Secondary Side PWM Controller 450kHz to 550kHz 1Out 24Pin SOIC Tube
DESCRIPON
The UC3849 family of average current mode controllers accurately accomplishes secondary side average current mode control. The secondary side output voltage is regulated by sensing the output voltage and differentially sensing the AC switching current. The sensed output voltage drives a voltage error amplifier. The AC switching current, monitored by a current sense resistor, drives a high bandwidth, low offset current sense amplifier.
FEATURES
•Practical Secondary Side Control of Isolated Power Supplies
•1MHz Operation
•Differential AC Switching Current Sensing
•Accurate Programmable Maximum Duty Cycle
•Multiple Chips Can be Synchronized to Fastest Oscillator
•Wide Gain Bandwidth Product 70MHz, Acl>10 Current Error and Current Sense Amplifiers
•Up to Ten Devices Can Easily Share a Common Load
频率 1.00 MHz
电源电压DC 10.0V min
输出接口数 1
输入电压DC 20.0 V
输出电压 8.40 V
输出电流 250 mA
供电电流 21 mA
调节输出数 1
开关频率 450kHz ~ 550kHz
占空比 90 %
输出电流Max 0.25 A
最大占空比 85 %
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 8V ~ 20V
安装方式 Surface Mount
引脚数 24
封装 SOIC-24
高度 2.35 mm
封装 SOIC-24
工作温度 -40℃ ~ 85℃ TA
产品生命周期 Active
包装方式 Tube
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UC2849DW TI 德州仪器 | 当前型号 | 当前型号 |
UC3849DW 德州仪器 | 完全替代 | UC2849DW和UC3849DW的区别 |
UC2849N 德州仪器 | 完全替代 | UC2849DW和UC2849N的区别 |
UC3849DWTR 德州仪器 | 完全替代 | UC2849DW和UC3849DWTR的区别 |