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3.5V to 28V Input, 3.5A, 1MHz Step-Down Converter with Eco-mode

Availability: 7,028


Package | PIN: HSOIC (DDA) | 8
Temp: S (-40 to 150)
Carrier: Partial Tube
Qty Price
1-9 $1.85
10-24 $1.65
25-99 $1.54
100-249 $1.34
250-499 $1.24
500-749 $1.04
750-999 $0.85
1,000+ $0.78


  • 3.5-V to 28-V input voltage range
  • Adjustable output voltage down to 0.8 V
  • Integrated 80-mΩ high-side MOSFET supports up to 3.5-A continuous output current
  • High efficiency at light loads with a pulse-skipping Eco-Mode™
  • Fixed 1-MHz switching frequency
  • Typical 1-µA shutdown quiescent current
  • Adjustable slow-start limits inrush currents
  • Programmable UVLO threshold
  • Overvoltage transient protection
  • Cycle-by-Cycle current limit, frequency foldback and thermal shutdown protection
  • Available in thermally enhanced 8-Pin SOIC PowerPAD™ package
  • Supported by WEBENCH™ tool (http://www.ti.com/lsds/ti/analog/webench/overview.page)

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Texas Instruments  TPS54332DDA

The TPS54332 is a 28-V, 3.5-A non-synchronous buck converter that integrates alow-RDS(on) high-side MOSFET. To increase efficiency at light loads, apulse-skipping Eco-Mode feature is automatically activated. Furthermore, the 1-µA shutdown supplycurrent allows the device to be used in battery-powered applications. Current mode control withinternal slope compensation simplifies the external compensation calculations and reduces componentcount while allowing the use of ceramic output capacitors. A resistor divider programs thehysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limitsvoltage overshoots during start-up and transient conditions. A cycle-by-cycle current limit scheme,frequency foldback and thermal shutdown protect the device and the load in the event of an overloadcondition. The TPS54332 is available in an 8-pin SOIC PowerPAD™package.