Electrical Characteristics 电气特性 (MC7808)(LM7808)
(参照测试电路 ,0℃ < TJ < 125℃ , IO =500mA, VI =14V, CI=0.33ìF, CO=0.1ìF, 除非另有说明)
| Parameter 参数 |
Symbol 符号 |
Conditions 条件 |
MC7808 |
单位 | |||
| 最小 |
典型 |
最大 | |||||
| Output Voltage 输出电压 |
VO |
TJ =+25℃ |
7.7 |
8.0 |
8.3 |
V | |
| 5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W VI =10.5V to 23V |
7.6 |
8.0 |
8.4 | ||||
| Line Regulation 线性调整率 (Note1) |
Regline |
TJ =+25℃ |
VI =10.5V to 25V |
- |
5.0 |
160 |
mV |
| VI =11.5V to 17V |
- |
2.0 |
80 | ||||
| Load Regulation 负载调整率 (Note1) |
Regload |
TJ =+25℃ |
IO =5.0mA to 1.5A |
- |
10 |
160 |
mV |
| IO=250mA to 750mA |
- |
5.0 |
80 | ||||
| Quiescent Current 静态电流 |
IQ |
TJ =+25℃ |
- |
5.0 |
8.0 |
mA | |
| Quiescent Current Change 静态电流变化 |
ΔIQ |
IO =5mA to 1.0A |
- |
0.05 |
0.5 |
mA | |
| VI =10.5A to 25V |
- |
0.5 |
1.0 | ||||
| Output Voltage Drift 输出电压漂移 |
ΔVO/ΔT |
IO =5mA |
- |
-0.8 |
- |
mV/℃ | |
| Output Noise Voltage 输出噪声电压 |
VN |
f =10Hz to 100KHz, TA =+25℃ |
- |
52 |
- |
μV/Vo | |
| Ripple Rejection 纹波抑制 |
RR |
f =120Hz, VI=11.5V to 21.5V |
56 |
73 |
- |
dB | |
| Dropout Voltage 电压差 |
VDrop |
IO =1A, TJ=+25℃ |
- |
2 |
- |
V | |
| Output Resistance 输出电阻 |
rO |
f =1KHz |
- |
17 |
- |
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 | ℃ | |
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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 |
