UD36061中文资料0.6A, 36V, 2MHZ STEP-DOWN CONVERTER数据手册UTC规格书

描述 Description

The UTC  UD36061 is a high frequency (2MHz) step-down switching regulator with integrated internal high-side high voltage power MOSFET. It regulates input voltages from 3.3V to 36V down to an output voltage as low as 0.8V, and supplies 0.6A highly efficient output with current mode control for fast loop response. In shutdown mode the supply current drops to 3μA, it allows use in battery-powered applications. High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses. The converter uses internal N-Channel MOSFET switches to step-down the input voltage to the regulated output voltage. Sincethe high side MOSFET requires a gate voltage greater than the input voltage, a boost capacitor connected between SW and BST is needed to drive the high side gate. The boost capacitor is charged from the internal 5V rail when SW is low. Frequency fold-back helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation.

特性 Features

Wide 3.3V ~ 36V Operating Input Range500mΩ Internal Power MOSFETs230μA Operating Quiescent Current> 90% Efficiency2MHz Fixed Switching FrequencyInternally CompensatedInternal Soft-StartAdjustable Output Voltage from 0.8V to 0.8×VINPrecision Current Limit Without Current Sensing ResistorStable with Ceramic Output Capacitors3μA Low Shutdown Supply Current