Electrical Characteristics 电气特性(MC78L18A LM78L18A KA78L18) (Continued)
(VI=27V,IO=40mA,0℃≤TJ≤125℃,CI=0.33μF,CO=0.1μF,unless otherwise specified除非另有说明. (Note 1)
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℃ | 17.3 | 18 | 18.7 | V | ||
| Line Regulation 线性调整率(Note1) | ΔVO | TJ = 25℃ | 21V ≤ VI ≤ 33V | - | 145 | 300 | mV | |
| 22V ≤ VI ≤ 33V | - | 135 | 250 | mV | ||||
| Load Regulation 负载调整率 (Note1) | ΔVO | TJ = 25℃ | 1mA ≤ IO≤100mA | - | 30 | 170 | mV | |
| 1mA ≤ IO ≤ 40mA | - | 15 | 85 | mV | ||||
| Output Voltage 输出电压 | VO | 21V ≤ VI ≤ 33V | 1mA ≤ IO ≤ 40mA | 17.1 | - | 18.9 | V | |
| 21V ≤ VI ≤ VMAX (Note 2) | 1mA ≤ IO ≤ 70mA | 17.1 | - | 18.9 | V | |||
| Quiescent Current 静态电流 | IQ | TJ = 25℃ | - | 2.2 | 6.0 | mA | ||
| Quiescent Current Change 静态电流变化 | With Line | ΔIQ | 21V ≤ VI ≤ 33V | - | - | 1.5 | mA | |
| With Load | ΔIQ | 1mA ≤ IO ≤ 40mA | - | - | 0.1 | mA | ||
| Output Noise Voltage 输出噪声电压 | VN | TA = 25℃, 10Hz ≤ f ≤ 100kHz | - | 150 | - | μV/Vo | ||
| Temperature Coefficient of VO温度系数 | ΔVO/ΔT | IO = 5mA | - | -1.8 | - | mV/℃ | ||
| Ripple Rejection 纹波抑制 | RR | f = 120Hz, 23V ≤ VI ≤ 33V, TJ = 25℃ | 34 | 48 | - | dB | ||
| Dropout Voltage 电压差 | VD | TJ = 25℃ | - | 1.7 | - | V | ||
Note:
1.最大稳态输出电流和输入电压依赖于散热或引线长度
以上的数据代表脉冲试验条件下结温开始测试.
2.局部放电功耗≤0.75W
极限参数：
| Parameter参数 | Symbol 符号 | Value 数值 | 单位 |
| Input Voltage (for VO = 5V, 8V) 输入电压 | VI | 30 | V |
| (for VO = 12V to 18V) | 35 | ||
| (for VO = 24V) | 40 | ||
| Operating Junction Temperature Range结温工作范围 | TJ | 0~ +150 | ℃ |
| Storage Temperature Range储存温度范围 | TSTG | -65~ +150 | ℃ |
图1 LM78LXXX内部方框图
|
图1 LM78LXXX引脚排列图
图3 LM78LXXX典型测试电路图 |
|
图4 LM78LXXX TO-92封装图片 |
|
图5 LM78LXXX 8-SOP封装图片 |
|
图6 LM78LXXX SOT-89封装图片 |
