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LM7824A中文资料来源于瑞达科技网
作者：佚名  文章来源：网络  点击数  更新时间：2011/1/13   文章录入：瑞达  责任编辑：瑞达科技

Electrical Characteristics 电气特性 (MC7824A/LM7824A)

(Refer to test circuit参照测试电路 ,0°C < TJ < 125°C, IO = 500mA, VI = 10V, CI= 0.33ìF, CO= 0.1ìF, 除非另有说明)


Parameter 参数 Symbol 符号 Conditions 条件 最小 典型 最大 单位 Output Voltage 输出电压 VOTJ =+25℃ 23.5 24 24.5 VIO =5mA to 1A, PO ≤15W VI =27.3V to 38V 23 24 25 Line Regulation 线性调整率 (Note1) ReglineVI=27V to 38V IO =500mA -18 240 mVVI=21V to 33V -6 240TJ =+25℃VI=26.7V to 38V -18 240 VI=30V to 36V -6 120 Load Regulation 负载调整率 (Note1) RegloadTJ =+25℃ IO =5mA to 1.5A -15 100 mVIO =5mA to 1.0A -15 100IO =250mA to 750mA -7 50 Quiescent Current 静态电流 IQTJ =+25℃ -5.2 6.0 mA Quiescent Current Change 静态电流变化 ΔIQVI =27.3V to 38V, TJ =+25℃ --0.8 mAVI =27.3V to 38V, IO =500mA --0.8IO =5mA to 1.0A --0.5 Output Voltage Drift 输出电压漂移 ΔV/ΔT IO =5mA --1.5 -mV/℃ Output Noise Voltage 输出噪声电压 VNf =10Hz to 100KHz TA =25℃ -10 -μV/Vo Ripple Rejection 纹波抑制 RRf =120Hz, IO =500mA VI =28V to 38V -54 -dB Dropout Voltage 电压差 VDropIO =1A, TJ =+25℃ -2.0 -V Output Resistance 输出电阻 rOf =1KHz -20 -mΩ Short Circuit Current 短路电流 ISCVI=35V, TA =+25℃ -250 -mA Peak Current 峰值电流 IPKTJ=+25℃ -2.2 -A

三端稳压集成电路极限参数： Parameter 参数 Symbol 符号 Value 单位 Input Voltage输入电压 (for VO =5V to 18V)VI 35 V (for VO =24V)VI 40 V Thermal Resistance Junction-Cases  热阻(结到壳) (TO-220) RθJC 5 ℃/W Thermal Resistance Junction-Air热阻(结到空气) (TO-220) RθJA 65 ℃/W Operating Temperature Range工作温度范围 TOPR 0 ~ +125 ℃ Storage Temperature Range储存温度范围 TSTG -65 ~ +150 ℃

 

                             图1 78XX内部电路图

                   图2 78XX参照测试电路                     图3  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
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