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 | Conditions条件 | 最小. | 典型. | 最大. | Unit | |
| Output Voltage 输出电压 | VO | TJ=+25℃ | - 4.8 | - 5.0 | - 5.2 | V | |
| IO = 5mA to 1A, PO ≤ 15W VI = -7V to -20V | - 4.75 | -5.0 | - 5.25 | ||||
| Line Regulation (Note1) 线性调整率 | ΔVO |
TJ=+25℃ |
VI = -7V to -20V IO = 1A |
- | 5 | 50 | mV |
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VI = -8V to -12V IO = 1A |
- | 2 | 25 | ||||
| VI = -7.5Vto -25V | - | 7 | 50 | ||||
| VI = -8V to -12V IO = 1A | - | 7 | 50 | ||||
| Load Regulation 负载调整率(Note1) (Note1) | ΔVO | TJ = +25℃ IO = 5mA to 1.5A | - | 10 | 100 | mV | |
| TJ =+25℃ IO = 250mA to 750mA | - | 3 | 50 | ||||
| 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 = -8V to -25V | - | 0.1 | 0.8 | ||||
| Temperature Coefficient of VD温度系数 | ΔVo/ΔT | IO = 5mA | - | - 0.4 | - | mV/℃ | |
| Output Noise Voltage 输出噪声电压 | VN | f = 10Hz to 100KHz TA =+25℃ | - | 40 | - | 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 数值 | 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
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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 |
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图6 电压差曲线图 图7 静态电流曲线图
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
图10 TO-220封装图片 |
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