lm7824中文资料

Electrical Characteristics 电气特性 (MC7824)LM7824
(参照测试电路 ,0°C < TJ < 125°C, IO =500mA, VI =33V, CI=0.33ìF, CO=0.1ìF, 除非另有说明)

Parameter 参数	Symbol 符号	Conditions 条件		MC7824 LM7824			单位
				最小	典型	最大
Output Voltage 输出电压	VO	TJ =+25℃		23	24	25	V
		5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W VI =27V to 38V		22.8	24	25.25
Line Regulation 线性调整率 (Note1)	Regline	TJ =+25℃	VI =27V to 38V	-	17	480	mV
			VI =30V to 36V	-	6	240
Load Regulation 负载调整率 (Note1)	Regload	TJ =+25℃	IO =5mA to 1.5A	-	15	480	mV
			IO =250mA to 750mA	-	5.0	240
Quiescent Current 静态电流	IQ	TJ =+25℃		-	5.2	8.0	mA
Quiescent Current Change 静态电流变化	ΔIQ	IO =5mA to 1.0A		-	0.1	0.5	mA
		VI =27V to 38V		-	0.5	1
Output Voltage Drift 输出电压漂移	ΔVO/ΔT	IO =5mA		-	-1.5	-	mV/℃
Output Noise Voltage 输出噪声电压	VN	f =10Hz to 100KHz, TA =+25℃		-	60	-	μV/Vo
Ripple Rejection 纹波抑制	RR	f =120Hz VI =28V to 38V		50	67	-	dB
Dropout Voltage 电压差	VDrop	IO =1A, TJ=+25℃		-	2	-	V
Output Resistance 输出电阻	rO	f =1KHz		-	28	-	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

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