1 Features

1• 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

• –40°C to 150°C Operating Junction Temperature

Range

• Thermally enhanced 3-mm × 3-mm, 16-pin WQFN

package

• Pin-Compatible to TPS54418

• Create a custom design using the TPS54618 with

the WEBENCH® Power Designer

2 Applications

• Low-voltage, high-density power systems

• Point-of-load regulation for high-performance

DSPs, FPGAs, ASICs, and microprocessors

• Broadband, networking, and optical

communications infrastructure

3 Description

The TPS54618 device is a full-featured 6-V, 6-A,

synchronous step-down current-mode converter with

two integrated MOSFETs.

The TPS54618 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 WQFN package.

The TPS54618 provides accurate regulation for a

variety of loads with an 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 supply current 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 the threshold with

a resistor network on the enable pin. The outputvoltage

start-up ramp is controlled by 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 overcurrent condition.

For more SWIFT™ documentation, see the TI

website at www.ti.com/swift.