Electrical Characteristics 电气特性 (MC7915)
(VI = -23V, IO = 500mA, 0℃ ≤TJ ≤ +125℃, CI =2.2μF, CO =1μF, unless otherwise specified.)
Parameter 参数 Symbol 符号 Conditions 条件 最小. 典型. 最大. 单位 Output Voltage 输出电压 VO TJ=+25℃ -14.4 -15 -15.6 V IO = 5mA to 1A, PO ≤ 15W VI = -18V to -30V -14.25 -15 -15.75 Line Regulation 线性调整率(Note1) ΔVO TJ=+25℃ VI = -17.5V to -30V - 12 300 mV VI = -20V to -26V - 6 150 Load Regulation 负载调整率(Note1) (Note1) ΔVO TJ=+25℃ IO = 5mA to 1.5A - 12 300 mV TJ =+25℃ IO = 250mA to 750mA - 4 150 Quiescent Current 静态电流 IQ TJ =+25℃ - 3 6 mA Quiescent Current Change 静态电流变化 ΔIQ IO = 5mA to 1A - 0.05 0.5 mA VI = -18.5V to -30V - 0.1 1 Temperature Coefficient of VD 温度系数 ΔVo/ΔT IO = 5mA - -0.9 - mV/℃ Output Noise Voltage 输出噪声电压 VN f = 10Hz to 100KHz TA =+25℃ - 250 - μV Ripple Rejection 纹波抑制 RR f = 120Hz ΔVI = 10V 54 60 - dB Dropout Voltage 电压差 VD TJ=+25℃ IO = 1A - 2 - V Short Circuit Current 短路电流 ISC TJ =+25℃, VI = -35V - 300 - mA Peak Current 峰值电流 IPK TJ =+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 79XX内部电路图
图2 外形引脚排列图管脚图 图3 79XX参照测试电路及典型电路 |
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图4 输出电压 图5 负载调节率曲线图 |
图8 短路电流曲线图
图9 与78XX系列三端稳压构成的正负对称输出电压应用电路图
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