描述 Description

The high efficiency TPSM82843x step-down converter family supports an ultra-low typical operating quiescent current of 275nA and a typical shutdown current of only 4nA. The inductor is integrated into the QFN package improving ease of use and reducing the bill of material down to only three passive components.

The RF-friendly device uses DCS-Control for a low output voltage ripple. The device is designed to power wireless applications like Wi-Fi or Bluetooth. The device switches at 1.5MHz and has high efficiency even at light load current down to 10μA for long battery life and easy thermal management. Humidity, temperature or vibration have no influence on the output voltage accuracy due to the integrated feedback divider. Therefore, the device is also an excellent choice for industrial point of load applications.

18 pre-defined output voltages per part number with 1% accuracy selected through a 1% resistor on the VSET pin support a large variety of applications.

特性 Features

? 1.8V to 5.5V input voltage range
? 0.4V to 3.6V output voltage range
? 600mA output current
? Output discharge
? 275nA typical quiescent current, 4nA shutdown
? Zero losses from eliminating output divider
? 1% accurate voltage selection with single resistor on VSET-pin
? TPSM828436: 0.4V to 0.8V
? TPSM828437: 0.8V to 1.8V
? TPSM828438: 1.8V to 3.6V

? Cost and size optimized passive components
? Down to 4.7μF CIN and COUT
? 0402 and 0201 capacitors supported

? Low output voltage ripple in power save mode
? RF-friendly and fast transient DCS-Control
? Automatic transition to no ripple 100% mode
? Small QFN package with 2.45mm × 2.70mm × 1.27mm