调节脉冲宽度调制器 REGULATING PULSE WIDTH MODULATORS
DESCRIPON
The UC1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip +5.1-V reference is trimmed to 1% and the input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors. A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchronized to an external system clock. A single resistor between the CT and the discharge terminals provides a wide range of dead-time adjustment. These devices also feature built-in soft-start circuitry with only an external timing capacitor required. A shutdown terminal controls both the soft-start circuitry and the output stages, providing instantaneous turn off through the PWM latch with pulsed shutdown, as well as soft-start recycle with longer shutdown commands.
1FEATURES
• 8-V to 35-V Operation
• 5.1-V Reference Trimmed to 1%
• 100-Hz to 500-kHz Oscillator Range
• Separate Oscillator Sync Terminal
• Adjustable Deadtime Control
• Internal Soft-Start
• Pulse-by-Pulse Shutdown
• Input Undervoltage Lockout With Hysteresis
• Latching PWM to Prevent Multiple Pulses
• Dual Source/Sink Output Drivers
频率 450 kHz
输出接口数 2
输入电压DC 35.0 V
输出电压 18.0 V
输出电流 400 A
耗散功率 1000 mW
调节输出数 2
上升时间 100 ns
开关频率 100Hz ~ 400kHz
拓扑结构 Buck, Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull
占空比 45 %
最大占空比 49 %
下降时间 50 ns
工作温度Max 70 ℃
工作温度Min 0 ℃
耗散功率Max 1000 mW
电源电压 8V ~ 35V
安装方式 Surface Mount
引脚数 20
封装 PLCC-20
封装 PLCC-20
工作温度 0℃ ~ 70℃ TA
产品生命周期 Active
包装方式 Tube
RoHS标准 RoHS Compliant
含铅标准 Lead Free
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UC3525AQG3 TI 德州仪器 | 当前型号 | 当前型号 |
UC3525AQTRG3 德州仪器 | 完全替代 | UC3525AQG3和UC3525AQTRG3的区别 |
UC3525AQ 德州仪器 | 类似代替 | UC3525AQG3和UC3525AQ的区别 |
UC3525AQTR 德州仪器 | 类似代替 | UC3525AQG3和UC3525AQTR的区别 |