LM7812A中文资料-MC7812A-管脚图-参数-三端稳压集成电路-封装-引脚图-典型应用电路图-PDF

Electrical Characteristics 电气特性 (MC7812A/LM7812A)

(Refer to test circuit参照测试电路 ,0°C < TJ < 125°C, IO = 500mA, VI = 10V, CI= 0.33ìF, CO= 0.1ìF, 除非另有说明)

Electrical Characteristics (MC7812A)
(Refer to the test circuits. 0℃ < TJ < 125℃, Io =1A, V I =19V, C I=0.33ìF, C O=0.1ìF, unless otherwise specified)

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℃		11.75	12	12.25	V
		IO =5mA to 1A, PO ≤15W VI =14.8V to 27V		11.5	12	12.5
Line Regulation 线性调整率 (Note1)	Regline	VI=14.8V to 30V IO =500mA		-	10	10	mV
		VI=16V to 22V		-	4	120
		TJ =+25℃	VI=14.5V to 27V	-	10	120		mV
			VI=16V to 22V	-	3	60
Load Regulation 负载调整率 (Note1)	Regload	TJ =+25℃ IO =5mA to 1.5A		-	12	100	mV
		IO =5mA to 1.0A		-	12	100
		IO =250mA to 750mA		-	5	50
Quiescent Current 静态电流	IQ	TJ =+25℃		-	5.1	6.0	mA
Quiescent Current Change 静态电流变化	ΔIQ	VI =15V to 30V, TJ=+25℃		-		0.8	mA
		VI =14V to 27V, IO =500mA		-		0.8
		IO =5mA to 1.0A		-		0.5
Output Voltage Drift 输出电压漂移	ΔV/ΔT	IO =5mA		-	-1.0	-	mV/℃
Output Noise Voltage 输出噪声电压	VN	f =10Hz to 100KHz TA =+25℃		-	10	-	μV/Vo
Ripple Rejection 纹波抑制	RR	f =120Hz, IO =500mA VI =14V to 24V		-	60	-	dB
Dropout Voltage 电压差	VDrop	IO =1A, TJ =+25℃		-	2.0	-	V
Output Resistance 输出电阻	rO	f =1KHz		-	18	-	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
Input Voltage输入电压	(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

图2 78XX参照测试电路图3 外形引脚排列图管脚图

图4 纹波抑制电路

图5 负载调节控制电路

图6 与79XX系列三端稳压构成的正负对称输出电压电路图

图7 典型应用电路图

图8 TO-220封装图片

图9 D-PAK封装图