TI Unveils Capacitor-Free LDO Family with One Percent Accuracy

TI Unveils Capacitor-Free LDO Family with One Percent Accuracy

June 20, 2006

1.5-A and 3-A Linear Regulators Simplify Power Design While Providing High Performance

    DALLAS, June 20 /Xinhua-PRNewswire/ -- Texas
Instruments Incorporated (TI) (NYSE: TXN) today introduced
a series of 1.5-A and 3-A low-dropout linear regulators
(LDOs) that feature a one percent voltage regulation
accuracy rate over line, load and temperature.  The
easy-to-use LDOs meet the sequencing requirements for
high-current applications such as telecom, notebooks and
servers that use FPGAs and TI's digital signal processors
(DSPs).  See: http://www.ti.com/sc06111 . 

    TI's new TPS74xxx LDOs are stable with any or no output
capacitor and support input voltages as low as 0.9 V.  The
external bias permits low input voltage operation with
excellent transient response while providing a high power
supply rejection ratio (PSRR).  The track input allows
user-programmed sequencing to minimize the voltage
difference among supply rails during startup.  The enable
input (EN) and power-good (PG) outputs allow easy
sequential sequencing with external regulators.   

    The TPS74xxx family can yield dropout voltages as low
as 115 mV at 3 A over the entire input voltage range.  They
also offer an adjustable output range of 0.8 V to 3.3 V.   

    Key Features of the TPS74xxx family:

    -- 1.5-A and 3-A LDO Regulators with Programmable
Soft-Start (SS) and 
       Tracking (TR)
    -- Supports Input Voltages as Low as 0.9 V 
    -- Adjustable Output (0.8 V to 3.3 V) 
    -- Ultra-Low Dropout: 55 mV at 1.5 A (TPS74201); 55 mV
at 1.5 A 
       (TPS74301); 115 mV at 3 A (TPS74401)
    -- One Percent Accuracy Over Line, Load and Temperature

    -- Stable with Any or No Output Capacitor 
    -- Active High Enable and Open-Drain Power-Good   
    -- External BIAS Permits Low Vin Operation with
Excellent Transient 
       Response

    Pricing and Availability

    The TPS74xxx family of LDOs is available today in
volume from TI and its authorized distributors.  The
devices are offered in a small 5 mm x 5 mm QFN package.
Suggested retail pricing in 1,000-piece quantities is $2.25
for the TPS74201 and TPS74301 and $2.95 for the TPS74401
device.  For applications that require additional power
dissipation, the DDPAK package is available.  Evaluation
modules of the TPS74xxx, design application notes and TI's
easy-to-use online power management selection tool are
available through power.ti.com.

    Leading Portfolio of Power Management Products  

    TI is focused on meeting the power design needs of
customers through innovative products and technical
support.  TI leverages its analog and digital system
expertise and manufacturing capabilities to provide
high-performance, discrete and integrated power management
solutions to fit any portable or line-powered power design
challenge -- from cell phones and PDAs to telecom,
industrial and computing applications. 

    About Texas Instruments

    Texas Instruments Incorporated provides innovative DSP
and analog technologies to meet our customers' real world
signal processing requirements.  In addition to
Semiconductor, the company includes the Educational &
Productivity Solutions business.  TI is headquartered in
Dallas, Texas, and has manufacturing, design or sales
operations in more than 25 countries.

    Texas Instruments is traded on the New York Stock
Exchange under the symbol TXN.  More information is located
on the World Wide Web at http://www.ti.com .

    Please refer all reader inquiries to:

     Texas Instruments Incorporated
     Semiconductor Group, SC-06111
     Literature Response Center
     14950 FAA Blvd.
     Fort Worth, TX  76155
     1-800-477-8924

    Trademarks

    All registered trademarks and other trademarks belong
to their respective owners.

    For more information, please contact:

     Matt McKinney
     Texas Instruments
     Tel:   [phone]
     Email: [e-mail]

     Jacqi Moore
     GolinHarris
     Tel:   [phone]
     Email: [e-mail]

SOURCE  Texas Instruments Incorporated