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2.95V to 6V Input, 6A Synchronous Step-Down SWIFT™ Converter with Hiccup Current Limit

Inventory: 2,500

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Packaging information

Package | Pins WQFN (RTE) | 16
Operating temperature range (℃) S (-40 to 150)
Package qty | Carrier: 250 | SMALL T&R
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Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • Two 12-mΩ (typical) MOSFETs for high-efficiency 6-A continuous output current
  • 200-kHz to 2-MHz Switching frequency
  • 0.6-V ±1% Voltage reference over temperature (–40°C to 150°C)
  • Synchronizes to external clock
  • Start-Up with prebiased voltage
  • Power good output
  • Adjustable slow start and sequencing
  • Cycle-by-cycle current limit and hiccup current protection
  • Adjustable input voltage UVLO
  • Thermally enhanced 16-pin 3-mm × 3-mm WQFN (RTE)
  • Create a custom design using the TPS54678 with the WEBENCH® Power Designer

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TPS54678 device is a full-featured 6-V, 6-A, synchronous step-down current mode converterwith two integrated MOSFETs.

TPS54678 enables small designs by integrating the MOSFETs, implementing current modecontrol to reduce external component count, reducing inductor size by enabling up to 2-MHzswitching frequency, and minimizing the IC footprint with a small 3-mm × 3-mm thermally enhancedWQFN package.

TPS54678 provides accurate regulation for a variety of loads with an accurate ±1% voltagereference (VREF) over temperature.

Efficiency is maximized through the integrated 12-mΩ MOSFETs. Using the enable (EN) pin,shutdown supply current is reduced by disabling the device.

The output voltage start-up ramp is controlled by the soft-start (SS) pin that can alsobe configured for sequencing or tracking. Monotonic start-up is achieved with prebiased voltage.Undervoltage lockout can be increased by programming the threshold with a resistor divider on theenable pin. An open-drain power good signal indicates the output is within 93% to 105% of itsnominal voltage.

Cycle-by-cycle current limit, hiccup overcurrent protection and thermal shutdown protectthe device during an overcurrent condition.

Qty Price
1-99 $2.42
100-249 $1.97
250-999 $1.55
1,000+ $1.32

Alternative carriers

Part number TPS54678RTER
Package qty | Carrier 3,000 | LARGE T&R
Custom reel may be available
Inventory 13,602
Qty | Price (USD) 1ku | $1.14