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TP8305B Datasheet(PDF) 7 Page - Billiton Ltd. |
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TP8305B Datasheet(HTML) 7 Page - Billiton Ltd. |
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7 / 18 page  南京拓微集成电路有限公司 NanJing Top Power ASIC Corp. REV_1.1 7 CE 开关电压 VCE 图 6 电路，V IN=2.5V FB 接地 0.55 0.75 0.95 V 静态电流 IQ 图 6 电路，V in=CE=5.2V， VFB=0.5V 76 μA 关断电流 IQ 关断模式（CE 输入低电平） 1 uA 效率 η 方案 3 电路 90 % FB IS GND EXT VDD CE TP8305B 图 6 静态测试电路 典型特性曲线 不同模式下Iout与Vin曲线 恒流模式 恒流、限 流模式 限流模式 3.5 3 2.5 2 1.5 1 0.5 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 输入电压(V) 方案3测试 恒压输出3.6V。 L=4.7uH Rf=60mΩ RS=0 Rf=0 RS=20mΩ Rf=60mΩ RS=20mΩ |
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