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TI Buck-Boost DC/DC Converter Widens Input Voltage Range for Automotive

New Device Fully Integrates Power Switches to Stabilize Output Voltage and Simplify Power Design

Apr 11, 2007

DALLAS (April 11, 2007) -- Texas Instruments Incorporated (TI) (NYSE: TXN) introduced today an automotive-qualified DC/DC power management integrated circuit (IC) that switches autonomously between buck and boost modes to provide a constant regulated output voltage of 5 V. The TPIC74100-Q1 operates over a wide input voltage range of 1.5 V to 40 V and simplifies design by eliminating the need for external components. The device also minimizes electro-magnetic interference (EMI) in the system by implementing a clock modulator and adjustable slew rate. See www.ti.com/sc07073.

Additional key features include the following: 

  • Switch-mode regulator - 5 V +/- 2%, normal mode - 5 V +/- 3%, low-power or crossover mode 
  • Switching frequency of 440 kHz (typical) is outside of the AM frequency band 
  • Input Operating Range, 1.5 V to 40 V, (Vdriver) - 1-A Load-Current Capability - 200-mA Load-Current Capability Down to 2 V Input (Vdriver) - 120-mA Load-Current Capability Down to 1.5 V Input (Vdriver) 
  • Disable and low-power operation modes to optimize power savings 
  • Reset function with deglitch timer and programmable delay provides increased reliability in the system 
  • Programmable alarm function for undervoltage detection and indication 
  • Thermally-enhanced package for efficient heat management

Pricing and Availability

The TPIC74100-Q1 voltage regulators are available today in volume from TI and its authorized distributors in a 20-pin HTSSOP PowerPADTM package. Suggested resale pricing in quantities of 1,000 units is $1.70.

TI is committed to the automotive market, providing OEMs and system suppliers with a broad digital and analog portfolio of superior-quality, reliable, innovative and cost-effective solutions. TI products address electronics in the car for systems ranging from power train to braking to audio and infotainment. The company has achieved ISO/TS16949:2002 certification at 36 facilities worldwide. For more information on TI's automotive products, please see