RICHTEK RT2853AHGQW 直流-直流开关降压, 逐步递降稳压器, 可调, 4.5V-18V输入, 765mV-7V/3A输出, 650kHz, WQFN-16 新
The is a 3A, 18V, 650KHz, ACOT synchronous step-down converter in 16 pin WQFN package. The RT2853A are high-performance 650KHz 3A step-down regulators with internal power switches and synchronous rectifiers. It feature quick transient response using their Advanced Constant On-Time ACOT control architecture that provides stable operation with small ceramic output capacitors and without complicated external compensation, among other benefits. The input voltage range is from 4.5V to 18V and the output is adjustable from 0.765V to 7V. The ACOT control improves upon other fast response constant on-time architectures, achieving nearly constant switching frequency over line, load and output voltage ranges. Since there is no internal clock, response to transients is nearly instantaneous and inductor current can ramp quickly to maintain output regulation without large bulk output capacitance.
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