TPSM82903 Synchronous Buck Converter Module

Texas Instruments' TPSM82903 is a highly efficient, small, and flexible synchronous step-down DC/DC converter module that is easy to use. The selectable switching frequency of 2.5 MHz or 1.0 MHz allows the use of small components and provides a fast transient response. The module supports a high V_OUT accuracy of ±1% with DCS-Control™ topology. The wide input voltage range of 3 V to 17 V supports a variety of nominal inputs such as 12 V supply rails, single-cell or multi-cell Li-Ion, and 5 V or 3.3 V rails. The TPSM82903 can automatically enter power-save mode at light loads to maintain high efficiency when PFM (auto)/PWM is selected.

The TPSM82903 has a low typical quiescent current (I_Q) of 4 µA, providing high efficiency at very small loads. When enabled, the automatic efficiency enhancement (AEE) can provide high efficiency across the V_IN, V_OUT, 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 module is available in a small 11-pin MicroSiP package measuring 3.0 mm x 2.8 mm x 1.6 mm with an integrated 1 μH inductor.