• 2.7V – 18V Operating Voltage, 30V (Max)
• Ultra Low RDS(ON): 42 mΩ RON (Typical)
• 0.6A to 5.3A Adjustable Current Limit (±8%)
• IMON Current Indicator Output (±8%)
• 115μA Operating IQ (Typical)
• Shutdown Current: 15 µA (VIN = 12 V, typ.)
• Reverse Current Blocking
• Programmable dV/dt Control
• Power Good and Fault Outputs
• -40°C to 125°C Junction Temperature Range
• Compact Package: QFN3x4-20

The SY28846A is a highly integrated smart switch and power management device with a full suite of protection functions, including a low-power device sleep (DevSleep) mode. Its wide operating input voltage range of 2.7V to 18V makes it ideal for the control of many popular DC BUS voltages.

Integrated back-to-back FETs 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 over current, 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. Precise programmable and the low IQ DevSleep mode simplify SSD power management design.

The SY28846A 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.