RICHTEK RT6202AHGSP 直流-直流开关降压逐步递减稳压器, 可调, 4.5V-18V输入, 765mV-8V输出, 5A输出, SOP-8
The is a 5A, 18V, 650KHz, ACOT synchronous step-down converter in 8 pin SOP package. It is a synchronous step-down DC/DC converter with Advanced Constant On-Time ACOT mode control. It achieves high power density to deliver up to 5A output current from a 4.5V to 18V input supply. The ACOT mode offers an optimal transient response over a wide range of loads and all kinds of ceramic capacitors which allows the device to adopt very low ESR output capacitor for ensuring performance stabilization. In addition, RT6202A keeps an excellent constant switching frequency under line and load variation and the integrated synchronous power switches with the ACOT mode operation provides high efficiency in whole output current load range. Cycle by cycle current limit provides an accurate protection by a valley detection of low side MOSFET and external soft-start setting eliminates input current surge during start-up. Protection functions include thermal shutdown.
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- 35mohm internal low side N-MOSFET
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- Support all ceramic capacitors
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- Up to 95% efficiency
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- Discontinuous operating mode at light load
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- Adjustable output voltage from 0.765V to 8V
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- Adjustable soft start
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- Input undervoltage lock-out
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- PSM mode operation
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- UVP trim hiccup operation