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The RTQ2807A is a high-performance, synchronous step-down converter that can deliver up to 6A output current with a wide input supply voltage range from 3.5V to 17V. The device integrates low R<sub>DSON</sub> power MOSFETs, an accurate 0.9V ± 1% reference over the full operating junction temperature range, and an integrated diode for the bootstrap circuit, offering a very compact solution.<br />The RTQ2807A adopts an Advanced Constant On-Time (ACOT<sup>®</sup>) control architecture that provides excellent transient performance and reduces the count of external components. In steady states, the ACOT<sup>®</sup> can operate at nearly constant switching frequency across varying line, load, and output voltage ranges, which making the EMI filter design easier. <br />The device offers a variety of functions that enhance design flexibility. The selectable switching frequency, current limit level, and PWM operation modes make the RTQ2807A easy-to-use across a wide range of applications. An independent enable control input pin and a power-good indicator are also provided for simplified sequencing control. The device provides a programmable soft-start-time by an external capacitor connected to the SS/TR pin to control the inrush current during startup.<br />The RTQ2807A provides comprehensive protection functions, including input undervoltage lockout, output undervoltage protection, output overvoltage protection, overcurrent protection, and over-temperature protection. The RTQ2807A is available in a thermally enhanced WQFN-14TL 2x3 (FC) package. The recommended junction temperature range is from -40°C to 150°C.
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- 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 0.9V to 5.5V
- 0.9V ± 1% Voltage Reference Over a -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)
- Latch-Off for OCP, OVP, UVP, UVLO, and OTP
- Power-Good Indicator
- Enable Control
- Programmable Soft-Start Time with a Default of 1.5ms
- 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)
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Servers, Storage, and Network Equipment<br />Telecom Infrastructure<br />Point of Load (POL) Power Modules<br />High Density DC-DC Converters
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