Richtek RTQ2806A | Demoboard DSQ2806A

Description

The RTQ2806A is a high-performance, synchronous step-down converter that can deliver up to 6A output current with a wide input supply voltage range of 3.5V to 17V. The device integrates low RDSON power MOSFETs, an accurate 0.6V 1% reference over the full operating junction temperature range and an integrated diode for the bootstrap circuit, offering a very compact solution.The RTQ2806A adopts Advanced Constant On-Time (ACOT®) control architecture that provides excellent transient performance and reduces the externalcomponent count of external components. In steady states, the ACOT® can operate at nearly constant switching frequency over line, load and output voltage ranges, making the EMI filter design easier. The device offers a variety of functions provide more design flexibility. The selectable switching frequency, current limit level and PWM operation modes make the RTQ2806A easy-to-use over wide application range.An independent enable control input pin and powergood indicator are also provided for easy sequence control. The device provides a programmable softstart-up by an external capacitor connected to the SS/TR pin to control the inrush current during start-up.

Features

• Wide Input Voltage Range
• 2.7V to 17V with External 3.3V VCC Bias
• 3.5V to 17V with Internal VCC Bias
• Output Voltage from 0.6V to 5.5V
• 0.6V  1% Voltage Reference from −40°C to 150°C Junction Temperature Range
• ACOT® Control for Excellent Transient Performance
• Stable with Ceramic Output Capacitors
• Selectable FCCM or PSM Operation at light load
• Selectable Operation Switching Frequency (660kHz/1100kHz/2200kHz)
• Non-Latch for OCP, OVP, UVP, UVLO, and OTP
• Power-Good Indicator
• Enable Control
• Programmable Soft-Start Time with a Default 2.2ms
• Programmable Valley Current Limit Level
• Monotonic Start-Up into Pre-Biased Outputs
• Output Voltage Tracking
• Small 14-Lead WQFN (2x3) (FC) Package (Pin Pitch 0.5mm)

Typical applications

• Point of Load (POL) Power Modules, High Density DC-DC Converters
• Servers, Storage and Network Equipment, Telecom Infrastructure

More information

• Datasheet
• IC product information