The TPS629210E is high-efficiency and highly flexible synchronous step-down buck converter in a small 1.6-mm × 2.1-mm SOT583 package with –55°C to 150°C extended operating temperature performance. The TPS629210E can be configured to run 2.5 MHz or 1 MHz in either forced PWM mode or auto PFM/PWM mode. In 2.5-MHz auto PFM/PWM mode, TI AEE mode automatically adjusts the switching frequency based on both input and output voltage to hold a high efficiency through the whole operation range without the need of using different inductors. The device includes a Mode/S-CONF input to select different combinations of following:

• External/internal feedback
• Max switching frequency
• Output discharge enable/disable
• Auto PFM/PWM(with AEE) and forced PWM operations

The TPS629210EEVM(BSR131-008) uses 1-A TPS629210E converter to produce 3.3-V output from a 12-V input.