2.95-V to 6-V Input, 3-A Output, 2-MHz, Synchronous Step-Down
Switcher With Integrated FETs ( SWIFT™)
Qualified for Automotive Applications
Two 12-mΩ (typical) MOSFETs for High
Efficiency at 3-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/Sequencing
UV and OV Power Good Output
–40°C to 150°C Operating Junction
Thermally Enhanced 3mm × 3mm 16-pin QFN
Pin Compatible to TPS54418
Low-Voltage, High-Density Power Systems
Point of Load Regulation for High Performance
DSPs, FPGAs, ASICs and Microprocessors
Broadband, Networking and Optical
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SWIFT, SwitcherPro, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Check for Samples:
The TPS54388-Q1 device is a full featured 6 V, 3 A,
synchronous step down current mode converter with
two integrated MOSFETs.
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 x 3 mm thermally enhanced QFN
The TPS54388-Q1 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.
Under voltage lockout is internally set at 2.45 V, but
can be increased by programming the threshold with
a resistor network on the enable pin. The output
voltage startup 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 fold back and thermal shutdown protects
the device during an over-current condition.
The TPS54388-Q1 is supported in the SwitcherPro™
Software Tool at www.ti.com/switcherpro.
For more SWIFT
website at www.ti.com/swift.
SLVSAF1A – OCTOBER 2010 – REVISED JUNE 2011
documentation, see the TI
f = 500kHz
Vout = 1.8V
I - Output Current - A
Copyright © 2010–2011, Texas Instruments Incorporated