The RT8293BHZSP from Richtek is a 3A, 23V, 1.2MHz synchronous step-down converter in 8 pin SOP package. This is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 23V input supply. The RT8293B"s current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The RT8293B provides output under voltage protection and thermal shutdown protection. The low current (<3µA) shutdown mode provides output disconnect, enabling easy power management in battery powered systems. It is used in wireless AP/router, set-top-box, LCD monitors and TVs, green electronics/appliances, point of load regulation of high-performance DSPs, industrial and commercial low power systems.
● ±1.5% high accuracy feedback voltage
● Integrated N-MOSFET switches
● Provides Hiccup mode under voltage protection (UVP), current mode control
● Fixed frequency operation of 1.2MHz, 3µA shutdown supply current
● Adjustable output from 0.8V to 15V, supply current of 1.2mA, output current of 3A
● Up to 95% efficiency, programmable soft-start, 75% maximum duty cycle
● Stable with low ESR ceramic output capacitors, oscillation frequency of 1.2MHz
● Minimum on-time of 100ns
● Input under voltage lockout, output under voltage protection & thermal shutdown protection
● Ambient temperature range from -40°C to 85°C
