TPS57114C-Q1

• 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 2
  • Device CDM ESD classification level C4B
• Two 12-mΩ (typical) MOSFETs for high efficiency at 4-A loads
• 200-kHz to 2-MHz switching frequency
• 0.8 V ± 1% voltage reference over temperature (–40°C to +150°C)
• Synchronizes to external clock
• Adjustable slow start and sequencing
• UV and OV power-good output
• –40°C to +150°C operating junction temperature range
• Thermally enhanced 3-mm × 3-mm 16-pin WQFN
• Pin-compatible to TPS54418

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The TPS57114C-Q1 device is a full-featured 6-V, 4-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS57114C-Q1 device 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 TPS57114C-Q1 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (V_ref) over temperature.

Efficiency is maximized through the integrated 12-mΩ MOSFETs and 515-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 5.5 µA by entering a shutdown mode.

The internal undervoltage lockout setting is 2.45 V, but programming the threshold with a resistor network on the enable pin can increase the setting. The slow-start pin controls the output-voltage start-up ramp. An open-drain power-good signal indicates the output is within 93% to 107% of the nominal voltage.

Frequency foldback and thermal shutdown protect the device during an overcurrent condition.