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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftpsm82903″>View Datasheet

Texas Instruments TPSM82903 Buck Converter

Texas Instruments TPSM82903 Buck Converter features high efficiency and flexibility in a small MicroSiP package size that is easy to use. The device provides a 2.5MHz or 1.0MHz selectable switching frequency that enables the use of small components and allows a fast transient response. The TPSM82903 supports a high VOUT accuracy of ± 1% with the DCS-Control topology. The 3V to 17V wide input voltage range delivers a variety of nominal inputs, like 12V supply rails, single-cell or multi-cell Li-Ion, and 5V or 3.3V rails.

The TI TPSM82903 converter can automatically enter power save mode (if auto PFM/PWM is selected) at light loads to maintain high efficiency. Additionally, to furnish high efficiency at tiny loads, the device has a low typical quiescent current of 4µA. AEE, if enabled, supplies high efficiency across VIN, VOUT, and load current. The device includes a MODE/Smart-CONF input to set the internal/external divider, switching frequency, output voltage discharge, and automatic power save mode or forced PWM operation.

The TPSM82903 is housed in a small 11-pin MicroSiP package measuring 3.0mm x 2.8mm x 1.6mm with an integrated 1μH inductor.

Features

  • High efficiency for wide duty cycle and load range
    • IQ of 4µA typical
    • 62mΩ high-side and 22mΩ low-side RDS(ON)
  • 3mm x 2.8mm x 1.6mm MicroSiP™ package
  • Up to 3A continuous output current
  • ±0.9% feedback voltage accuracy across temp (–40°C to 125°C)
  • Configurable output voltage options:
    • VFB external divider of 0.6V to 5.5V
    • VSET internal divider with 16 options between 0.4V and 5.5V
  • DCS-Control topology with 100% mode
  • No external bootstrap capacitor required
  • Flexibility through MODE/S-CONF pin
    • 2.5MHz or 1.0MHz switching frequency
    • Forced PWM or auto (PFM) power save mode with dynamic mode change option
    • Automatic efficiency enhancement (AEE)
    • Output discharge on/off
  • Highly flexible and easy to use
    • Optimized pinout for single-layer routing
    • Precise enable input
    • Power-good output
    • Adjustable soft start and tracking
  • Create a custom design using the TPSM82903 using the WEBENCH® Power Designer

Applications

  • Data center and enterprise computing
  • Wired networking
  • Wireless infrastructure
  • Factory automation and control
  • Test and measurement
Schematic - Texas Instruments TPSM82903 Buck Converter

Block Diagram

Block Diagram - Texas Instruments TPSM82903 Buck Converter

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Texas Instruments TPSM82903 Buck Converter