Richtek RT6204 | Demoboard AN049

Description

The RT6204 is a 60V, 500mA, 350kHz, high-efficiency, synchronous step-down DC-DC converter with an input-voltage range of 5.2V to 60V and a programmable output-voltage range of 0.8V to 50V. It features current-mode control to simplify external compensation and to optimize transient response with a wide range of inductors and output capacitors. High efficiency can be achieved through integrated N-MOSFETs, and pulse-skipping mode at light loads. With EN pin, power-up sequence can be more flexible and shutdown quiescent current can be reduced to < 3μA.The RT6204 features cycle-by-cycle current limit for over-current protection against short-circuit outputs, and user-programmable soft-start time to prevent inrush current during startup. It also includes input under-voltage lockout, output under-voltage, and thermal shutdown protection to provide safe and smooth operation in all operating conditions.

Features

• 0.8V Feedback Reference Voltage with ±1.5% Accuracy
• Wide Input Voltage Range : 5.2V to 60V
• Output Current : 500mA
• Integrated N-MOSFETs
• Current-Mode Control
• Fixed Switching Frequency : 350kHz
• Programmable Output Voltage : 0.8V to 50V
• Low < 3μA Shutdown Quiescent Current
• Up to 92% Efficiency
• Pulse-Skipping Mode for Light-Load Efficiency
• Programmable Soft-Start Time
• Cycle-by-Cycle Current Limit Protection
• Input Under-Voltage Lockout, Output Under-Voltage and Thermal Shutdown Protection

Typical applications

• Industrial Process Control, Metering, and Security Systems/ High-Voltage LDO Replacement/ General Purpose Wide Input Voltage Regulation
• 4-20mA Loop-Powered Sensors
• Telecommunications Systems
• OBD-II Port Power Supplies/ Low-Power Standby or Bias Voltage Supplies/ Commercial Vehicle Power Supplies

More information

• Datasheet
• IC product information