RT2875B

® RT2875A/B 3A, 36V, Synchronous Step-Down Converter General Description The RT2875A/B is a high efficiency, current-mode synchronous DC/DC step-down converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V. The device integrates 95mΩ high-side and 70mΩ low-side MOSFETs to achieve high conversion efficiency. The current-mode control architecture supports fast transient response and simple external compensation. A cycle-by-cycle current limit function provides protection against shorted output and an external soft-start eliminates input current surge during start-up. The RT2875A/B provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection and thermal shutdown. The RT2875A/B is available in the thermal enhanced TSSOP-14 (Exposed Pad) package. Pin Configurations (TOP VIEW) SW SW PGND RT/SYNC AGND RLIM FB 14 2 13 3 12 4 PGND 11 5 10 6 15 9 78 BOOT VIN VIN PGOOD EN SS COMP TSSOP-14 (Exposed Pad) Features  3A Output Current  Internal N-MOSFETs  Current Mode Control  Adjustable Switching Frequency : 300kHz to 2.1MHz  Adjustable Current Limit : 1.5A to 6A  Synchronous to External Clock : 300kHz to 2.1MHz  Adjustable Output Voltage from 0.6V to 24V  High Efficiency Up to 95%  Stable with Low ESR Ceramic Output Capacitors  Cycle-by-Cycle Current Limit  Input Under-Voltage Lockout  Output Under-Voltage Protection  Thermal Shutdown  AEC-Q100 Grade 2 C...