lm7812

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℃

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

Parameter 参数

Symbol 符号

Value

单位

Input Voltage输入电压

VI (for VO =5V to 18V)

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

℃