loading

The RTQ2820A is a high-performance, synchronous step-down converter that can deliver up to 20A output current with a wide input supply voltage range of 3.5V to 17V. The device integrates low RDS(ON) 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 RTQ2820A adopts Advanced Constant-On-Time (ACOT®) control architecture that provides excellent transient performance and reduces the 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 to provide more design flexibility. The selectable switching frequency, current limit level, PWM operation modes make the RTQ2820A 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 RTQ2820A provides complete protection functions including input undervoltage lockout, output undervoltage protection, output overvoltage protection, overcurrent protection, and thermal shutdown. The RTQ2820A is available in a thermally enhanced WQFN-21TL 3x4 (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.
RTQ2820A
Status Active
Vin (min) (V) 3.5
Vin (max) (V) 17
Vout (min) (V) 0.6
Vout (max) (V) 5.5
Output Adj. Method Resistor
Iout (max) (A) 20
Ext Sync No
Iq (typ) (mA) 1150
Features ACOT Control;Adjustable Current Limit;Adjustable Soft-Start;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OVP;Power Good;SCP;Selectable (PSM or PWM);Stable with Ceramic Capacitor;UVP
Package Type WQFN3x4-21T(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 ± 0.5% Voltage Reference from 0°C to 70°C Junction Temperature Range
  • 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 (600KHz/800KHz/1MHz)
  • Non-Latch for OCP, UVP, UVLO, and OTP Faults, Latch Off for OVP
  • Differential Remote Sense Voltage for High Output Accuracy
  • Power-Good Indicator
  • Enable Control
  • Programmable Soft-Start Time with a Default 1ms
  • Programmable Valley Current Limit Level
  • Monotonic Start-Up into Pre-Biased Outputs
  • Output Voltage Tracking
  • Small 21T-Lead WQFN (3x4) (FC) Package
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RTQ2820AGQWFWQFN3x4-21T(FC)1,500 Request Digikey 1,500 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
Evaluation Board
Part NumberDistributorStockBuy From Authorized Distributor
EVB_RTQ2820AGQWF Digikey Lead-Time: 14 weeks Not Available
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
TOP