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Automotive 2.95V to 6V, 6A, 2MHz Synchronous Buck Converter


Package | PIN: WQFN (RTE) | 16
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $3.87
10-24 $3.48
25-99 $3.25
100-249 $2.91
250-499 $2.72
500-749 $2.37
750-999 $2.05
1000+ $2.01


  • Qualified for Automotive Applications
  • AEC Q-100 Qualified With the Following Results:
    • Device Temperature Grade 1: Ambient Operating Temperature Range of –40°C to+125°C
    • Device HBM ESD Classification Level H2
    • Device CDM ESDClassification 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 over temperature (–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 WQFN package
  • Create a custom design using the TPS54618-Q1 with the WEBENCH® Power Designer

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Texas Instruments  TPS54618QRTERQ1

The TPS54618-Q1 device is a full-featured 6-V, 6-A, synchronousstep-down current-mode converter with two integrated MOSFETs.

The TPS54618-Q1 enables small designs by integrating the MOSFETs,implementing current-mode control to reduce external component count, reducing inductor size byenabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small, 3-mm ×3-mm, thermally-enhanced WQFN package.

The TPS54618-Q1 provides accurate regulation for a variety of loads withan accurate ±1% voltage reference (VREF) over temperature.

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

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming thethreshold with a resistor network on the enable pin. The output-voltage start-up ramp is controlledby the slow-start pin. An open-drain power-good signal indicates the output is within 93% to 107%of its nominal voltage.

Frequency foldback and thermal shutdown protect the device during an overcurrentcondition.