Richtek RT2875AQGCP | Demoboard AN047

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.

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 Certification
• RoHS Compliant and Halogen Free

Typical applications

• Digital Set Top Boxes/ Broadband Communications
• Point of Load Regulator in Distributed Power Systems
• Vehicle Electronics

More information

• Datasheet
• IC product information