FAN7601BMX

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This literature is subject to all applicable copyright laws and is not for resale in any manner. FAN7601B 绿色电流模式 PWM 控制器 特性 说明          FAN7601B 是一款可编程频率绿色电流模式 PWM 控制 绿色电流模式 PWM 控制 低工作电流：最大值 4 mA 间歇模式运行 内部高压启动开关 欠压锁定 (UVLO) 12 V / 8 V 闩锁保护和软启动功能 过压保护：19 V 工作频率高达 300 kHz 器。它特别为需要在轻负载和空载条件下具有高效率的离 线适配器应用和辅助电源而设计。内部高压启动开关和间 歇模式减少了功率损耗。 FAN7601B 包含保护功能，例如闩锁保护和过压保护。闩 锁保护可用于过压保护、热保护及其他功能。软启动防止 启动时的输出电压过冲。 最大占空比：95% 应用   离线适配器应用 辅助电源 相关资源  AN4129—绿色电流模式 PWM 控制器 FAN7601 订购信息 器件编号 工作结温 顶标 封装 包装方法 FAN7601BMX -40C 至 +150C 7601B 8-SOP 卷带和卷盘 © 2008 飞兆半导体公司 FAN7601B • Rev. 1.0.4 www.fairchildsemi.com FAN7601B—绿色电流模式 PWM 控制器 2013 年 12 月 FAN7601B—绿色电流模式 PWM 控制器 框图              图 1. 内部框图 引脚配置 图 2. 引脚分配（顶视图/俯视图） 引脚定义 引脚编号 (8 引脚) 名称 1 VSTR 说明 启动 2 CS/FB 3 闩锁/软启动 4 Rt/Ct 振荡器定时 5 GND 接地 6 输出 栅极驱动输出 电流检测与反馈 闩锁保护和软启动功能 7 VCC IC 电源 8 VREF 参考电压 © 2008 飞兆半导体公司 FAN7601B • Rev.1.0.4 www.fairchildsemi.com 2 应力超过绝对最大额定值，可能会损坏器件。在超出推荐的工作条件的情况下，该器件可能无法正常工作，所以不建议 让器件在这些条件下长期工作。此外，长期在高于推荐的工作条件下工作，会影响器件的可靠性。绝对最大额定值仅是 应力规格值。 符号 VCC VCS/FB 参数 最小值 电源电压 最大值 单位 20 V 输入电压 CS/FB -0.3 20.0 V 存储温度 -55 +150 C TJ 建议工作结温 -40 +150 C IO 输出电流 250 mA VSTR VSTR 输出电压 500 V ESD 静电放电能力 TSTG 人体放电模型，JESD22-A114 2000 元件充电模型，JESD22-C101 1500 V 热阻测试 符号 JA 参数 结至环境热阻 © 2008 飞兆半导体公司 FAN7601B • Rev.1.0.4 数值 单位 180 °C/W www.fairchildsemi.com 3 FAN7601B—绿色电流模式 PWM 控制器 绝对最大额定值 除非另有说明，TA=-25C~125C, VCC=14 V, RT=9.5 k, CT=2.2 nF。 符号 参数 工作条件 最小值 典型值 最大值 单位 基准部分 参考输出电压 IO=1 mA VREF1 线路调节 VREF2 负载调节 VREF 4.85 5.00 5.15 V VCC=10 V~18 V 10 20 mV IO=1 mA ~ 10 mA 20 30 mV 100 110 kHz 1.5 % 振荡器部分 90 fOSC 初始精确度 STV 稳压 VCC=10 V~18 V 1.0 VOSC 振幅 Vpin4 峰-峰 1.25 V PWM 部分 VCS/FB1 CS/FB 阈值电压 1 DMAX 最大占空比 DMIN 最小占空比 TA=25°C 0.9 1.0 1.1 V 92 95 98 % 0 % 间歇模式部分 VCS/FB2 VCS/FB3 (1) 0.77 0.97 1.17 V (1) 0.7 0.9 1.1 V 9 12 15 A 1.2 1.5 1.8 V CS/FB 阈值电压 2 CS/FB 阈值电压 3 软启动部分 ISS VSL 软启动电流 软启动限压 (2) Vpin3=GND ISS=1 A 保护部分 VLATCH 闩锁电压 2.25 2.50 2.75 V VOVP 过压保护 18 19 20 V VtH 启动阈值电压 11 12 13 V VtL 最大工作电压 7 8 9 V 3 4 mA 2.0 2.5 V 12.0 14.0 V UVLO 部分 总电流部分 IOP 工作电源电流 输出部分 VOL 低输出电压 TA=25C, IO=100 mA VOH 高输出电压 TA=25C, IO=-100 mA tr tf 11.5 (1) TA=25C, CI=1 nF 45 150 ns 下降时间 (1) TA=25C, CI=1 nF 35 150 ns VSTR 启动电流 VSTR=30V, TA=25°C 1.0 1.5 mA 上升时间 启动部分 Istr 0.5 注意： 1. 该参数由设计保证；未经 100% 产品测试。 2. 建议在 闩锁/软启动引脚和地之间连接一个 1 M 电阻器，用于防止闩锁保护功能因噪声耦合而异常运行。 © 2008 飞兆半导体公司 FAN7601B • Rev.1.0.4 www.fairchildsemi.com 4 FAN7601B—绿色电流模式 PWM 控制器 电气特性 3 5.03 2.5 Supply Cur r ent I cc (mA) Vref (V) 5.05 5.01 2 1.5 4.99 4.97 1 0.5 0 4.95 -45 -25 -15 0 25 50 -45 -25 -15 80 100 125 140 Junction Temperature(℃) 图 3. 削波参考电压 Vcc Stop Thr eshold VtL (V) Vcc Star t Thr eshold VtH (V) 50 80 100 125 140 电源电流 9 12.5 12 11.5 11 10.5 10 -45 -25 -15 0 25 50 8.5 8 7.5 7 -45 -25 -15 80 100 125 140 VCC 启动阈值电压 图 5. 0 25 50 80 100 125 140 Junction Temperature(℃) Junction Temperature(℃) VCC 停止阈值电压 图 6. 110 100 Maximum Duty Cycle Dmax (%) Oscillator Frequency Fosc (KHz) 25 图 4. 13 105 100 95 90 85 -45 -25 -15 0 25 50 80 图 7. 98 96 94 92 90 -45 -25 -15 100 125 140 0 25 50 80 100 125 140 Junction Temperature(℃) Junction Temperature(℃) 振荡器频率 图 8. 最大占空比 1.35 O scillator L ow Thr eshold Vr L (V) 2.7 O scillator High Thr eshold Vr H (V) 0 Junction Temperature(℃) 2.6 2.5 2.4 2.3 -45 -25 -15 0 25 50 80 © 2008 飞兆半导体公司 FAN7601B • Rev.1.0.4 1.25 1.2 1.15 -45 -25 -15 100 125 140 0 25 50 80 100 125 140 Junction Temperature(℃) Junction Temperature(℃) 图 9. 1.3 振荡器高阈值电压 图 10. 振荡器低阈值电压 www.fairchildsemi.com 5 FAN7601B—绿色电流模式 PWM 控制器 典型性能特征 20 Over Voltage Protection Vovp (V) Star t up Cur r ent Istr (mA) 2 1.6 1.2 0.8 0.4 0 -45 -25 -15 0 25 50 80 100 125 140 Junction Temperature(℃) 19.6 19.2 18.8 18.4 18 -45 -25 -15 0 25 50 80 100 125 140 Junction Temperature(℃) 图 11. 启动电流 图 12. 过压保护电平 14 2.7 Soft Start Curren t Isof (uA) Latch Protection Vlatch (V) 2.8 2.6 2.5 2.4 2.3 13 12 11 10 9 2.2 -45 -25 -15 0 25 50 80 100 125 140 Junction Temperature(℃) -45 -25 -15 0 25 50 80 100 125 140 Junction Temperature(℃) 图 13. 闩锁保护电压 图 14. 软启动电流 1000 Ct= Frequen cy[ KHz] 10nF 8.2nF 100 4.7nF 3.3nF 2.2nF 1nF 820pF 10 680pF 1 5K 15K 25K Rt[Kohm] 35K 45K 图 15. 振荡器频率特性 © 2008 飞兆半导体公司 FAN7601B • Rev.1.0.4 www.fairchildsemi.com 6 FAN7601B—绿色电流模式 PWM 控制器 典型性能特征（接上页） ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. 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