Integrated shift register
    and 8-channel peripheral
    driver.
Intelligent quad high-side
    driver.
Class-D audio amplifier sets
    new standards in efficiency.
Programmable D/A allows
    for speed/power optimization.
Industry's first
    programmable resolution A/D.
High-speed 10-bit A/D with
    glueless DSP interface 90-mA
    loads
16-bit A/D D/A analog
    front-end.
UART provides quad-channel
    integration and 64-byte FIFO
Fully compliant 4-port
    USB hub.
USB power distribution
    features independant switches.
Dual low dropout regulator
    with integrated processor
    resets.
Programmable-sychronous buck
    regulator addresses advanced
    microprocessor power needs.
High performance DSP
    power controller
Low-voltage audio power amps
    designed for stero headphone
    applications.
SOT-23 50mA low-dropout
    regulator.
3-channel power supply
    supervisors.

Product features

• Dual output voltages, 3.3 V and adjustable from 1.2 to 9.75 V
• Dual active-low resets with 200 ms delay
• Output current 0 to 750 mA either output, 2-W max dissipation for total device
• Low supply current, typically 800 µA total
• ±2-percent accuracy for 3.3-V output; ±3 percent for adjustable output
• Characterized for operation from –40° C to 125° C

Texas Instruments new TPS73HD301 combines a 3.3-V and an adjustable low dropout regulator with dual processor reset outputs in a single high-power surface mount package.

Typically, new DSPs or microprocessors require two voltages — one to power the peripheral interface and one to power the core sections. The dual-output regulator eliminates three or more components from power supply designs for split-voltage DSPs or processors. Packaged in TI’s patented PowerPAD™ TSSOP package, the TPS73HD301 can supply 750mA from either output, with a 2-W power dissipation limit for the total package. The device is capable of supplying power to multiple low-power DSPs, reducing both system power consumption and board space.

The TPS73HD301 uses a PMOS low-power design that enables a dual regulator with micropower supply current requirements and very low dropout voltages. Typical dropout for the 3.3-V output is only 350 mV at the full rating of 750-mA output. Supply current for the entire device is a maximum of 1.1 mA over all specified conditions. Total accuracy for the 3.3-V output is ±2 percent; tolerance on the adjustable output is ±3 percent. Programming the adjustable regulator output is accomplished using an external resistor divider.

The TPS73HD301 is offered in a PowerPAD TSSOP surface-mount package.

• TPS73HD301QPW