RT6234BHGQW

RICHTEK  RT6234BHGQW  直流-直流开关降压, 逐步递降稳压器, 可调, 4.5V-18V输入, 800mV-6.5V/3A输出, 500kHz, WDFN-8 新

The is a 3A, 18V, 500KHz ACOT step-down converter in 8 pin WDFN package. The RT6234B is a high-efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 18V input supply. The RT6234B adopts ACOT architecture to allow the transient response to be improved and keep in constant frequency. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. Fault conditions also include output under voltage protection and thermal shutdown. It is used in set top box, portable TV, access point router, DSL modem and LCD TV.

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Supply current is 6µAshutdown, 0.8mA quiescent

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0.8V ±2% voltage reference

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Monotonic start-up into pre-biased outputs

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Pulse width modulation PWM mode operation

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High side switch-on resistance is 130mohm and low-side switch-on resistance is 70mohm

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Hiccup mode protection

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Operating temperature range from -40°C to 125°C