MC7900_13 datasheet(10/16 Pages) ONSEMI

tên linh kiện	MC7900

Giải thích chi tiết về linh kiện	1.0 A Negative Voltage Regulators

Download	16 Pages

Scroll/Zoom	100%

nhà sản xuất	ONSEMI [ON Semiconductor]

Trang chủ	http://www.onsemi.com

Logo

10 / 16 page

MC7900 Series

http://onsemi.com

10

Protection Diodes

When external capacitors are used with MC7900 series

regulator it is sometimes necessary to add protection diodes

to prevent the capacitors from discharging through low

current points into the regulator or from output polarity

reversals

. Generally, no protection diode is required for

values of output capacitance less then 10

mF. Figure 11 shows

the MC7915 with the recommended protection diodes.

• Opposite Polarity Protection

Diode D1 protects the regulator from output polarity

reversals during startup, power off and short-circuit

operation.

• Reverse-bias Protection

Diode D2 prevents output capacitor from discharging thru

the MC7915 during an input short circuit or fast switch off

of power supply.

Figure 11. Protection Diodes

Gnd

+

-20 V

Input

-15 V

Output

MC7915

+

1.0

mF

1.0

mF

MBRS140

or Equiv

D1

MBRS140

or Equiv

D2

DEFINITIONS

Line Regulation − The change in output voltage for a

change in the input voltage. The measurement is made under

conditions of low dissipation or by using pulse techniques

such that the average chip temperature is not significantly

affected.

Load Regulation − The change in output voltage for a

change in load current at constant chip temperature.

Maximum Power Dissipation − The maximum total

device dissipation for which the regulator will operate

within specifications.

Input Bias Current − That part of the input current that

is not delivered to the load.

Output Noise Voltage − The rms AC voltage at the

output, with constant load and no input ripple, measured

over a specified frequency range.

Long Term Stability − Output voltage stability under

accelerated life test conditions with the maximum rated

voltage listed in the devices’ electrical characteristics and

maximum power dissipation.

Figure 12. D2PAK Thermal Resistance and Maximum

Power Dissipation versus P.C.B. Copper Length

PD(max) for TA = +50°C

30

40

50

60

70

80

010

20

30

25

15

5.0

L, LENGTH OF COPPER (mm)

Minimum

Size Pad

2.0 oz. Copper

L

Free Air

Mounted

Vertically

RqJA

1.0

1.5

2.0

2.5

3.0

3.5

Số phần tương tự - MC7900_13

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
ON Semiconductor	MC7900	138Kb / 16P	1.0 A Negative Voltage Regulators May, 2005 ??Rev. 13
	MC7900	157Kb / 16P	1.0 A Negative Voltage Regulators August, 2006 ??Rev. 14
	MC7900	300Kb / 15P	Negative Voltage Regulators 1.0 A October, 2021 - Rev. 21

More results

Mô tả tương tự - MC7900_13

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
ON Semiconductor	MC7900	138Kb / 16P	1.0 A Negative Voltage Regulators May, 2005 ??Rev. 13
	MC7900	157Kb / 16P	1.0 A Negative Voltage Regulators August, 2006 ??Rev. 14
	MC7900	143Kb / 14P	1.0 A Negative Voltage Regulators March, 2004 ??Rev. 12
	MC7900	300Kb / 15P	Negative Voltage Regulators 1.0 A October, 2021 - Rev. 21
	MC7800	295Kb / 33P	1.0 A Positive Voltage Regulators July, 2010 ??Rev. 21
	MC7800	269Kb / 34P	1.0 A Positive Voltage Regulators April, 2012 ??Rev. 25
Suntac Electronic Corp.	STC7800	169Kb / 11P	1.0 A Positive Voltage Regulators
ON Semiconductor	MC7800	245Kb / 32P	1.0 A Positive Voltage Regulators August, 2006 ??Rev. 15
	NCP7800	167Kb / 9P	1.0 A Positive Voltage Regulators October, 2009 ??Rev. 0
	MC7800	217Kb / 31P	1.0 A Positive Voltage Regulators November, 2014 ??Rev. 27

More results

MC7900 bảng dữ liệu(PDF) 10 Page - ON Semiconductor

MC7900 bảng dữ liệu(HTML) 10 Page - ON Semiconductor

Số phần tương tự - MC7900_13

Mô tả tương tự - MC7900_13

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

bảng dữ liệu tải về

Link URL