(参照测试电路 ,0°C < TJ < 125°C, IO =500mA, VI =19V, CI=0.33iF, CO=0.1iF, 除非另有说明)
Parameter 参数 | Symbol 符号 | Conditions 条件 | MC7812 LM7812 | 单位 | |||||
| 最小 | 典型 | 最大 | |||||||
| Output Voltage 输出电压 | VO | TJ =+25℃ | 11.5 | 12 | 12.5 | V | |||
| 5.0mA ≤ IO≤1.0A, PO≤15W VI =14.5V to 27V | 11.4 | 12 | 12.6 | ||||||
| Line Regulation 线性调整率 (Note1) | Regline | TJ =+25℃ | VI =14.5V to 30V | - | 10 | 240 | mV | ||
| VI =16V to 22V | - | 3.0 | 120 | ||||||
| Load Regulation 负载调整率 (Note1) | Regload | TJ =+25℃ | IO =5mA to 1.5A | - | 11 | 240 | mV | ||
| IO =250mA to 750mA | - | 5.0 | 120 | ||||||
| Quiescent Current 静态电流 | IQ | TJ =+25℃ | - | 5.1 | 8.0 | mA | |||
| Quiescent Current Change 静态电流变化 | ΔIQ | IO =5mA to 1.0A | - | 0.1 | 0.5 | mA | |||
| VI =14.5V to 30V | - | 0.5 | 1.0 | ||||||
| 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℃ | - | 76 | - | μV/Vo | |||
| Ripple Rejection 纹波抑制 | RR | f =120Hz VI =15V to 25V | 55 | 71 | - | dB | |||
| Dropout Voltage 电压差 | VDrop | IO =1A, TJ=+25℃ | - | 2 | - | V | |||
| Output Resistance 输出电阻 | rO | f =1KHz | - | 18 | - | mΩ | |||
| Short Circuit Current 短路电流 | ISC | VI =35V, TA=+25℃ | - | 230 | - | 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 78XX内部电路图 | |||
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图9 D-PAK封装图 |
