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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 external-component 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 power-good indicator are also provided for easy sequence control. The device provides a programmable soft-start-up by an external capacitor connected to the SS/TR pin to control the inrush current during start-up.

The RTQ2806A provides complete protection functions including input undervoltage lockout, output undervoltage protection, output overvoltage protection, overcurrent protection, and over-temperature protection. The RTQ2806A is available in a thermally enhanced WQFN-14TL 2x3 (FC) package.

The recommended junction temperature range is -40°C to 150°C.

Applications

  • Servers, Storage and Network Equipment
  • Telecom Infrastructure
  • Point of Load (POL) Power Modules
  • High Density DC-DC Converters
Key Spec.
RTQ2806A
Status Active
Vin (min) (V) 2.7
Vin (max) (V) 17
Number of Outputs 1
Vout (min) (V) 0.6
Vout (max) (V) 5.5
Output Adj. Method Resistor
Iout (max) (A) 6
Current Limit (typ) (A) 6
Freq (min) (kHz) 660
Freq (max) (kHz) 2200
Ext Sync No
Ron_HS (typ) (mOhm) 22.6
Ron_LS (typ) (mOhm) 8.1
Iq (typ) (mA) 1.05
Features ACOT Control;Adjustable Current Limit;Adjustable Frequency;Adjustable Soft-Start;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;Power Good;Selectable (PSM or PWM);Stable with Ceramic Capacitor;UVP
Package Type WQFN2x3-14T(FC)
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)
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RTQ2806AGQWFWQFN2x3-14T(FC)1,500 Request Digikey 1,499 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
Evaluation Board
Part NumberDistributorStockBuy From Authorized Distributor
EVB_RTQ2806AGQWF Digikey Lead-Time: 14 weeks Not Available
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
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