• 2.7V – 18V Operating Voltage, 30V (Max)
• Ultra-low R_DS(ON): 42mΩ R_ON (Typical)
• 0.6A to 5.3A Adjustable Current Limit (±8%) 
• IMON Current Indicator Output (±8%)
• 115μA Operating I_Q (Typical) 
• Reverse Current Blocking
• Programmable dV/dt Control
• Power Good and Fault Outputs
• 4ms Fault Timer Then Shutoff
• -40℃ to 125℃ Junction Temperature Range
• Compact Package: QFN3x4-20

The SY28846B protection switch is a compact power management device with a full suite of protection functions, including a low-power device sleep (DevSleep) mode. The wide operating range allows control of many popular DC BUS voltages.

Integrated back-to-back MOSFETs provide bidirectional current control, making the device well-suited for systems with load-side energy reservoirs that must not drain back to a failed supply BUS. The device provides many programmable features, including overcurrent, dVo/dt ramp, over-voltage, and under-voltage thresholds using very few external components.

The device provides PGOOD, /FLT and precise current monitor output for system status monitoring and downstream load control. The precise programmable and low IQ DevSleep mode simplifies SSD power management design.

The SY28846B provides true reverse current blocking by monitoring VIN < (VOUT - 25mV). This function supports swift change over to a boosted voltage energy storage element in systems with higher backup voltage than the BUS voltage.

The SY28846B also integrates latch-off protection.