LT3574集成電路（IC）的穩(wěn)壓器-DC-DC開關穩(wěn)壓器規(guī)格書PDF中文資料

LT3574屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關穩(wěn)壓器。由亞德諾半導體技術有限公司制造生產的LT3574穩(wěn)壓器 - DC-DC 開關穩(wěn)壓器DC-DC 開關穩(wěn)壓器 PMIC（電源管理集成電路）產品族中的產品是元器件級設備，用于需要穩(wěn)定 DC 輸入電壓和/或將其轉換為不同幅度的輸出電壓的應用。這些器件與稱為“控制器”PMIC 的類似產品的區(qū)別在于集成了主開關元件，設備提供的電力會通過該元件。

DESCRIPTION

The LT?8302/LT8302-3 is a monolithic micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with two external resistors and a third optional temperature compensation resistor. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 3.6A, 65V DMOS power switch is integrated along with all the high voltage circuitry and control logic into a thermally enhanced 8-lead SO package.

FEATURES

■ 3V to 42V Input Voltage Range

■ 3.6A, 65V Internal DMOS Power Switch

■ Low Quiescent Current:

■ 106μA in Sleep Mode

■ 380μA in Active Mode

■ Quasi-Resonant Boundary Mode Operation at Heavy Load

■ Low Ripple Burst Mode? Operation at Light Load

■ Minimum Load < 0.5 (Typ) of Full Output

■ No Transformer Third Winding or Opto-Isolator Required for Output Voltage Regulation

■ Accurate EN/UVLO Threshold and Hysteresis

■ Internal Compensation and Soft-Start

■ Temperature Compensation for Output Diode

■ Output Short-Circuit Protection

■ Thermally Enhanced 8-Lead SO Package

■ AEC-Q100 Qualified for Automotive Applications

APPLICATIONS

■ Isolated Automotive, Industrial, Medical Power Supplies

■ Isolated Auxiliary/Housekeeping Power Supplies