Related Product Information

In This Issue
   Networking
Bringing switching to the desktop

   DSP Solutions
TI DSP Solutions: Your spectrum
   to success
TI unveils new R&D facility
   named in honor of IC inventor
The chip that Jack built changed
   the world
TI pegs $100M for DSP
   development
TI announces $25M college
   research fund focused on
   DSP research

   Mixed-Signal and Analog
Another step toward all-digital
High-speed, light-to-voltage
   converters
Sign on for Sine-On

   Teamwork
TI, Ariel join to develop
   DSP products
TI licenses Rambus' memory
   technology
Philips, TI team to provide first
   co-op source for PicoGate
   logic products

   App Report
Designing low-power applications
   with the TMS320LC54x

   News Briefs
Programmable dual 12-bit voltage
   output DAC
'AD50 evaluation kit
Power distribution switch
16 Mbit SDRAM
PMOS low dropout voltage
   regulator
3-V LDO regulator and voltage
   supervisor
CCD digital imaging sensor

Training

Trade Shows

PMOS low dropout voltage regulator

The TPS71025, TI's new PMOS low dropout (LDO) voltage regulator, provides reduced power consumption and longer battery life in handheld and portable battery-powered systems such as personal digital assistants (PDAs), palmtops, cellular phones and other systems using the emerging 2.5-V logic functions.

Closeup of the TPS71025

The device, the latest addition to TI's PMOS LDO family, offers an advantage over similar products. Bipolar regulators use a PNP pass element, the base current of which is directly proportional to the load current through the regulator. The TPS71025 uses a voltage-controlled pass transistor that results in low quiescent currents (typically 292 uA), which remain constant over the regulator's full specified 500mA output load. The PMOS pass transistor also acts as a low-value resistor Ñ less than one ohm -- so the dropout voltage is extremely low when compared to conventional bipolar LDOs.

Suggested resale pricing in U.S. dollars in 1K quantity.