 is a PWM step-down DC/DC controller. It has a low supply current. The output voltage can be adjusted with external components. The UTC UC4601 contains a high precision band-gap voltage reference, a PWM control circuit, a soft-start circuit, a protection circuit, an oscillator, an error amplifier with built-in compensation network and input/output voltage detection circuits. The UTC UC4601 based DC/DC converter can performance well when maintaining stability, which is due to its built-in state-of-art control algorithm. Further, if the term of maximum duty cycle retains on a certain time, the embedded protection circuits restart the operation with soft-start and repeat until the maximum duty cycle condition is released. Finally, the internal UVLO function blocks potentially unstable output when the input voltage reaches the UVLO threshold or less. This is aiming at making this circuit standby for low power consumption. The UTC UC4601 can be applied in battery-powered equipment, hand-held communication equipment, cameras, video instruments such as VCRs, camcorders, household electrical appliances.
Unisonic Technologies
