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Richtek RTQ2820A | Demoboard DSQ2820A-00
20A, 17V, ACOT® High-Efficiency Synchronous Step-Down Converter
Overview
| Topology | Buck Converter |
| Input voltage | 2.7-17 V |
| Output 1 | 5.5 V / 20 A |
| IC revision | 1 |
Description
The RTQ2820A is a high-performance, synchronous buck converter that can deliver up to 20A output current with a wide input supply voltage range from 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.
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 0C to 70C Junction Temperature Range
- 0.6V 1% Voltage Reference from −40C to 150C 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
Typical applications
- High Density DC-DC Converters
- Point of Load (POL) Power Modules
- Telecom Infrastructure, Servers, Storage, and Network Equipment
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | Material | LR(µH) | fres(MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCC SMT High Current Cube Inductor, 0.47 µH, 40.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance0.47 µH | Performance Rated Current40.2 A | Saturation Current @ 10%44.4 A | Saturation Current @ 30%116.2 A | DC Resistance1.85 mΩ | MaterialIron Powder | Rated Inductance0.46 µH | Self Resonant Frequency140 MHz | ||||
| WE-HCC SMT High Current Cube Inductor, 0.68 µH, 40.2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance0.68 µH | Performance Rated Current40.2 A | Saturation Current @ 10%39.3 A | Saturation Current @ 30%63.5 A | DC Resistance1.85 mΩ | MaterialIron Powder | Rated Inductance0.66 µH | Self Resonant Frequency120 MHz | ||||
| WE-HCC SMT High Current Cube Inductor, 1 µH, 32.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance1 µH | Performance Rated Current32.5 A | Saturation Current @ 10%28.5 A | Saturation Current @ 30%55.1 A | DC Resistance2.5 mΩ | MaterialIron Powder | Rated Inductance0.94 µH | Self Resonant Frequency100 MHz | ||||
| WE-HCC SMT High Current Cube Inductor, 1.5 µH, 26.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCC SMT High Current Cube Inductor | Inductance1.5 µH | Performance Rated Current26.9 A | Saturation Current @ 10%21.9 A | Saturation Current @ 30%54.5 A | DC Resistance3.5 mΩ | MaterialIron Powder | Rated Inductance1.36 µH | Self Resonant Frequency120 MHz |