三端稳压7805和7905稳压原理及典型电路
外形引脚排列图管脚图
图4 纹波抑制电路
外形引脚排列图管脚图
图4 纹波抑制电路
图5 负载调节控制电路
图6 与79XX系列三端稳压构成的正负对称输出电压电路图
图7 典型应用电路图
图8 TO-220封装图片
图9 D-PAK封装图
LM7905中文资料-MC7905-管脚图-参数-三端稳压集成电路-封装-引脚图-典型应用电路图
Electrical Characteristics 电气特性 (MC7905/LM7905)
(VI = -10V, IO = 500mA, 0℃ ≤TJ ≤ +125℃, CI =2.2μF, CO =1μF, unless otherwise specified.) Parameter 参数 Symbol 符号 TJ=+25℃ Output Voltage 输出电压 VO IO = 5mA to 1A, PO ≤ 15W VI = -7V to -20V - 4.75 -5.0 - 5.25 - 4.8 - 5.0 - 5.2 V Conditions条件 最小. 典型. 最大. Unit TJ=+25℃ VI = -7V to -20V IO = 1A - 5 50 VI = -8V to Line Regulation (Note1) 线性调整率 ΔVO -12V IO = 1A - 2 25 mV VI = -7.5Vto -25V VI = -8V to -12V IO = 1A Load Regulation 负载调整率(Note1) (Note1) Quiescent Current静态电流 Quiescent Current Change静态电流变化 ΔVO TJ =+25℃ IO = 250mA to 750mA IQ TJ =+25℃ IO = 5mA to 1A ΔIQ VI = -8V to -25V IO = 5mA f = 10Hz to 100KHz TA =+25℃ f = 120Hz ΔVI = 10V TJ=+25℃ IO = 1A TJ =+25℃, VI = -35V TJ =+25℃ TJ = +25℃ IO = 5mA to 1.5A - - - - - - - - - 54 - - - 7 7 10 3 3 0.05 0.1 - 0.4 40 60 2 300 2.2 50 50 100 mV 50 6 0.5 mA 0.8 - - - - - - mV/℃ μV dB V mA A mA Temperature Coefficient of VD温度系数 ΔVo/ΔT Output Noise Voltage 输出噪声电压 Ripple Rejection 纹波抑制 Dropout Voltage 电压差 Short Circuit Current 短路电流 Peak Current 峰值电流 三端稳压集成电路极限参数： Parameter 参数 VN RR VD ISC IPK Symbol 符号 (for VO =5V to 18V) VI VI RθJC RθJA TOPR TSTG Value 数值 35 40 5 65 0 ~ +125 -65 ~ +150 单位 V V ℃/W ℃/W ℃ ℃ Input Voltage输入电压 (for VO =24V) Thermal Resistance Junction-Cases 热阻(结到壳) (TO-220) Thermal Resistance Junction-Air热阻(结到空气) (TO-220) Operating Temperature Range工作温度范围 Storage Temperature Range储存温度范围