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Overview
| Topology | Buck Converter |
| Input voltage | 3.5-17 V |
| Switching frequency | 660-2200 kHz |
| Output 1 | 5.5 V |
| IC revision | 00 |
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
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | RDC max.(mΩ) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-LHMI SMT Power Inductor, 0.22 µH, 23 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance0.22 µH | Performance Rated Current23 A | Saturation Current @ 10%29.9 A | Saturation Current @ 30%54.3 A | – | Self Resonant Frequency149 MHz | – | DC Resistance2.8 mΩ | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 0.33 µH, 17.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance0.33 µH | Performance Rated Current17.8 A | Saturation Current @ 10%27.1 A | Saturation Current @ 30%47 A | – | Self Resonant Frequency124 MHz | – | DC Resistance3.9 mΩ | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 0.47 µH, 16.6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance0.47 µH | Performance Rated Current16.6 A | Saturation Current @ 10%21.4 A | Saturation Current @ 30%37.8 A | – | Self Resonant Frequency91 MHz | – | DC Resistance4.2 mΩ | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 0.68 µH, 15.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance0.68 µH | Performance Rated Current15.1 A | Saturation Current @ 10%15.9 A | Saturation Current @ 30%31.6 A | – | Self Resonant Frequency72 MHz | – | DC Resistance5.5 mΩ | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 1 µH, 11.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance1 µH | Performance Rated Current11.4 A | Saturation Current @ 10%14.7 A | Saturation Current @ 30%29 A | – | Self Resonant Frequency54 MHz | – | DC Resistance10 mΩ | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 1.5 µH, 9.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance1.5 µH | Performance Rated Current9.1 A | Saturation Current @ 10%11.2 A | Saturation Current @ 30%27.6 A | – | Self Resonant Frequency45 MHz | – | DC Resistance15 mΩ | MountSMT | ||||
| WE-LHMI SMT Power Inductor, 2.2 µH, 7.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance2.2 µH | Performance Rated Current7.7 A | Saturation Current @ 10%10 A | Saturation Current @ 30%19.1 A | – | Self Resonant Frequency32 MHz | – | DC Resistance20 mΩ | MountSMT | ||||
 | WE-HCI SMT Flat Wire High Current Inductor, 3.3 µH, 8.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance3.3 µH | Performance Rated Current8.1 A | Saturation Current @ 10%4.5 A | Saturation Current @ 30%11 A | DC Resistance17.2 mΩ | Self Resonant Frequency43 MHz | MaterialSuperflux | DC Resistance18.92 mΩ | MountSMT |