RT8203 PDF

Controllers for Notebook Computers. General D escription. The RT dual step-down, switch-mode power-supply. SMPS controllers generate logic-supply voltages in. The RT include two pulse-.

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These devices feature two linear regulators providing 5V and 3. Each linear regulator provides up to mA output current with automatic linear regulator bootstrapping to the main SMPS outputs. The RT include on-board power-up sequencing, a power good PGOOD output, internal soft-start, and soft-shutdown output discharge that prevents negative voltages on shutdown. RichTek's proprietary Mach-PWM TM "instant-on" response, constant on-time PWM control scheme operates without sense resistors and provides ns response to load transients while maintaining a relatively constant switching frequency.

The unique ultrasonic mode maintains the switching frequency above 25kHz, which eliminates noise in audio applications. Other features include diode-emulation, which maximizes efficiency in light-load applications, and fixed-frequency PWM mode, which reduces RF interference in sensitive applications. Invalid number! Key Spec. Please confirm with distributor or sales window for actual stock status.

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