(参照测试电路 ,0°C < TJ < 125°C, IO =500mA, VI =27V, CI=0.33ìF, CO=0.1ìF, 除非另有说明)
Parameter 参数 |
Symbol 符号 | Conditions 条件 | MC7818 LM7818 | 单位 | ||||
| 最小 |
典型 |
最大 |
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| Output Voltage 输出电压 | VO | TJ =+25℃ | 17.3 | 18 | 18.7 | V | ||
| 5.0mA ≤ IO ≤1.0A, PO ≤15W VI =21V to 33V | 17.1 | 18 | 18.9 | |||||
| Line Regulation 线性调整率 (Note1) | Regline | TJ =+25℃ | VI =21V to 33V | - | 15 | 360 | mV | |
| VI =24V to 30V | - | 5 | 180 | |||||
| Load Regulation 负载调整率 (Note1) | Regload | TJ =+25℃ | IO =5mA to 1.5A | - | 15 | 360 | mV | |
| IO =250mA to 750mA | - | 5.0 | 180 | |||||
| Quiescent Current 静态电流 | IQ | TJ =+25℃ | - | 5.2 | 8.0 | mA | ||
| Quiescent Current Change 静态电流变化 | ΔIQ | IO =5mA to 1.0A | - | - | 0.5 | mA | ||
| VI =21V to 33V | - | - | 1 | |||||
| Output Voltage Drift 输出电压漂移 | ΔVO/ΔT | IO =5mA | - | -1 | - | mV/℃ | ||
| Output Noise Voltage 输出噪声电压 | VN | f =10Hz to 100KHz, TA =+25℃ | - | 110 | - | μV/Vo | ||
| Ripple Rejection 纹波抑制 | RR | f =120Hz VI =22V to 32V | 53 | 69 | - | dB | ||
| Dropout Voltage 电压差 | VDrop | IO =1A, TJ=+25℃ | - | 2 | - | V | ||
| Output Resistance 输出电阻 | rO | f =1KHz | - | 22 | - | mΩ | ||
| Short Circuit Current 短路电流 | ISC | VI =35V, TA=+25℃ | - | 250 | - | 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 | ℃ | |
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图1 78XX内部电路图 | |||
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图8 TO-220封装图片 | |||
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图9 D-PAK封装图 |
