SY26171 Datasheet | Silergy

SY26170/SY26171 High Efficiency, 20A, 16V Input Synchronous Step-Down Regulator General Description The SY26170 and SY26171 are high efficiency synchronous step-down DC-DC regulators that feature internal power and synchronous rectifier switches, and are capable of delivering 20A continuous output current over a wide input voltage range from 2.7V to 16V. The output voltage is adjustable: SY26170 from 0.9V to 5.5V and SY26171 from 0.6V to 5.5V. Silergy’s proprietary Instant-PWM™ fast-response, constant on-time (COT) control method supports high input/output voltage ratios (low duty cycles) and responds to load transients within approximately 100ns while maintaining a near-constant operating frequency over line, load, and output voltage ranges. This control method provides stable operation without plex pensation, even with low ESR ceramic output capacitors. The stable internal reference (VREF) provides ±1% accuracy over TJ = -40°C to 125°C, and the differential input sense configuration allows the feedback sensing at the most relevant load point. Internal 8.6mΩ power and 2.5mΩ synchronous rectifier switches provide excellent efficiency for a wide range of applications, especially for low output voltages and low duty cycles. Cycle-by-cycle current limit, input undervoltage lockout, internal soft-start, output undervoltage (UVP) and overvoltage (OVP) protection, and thermal shutdown provide safe operation in all operating conditions. The SY26170 and SY26171 is available in a pact QFN34 package. ‘ Features - Wide Input Voltage Range: ◦ 2.7V to 16V if VCC is Supplied by an External Source ◦ 3.6V to 16V if VCC is Supplied by Internal LDO - Internal 8.6mΩ Power Switch and 2.5mΩ Synchronous Rectifier - Accurate Feedback Setpoint: ±1% from -40C to 125°C - Remote...