TPS54618QRTERQ1

1 FEATURES

• Qualified for Automotive Applications

• AEC-Q100 Qualified With the Following Results:

  – Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range

  – Device HBM ESD Classification Level H2

  – Device CDM ESD Classification Level C4B

• Two 12-mΩ (Typical) MOSFETs for High Efficiency at 6-A Loads

• 300-kHz to 2-MHz Switching Frequency

• 0.8-V ±1% Voltage Reference Overtemperature (–40°C to 150°C)

• Synchronizes to External Clock

• Adjustable Slow Start and Sequencing

• UV and OV Power-Good Output

• Thermally Enhanced 3-mm × 3-mm 16-pin QFN

2 APPLICATIONS

• Low-Voltage, High-Density Power Systems

• Point-of-Load Regulation for HighPerformance DSPs, FPGAs, ASICs, and Microprocessors

• Broadband, Networking, and Optical Communications Infrastructure

3 DESCRIPTION


The TPS54618RTE-Q1 SWFT integrated circuit is a full-featured 6-V,6-A, synchronous step-down current-mode converter with two integrated MOSFETs.
The TPS54618RTE-Q1 enables small designs by integrating the MOSFETs, implementing current-mode control to reduce external component count. reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small 3-mm × 3-mm thermally enhanced QFN package.
The TPS54618RTE-Q1 provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) overtemperature.
The integrated 12-mΩ MOSFETs and 515-uA typical supply current maximize efficiency. Using the enable pin reduces the shutdown supply current to 5.5 uA when the device enters shutdown mode.
The undervoltage lockout internal setting is 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The slow-start pin controls the output-voltage start-up ramp. An open-drain power-good signal indicates when the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protect the device during an overcurrent condition.
The SwitcherProT software tool, available at www.ti.com/switcherpro,supports the TPS54618RTE-
Q1.

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