LT3574集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

LT3574属于集成电路（IC）的稳压器-DC-DC开关稳压器。由亚德诺半导体技术有限公司制造生产的LT3574稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。

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