Power Management

7812

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THREE TERMINAL POSITIVE VOLTAGE REGULATORS

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KIA7805AP KEC

Document overview

PDF pages: 20

Technical content

Page 1

SEMICONDUCTOR

TECHNICAL DATA

BIPOLAR LINEAR INTEGRATED CIRCUIT

THREE TERMINAL POSITIVE VOLTAGE REGULATORS 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V, 20V, 24V.

FEATURES

Internal Thermal Overload Protection. Internal Short Circuit Current Limiting. Output Current up to 1.5A. Satisfies IEC-65 Specification. (International Electronical Commission). Package is TO-220AB

LINE-UP

ITEM	OUTPUT VOLTAGE (Typ.)	UNIT
KIA7805AP	5	V
KIA7806AP	6
KIA7807AP	7
KIA7808AP	8
KIA7809AP	9
KIA7810AP	10
KIA7812AP	12
KIA7815AP	15
KIA7818AP	18
KIA7820AP	20
KIA7824AP	24

MAXIMUM RATINGS (Ta=25 )

CHARACTERISTIC		SYMBOL	RATING	UNIT
Input Voltage	KIA7805 KIA7815	VIN	35	V
Input Voltage	KIA7818 KIA7824	VIN	40	V
Power Dissipation-1 (No Heatsink)	AP	PD2	1.9	W
Power Dissipation-2 (Infinite Heatsink)	AP	PD2	30	W
Operating Junction Temperature		Tj	-40 150
Storage Temperature		Tstg	-55 150
Maximum Junction Tamperature		Tj(max)	150

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Page 2

EQUIVALENT CIRCUIT

OUTPUT

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Page 3

KIA7805AP

ELECTRICAL CHARACTERISTICS (VIN=10V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		4.8	5.0	5.2	V
Input Regulation	Reg line	Fig. 1	Tj=25	7.0V VIN 25V	-	3	100	mV
Input Regulation	Reg line	Fig. 1	Tj=25	8.0V VIN 12V	-	1	50	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	15	100	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	5	50	mV
Output Voltage	VOUT	Fig. 1	7.0V VIN 20V		4.75	-	5.25	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.2	8.0	mA
Quiescent Current Change	IB	Fig. 1	7.0V VIN 25V		-	-	1.3	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	50	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 8.0V VIN 18V,		62	78	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	1.6	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-0.6	-	mV/

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Page 4

KIA7806AP

ELECTRICAL CHARACTERISTICS (VIN=11V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		5.75	6.0	6.25	V
Input Regulation	Reg line	Fig. 1	Tj=25	8.0V VIN 25V	-	4	120	mV
Input Regulation	Reg line	Fig. 1	Tj=25	9V VIN 13V	-	2	60	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	15	120	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	5	60	mV
Output Voltage	VOUT	Fig. 1	8V VIN 21V		5.7	-	6.3	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.3	8.0	mA
Quiescent Current Change	IB	Fig. 1	8V VIN 25V		-	-	1.3	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	55	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 9V VIN 19V,		61	77	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	1.5	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-0.7	-	mV/

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Page 5

KIA7807AP

ELECTRICAL CHARACTERISTICS (VIN=12V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		6.72	7.0	7.28	V
Input Regulation	Reg line	Fig. 1	Tj=25	9V VIN 25V	-	5	140	mV
Input Regulation	Reg line	Fig. 1	Tj=25	10V VIN 14V	-	2	70	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	15	140	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	5	70	mV
Output Voltage	VOUT	Fig. 1	9V VIN 22V		6.65	-	7.35	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.3	8.0	mA
Quiescent Current Change	IB	Fig. 1	9V VIN 25V		-	-	1.3	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	60	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 10V VIN 20V,		59	75	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	1.3	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-0.8	-	mV/

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Page 6

KIA7808AP

ELECTRICAL CHARACTERISTICS (VIN=14V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		7.7	8.0	8.3	V
Input Regulation	Reg line	Fig. 1	Tj=25	10.5V VIN 25V	-	6	160	mV
Input Regulation	Reg line	Fig. 1	Tj=25	11V VIN 17V	-	2	80	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	12	160	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	4	80	mV
Output Voltage	VOUT	Fig. 1	10.5V VIN 23V		7.6	-	8.4	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.3	8.0	mA
Quiescent Current Change	IB	Fig. 1	10.5V VIN 25V		-	-	1.0	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	70	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 11.5V VIN 21.5V,		58	74	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	1.1	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-1.0	-	mV/

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Page 7

KIA7809AP

ELECTRICAL CHARACTERISTICS (VIN=15V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		8.64	9.0	9.36	V
Input Regulation	Reg line	Fig. 1	Tj=25	11.5V VIN 26V	-	7.0	180	mV
Input Regulation	Reg line	Fig. 1	Tj=25	13V VIN 19V	-	2.5	90	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	12	180	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	4.0	90	mV
Output Voltage	VOUT	Fig. 1	11.5V VIN 26V		8.55	-	9.45	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.3	8.0	mA
Quiescent Current Change	IB	Fig. 1	11.5V VIN 26V		-	-	1.0	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	75	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 12.5V VIN 22.5V,		56	72	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	1.0	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-1.1	-	mV/

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Page 8

KIA7810AP

ELECTRICAL CHARACTERISTICS (VIN=16V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		9.6	10.0	10.4	V
Input Regulation	Reg line	Fig. 1	Tj=25	12.5V VIN 27V	-	8	200	mV
Input Regulation	Reg line	Fig. 1	Tj=25	14V VIN 20V	-	2.5	100	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	12	200	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	4	100	mV
Output Voltage	VOUT	Fig. 1	12.5V VIN 25V		9.5	-	10.5	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.3	8.0	mA
Quiescent Current Change	IB	Fig. 1	12.5V VIN 27V		-	-	1.0	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	80	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 13.5V VIN 23.5V,		55	72	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	0.9	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-1.3	-	mV/

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Page 9

KIA7812AP

ELECTRICAL CHARACTERISTICS (VIN=19V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		11.5	12.0	12.5	V
Input Regulation	Reg line	Fig. 1	Tj=25	14.5V VIN 30V	-	10	240	mV
Input Regulation	Reg line	Fig. 1	Tj=25	16V VIN 22V	-	3	120	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	12	240	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	4	120	mV
Output Voltage	VOUT	Fig. 1	14.5V VIN 27V		11.4	-	12.6	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.3	8.0	mA
Quiescent Current Change	IB	Fig. 1	14.5V VIN 30V		-	-	1.0	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	90	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 15V VIN 25V,		55	71	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	0.7	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-1.6	-	mV/

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Page 10

KIA7815AP

ELECTRICAL CHARACTERISTICS (VIN=23V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		14.4	15.0	15.6	V
Input Regulation	Reg line	Fig. 1	Tj=25	17.5V VIN 30V	-	11	300	mV
Input Regulation	Reg line	Fig. 1	Tj=25	20V VIN 26V	-	3	150	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	12	300	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	4	150	mV
Output Voltage	VOUT	Fig. 1	17.5V VIN 30V		14.25	-	15.75	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.4	8.0	mA
Quiescent Current Change	IB	Fig. 1	17.5V VIN 30V		-	-	1.0	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	110	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 18.5V VIN 28.5V,		54	70	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	0.5	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-2.0	-	mV/

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Page 11

KIA7818AP

ELECTRICAL CHARACTERISTICS (VIN=27V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		17.3	18.0	18.7	V
Input Regulation	Reg line	Fig. 1	Tj=25	21V VIN 33V	-	13	360	mV
Input Regulation	Reg line	Fig. 1	Tj=25	24V VIN 30V	-	4	180	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	12	360	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	4	180	mV
Output Voltage	VOUT	Fig. 1	21V VIN 33V		17.1	-	18.9	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.5	8.0	mA
Quiescent Current Change	IB	Fig. 1	21V VIN 33V		-	-	1.0	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	125	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 22V VIN 32V,		52	68	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	0.4	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-2.5	-	mV/

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Page 12

KIA7820AP

ELECTRICAL CHARACTERISTICS (VIN=29V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		19.2	20.0	20.8	V
Input Regulation	Reg line	Fig. 1	Tj=25	23V VIN 35V	-	15	400	mV
Input Regulation	Reg line	Fig. 1	Tj=25	26V VIN 32V	-	5	200	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	12	400	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	4	200	mV
Output Voltage	VOUT	Fig. 1	23V VIN 35V		19.0	-	21.0	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.6	8.0	mA
Quiescent Current Change	IB	Fig. 1	23V VIN 35V		-	-	1.0	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	135	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 24V VIN 34V,		50	66	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	0.4	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-3.0	-	mV/

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Page 13

KIA7824AP

ELECTRICAL CHARACTERISTICS (VIN=33V, IOUT=500mA, 0

Tj 125 )

CHARACTERISTIC	SYMBOL	TEST CIRCUIT	TEST CONDITION		MIN.	TYP.	MAX.	UNIT
Output Voltage	VOUT	Fig. 1	Tj=25 , IOUT=100mA		23.0	24.0	25.0	V
Input Regulation	Reg line	Fig. 1	Tj=25	27V VIN 38V	-	18	480	mV
Input Regulation	Reg line	Fig. 1	Tj=25	30V VIN 36V	-	6	240	mV
Load Regulation	Reg load	Fig. 1	Tj=25	5mA IOUT 1.5A	-	12	480	mV
Load Regulation	Reg load	Fig. 1	Tj=25	250mA IOUT 750mA	-	4	240	mV
Output Voltage	VOUT	Fig. 1	27V VIN 38V		22.8	-	25.2	V
Quiescent Current	IB	Fig. 1	Tj=25 , IOUT=5mA		-	4.6	8.0	mA
Quiescent Current Change	IB	Fig. 1	27V VIN 38V		-	-	1.0	mA
Output Noise Voltage	VNO	Fig. 2	Ta=25 , 10Hz f 100kHz		-	150	-	Vrms
Ripple Rejection Ratio	RR	Fig. 3	f=120Hz, 28V VIN 38V,		50	66	-	dB
Dropout Voltage	VD	Fig. 1	IOUT=1.0A, Tj=25		-	2.0	-	V
Short Circuit Current Limit	ISC	Fig. 1	Tj=25		-	0.3	-	A
Average Temperature Coefficient of Output Voltage	TCVO	Fig. 1	IOUT=5mA, 0 Tj 125		-	-3.5	-	mV/

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Page 14

TEST CIRCUIT

Fig. 1 Standard Test Circuit & Application Circuit

METER

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Page 15

APPLICATION CIRCUIT

(1) VOLTAGE BOOST REGULATOR

(a) Voltage boost by use of zener diode

VIN

VOUT = VOUT(IC) (1+ )

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Page 16

(2) CURRENT BOOST REGULATOR

VIN

VOUT

KIA78xx

PRECAUTIONS ON APPLICATION

(1) In regard to GND, be careful not to apply a negative voltage to the input/output terminal. Further, special care is necessary in case of a voltage boost application.

(2) When a surge voltage exceeding maximum rating is applied to the input terminal or when a voltage in excess of the input terminal voltage is applied to the output terminal, the circuit may be destroyed. Specially, in the latter case, great care is necessary Further, if the input terminal shorts to GND in a state of normal operation, the output terminal voltage becomes higher than the input voltage (GND potential), and the electric charge of a chemical capacitor connected to the output terminal flows into the input side, which may cause the destruction of circuit. In these cases, take such steps as a zener diode and a general silicon diode are connected

to the circuit, as shown in the following figure.

VIN

KIA78xx SERIES

Input surge

VZ VIN

protecting diode.

Output surge and input short protecting diode.

VOUT

(3) When the input voltage is too high, the power dissipation of three terminal regulator increase because of series regulator, so that the junction temperature rises. In such a case, it is recommended to reduce the power dissipation by inserting the power limiting resistor RSD in the input terminal, and to reduce the junction temperature as a result.

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Page 17

VIN

The power dissipation PD of IC is expressed in the following equation.

PD = (VIN'-VOUT) IOUT + VIN' IB

If VIN' is reduced below the lowest voltage necessary for the IC, the parasitic oscillation will be caused according to circumstances. In determining the resistance value of RSD, design with margin should be made by making reference to the following equation.

VIN - VIN' RSD < IOUT + IB

(4) Connect the input terminal and GND, and the output terminal and GND, by capacitor respectively. The capacitances should be determined experimentally because they depend on printed patterns. In particular, adequate investigation should be made so that there is no problem even at time of high or low temperature.

(5) Installation of IC for power supply For obtaining high reliability on the heat sink design of the regulator IC, it is generally required to derate more than 20% of maximum junction temperature (Tj MAX.) Further, full consideration should be given to the installation of IC to the heat sink.

(a) Heat sink design The thermal resistance of IC itself is required from the viewpoint of the design of elements, but the thermal resistance from the IC package to the open air varies with the contact thermal resistance. Table 1 shows how much the value of the contact thermal resistance ( C + S) is changed by insulating sheet (mica) and heat sink grease.

TABLE 1.

UNIT: /W

PACKAGE	MODEL NO.	TORQUE	MICA	C + S
TO-220AB	KIA78xxAP	6kg cm (0.6N/m)	Not Provided	0.3 0.5(1.5 2.0)
TO-220AB	KIA78xxAP	6kg cm (0.6N/m)	Provided	2.0 2.5(4.0 6.0)

The figures given in parentheses denote the values at time of no grease. The package of regulator IC serves as GND, therefore, usually use the value at time of "no mica" (b) Silicon grease When a circuit not exceeding maximum rating is designed, it is to be desired that the grease should be used if possible. If it is required that the contact thermal resistance is reduced from the view-point of the circuit design, It is recommended that the following methods be adopted.

A: Use Thercon (Fuji High Polymer Kogyo K.K) B: Use SC101 (Torei Silicon) or G-640 (GE), if grease is used.

(c) Torque When installing IC on a heat sink or the like, tighten the IC with the torque of less than the rated value. If it is tightened with the torque in excess of the rated value, sometimes the internal elements of the IC are adversely affected. Therefore, great care should be given to the installing operation. Further, if polycarbonate screws are used, the torque causes a change with the passage of time, which may lessen the effect of radiation.

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Page 18

(6) IEC (International Electronical Commission)-65 Specification.

(a) IEC (International Electronical Commission)-65 is the standard, parts testing method, machinery and tolls (used in connecting main power directly and indirectly) Which are used at home and general building. The purpose of the above standard is not to breaking out the risk which is related to an electric shock, a heating, a fire and the damage of surrounding parts in the case of normal or abnormal operating.

(b) In case temperature is limited by temperature overheating prevention device, fuse or the operation of fuse resistor One must calculate the temperature of PCB substrate in 2 minute.

T 110 regulated T=T(The PCB substrate temperature in 2 minute) -Ta(Ambient temperature)

(c) Graph As the territory of the deviant line appear by the heat, as the area is wider, T(The PCB substrate temperature in 2 minute) is becoming high.

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Page 19

Fig. 4

Fig. 5

I - T

V - T j

B j

OUT

0 50 100

0 50 100 150

150

JUNCTION TEMPERATURE T ( C)

Fig. 6

Fig. 7

RR - I

V - I

OUT

IN SC

10 30 50 100

300 500 1000

0 10 20 30 40

OUTPUT CURRENT I (mA)

INPUT VOLTAGE V (V)

OUT

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Page 20

Fig. 8

Fig. 9

V - T

Z - f

j D

OUT

100k

100

10k

0 50 100

150

FREQUENCY f (Hz)

JUNCTION TEMPERATURE T ( C)

Fig. 10

PD - Ta

20/20

Selected Specification

KEC(Korea Electronics) 7812 overview.

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Overview

7812 is listed in the Power Management category. Available datasheets include documents from Silicon Supplies, Analog Devices, Fairchild Semiconductor and 2 more. DigiCamel provides a local PDF and searchable HTML technical text for online reference.

Summary

THREE TERMINAL POSITIVE VOLTAGE REGULATORS

Description

THREE TERMINAL POSITIVE VOLTAGE REGULATORS

Source title 7812 Datasheet(PDF) - KEC(Korea Electronics)

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