负输出反激脉宽调制器 8-SOIC -40 to 85
DESCRIPON
The UC3572 is a negative output flyback pulse width modulator which converts a positive input voltage to a regulated negative output voltage. The chip is optimized for use in a single inductor negative flyback switching converter employing an external PMOS switch. The block diagram consists of a precision reference, an error amplifier configured for voltage mode operation, an oscillator, a PWM comparator with latching logic, and a 0.5A peak gate driver. The UC3572 includes an undervoltage lockout circuit to insure sufficient input supply voltage is present before any switching activity can occur, and a pulse-by-pulse current limit.
FEATURES
• Simple Single Inductor Flyback PWM for Negative Voltage Generation
• Drives External PMOS Switch
• Contains UVLO Circuit
• Includes Pulse-by-Pulse Current Limit
• Low 50µA Sleep Mode Current
电源电压DC 4.75V min
输出接口数 1
输出电压 -1.00 V max
输出电流 500 mA
静态电流 9.00 mA
调节输出数 1
开关频率 100 kHz
过温保护 No
拓扑结构 Flyback
占空比 96 %
输入电压Max 35 V
输入电压Min 4.2 V
输出电流Max 0.5 A
最大占空比 0.92
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 4.75V ~ 30V
电源电压Max 30 V
电源电压Min 4.75 V
输入电压 4.2V ~ 35V
安装方式 Surface Mount
引脚数 8
封装 SOIC-8
高度 1.5 mm
封装 SOIC-8
工作温度 -40℃ ~ 85℃ TA
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UC2572DTR TI 德州仪器 | 当前型号 | 当前型号 |
UC2572D 德州仪器 | 类似代替 | UC2572DTR和UC2572D的区别 |
UC3572D 德州仪器 | 类似代替 | UC2572DTR和UC3572D的区别 |
UC3572DTR 德州仪器 | 类似代替 | UC2572DTR和UC3572DTR的区别 |