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MC7908CD2TG Datasheet(PDF) 1 Page - ON Semiconductor

Part # MC7908CD2TG
Description  1.0 A Negative Voltage Regulators
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2005
May, 2005 − Rev. 13
1
Publication Order Number:
MC7900/D
MC7900 Series
1.0 A Negative Voltage
Regulators
The MC7900 series of fixed output negative voltage regulators are
intended as complements to the popular MC7800 series devices.
These negative regulators are available in the same seven−voltage
options as the MC7800 devices. In addition, one extra voltage option
commonly employed in MECL systems is also available in the
negative MC7900 series.
Available in fixed output voltage options from − 5.0 V to − 24 V,
these regulators employ current limiting, thermal shutdown, and
safe−area compensation − making them remarkably rugged under
most operating conditions. With adequate heatsinking they can deliver
output currents in excess of 1.0 A.
No External Components Required
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe−Area Compensation
Available in 2% Voltage Tolerance (See Ordering Information)
Pb−Free Package May be Available. The G−Suffix Denotes a
Pb−Free Lead Finish
Figure 1. Representative Schematic Diagram
Gnd
VO
VI
3.6 k
1.2 k
1.1 k
2.0 k
2.0 k
8.0 k
1.0 k
1.6 k
4.0 k
0.3
10 k
10 k
20 k
20 k
20 pF
10 pF
240
750
R1
R2
This device contains 26 active transistors.
http://onsemi.com
TO−220
T SUFFIX
CASE 221A
Heatsink surface
connected to Pin 2.
Pin 1. Ground
2. Input
3. Output
D2PAK
D2T SUFFIX
CASE 936
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
1
2
3
1
2
3
STANDARD APPLICATION
A common ground is required between the input
and the output voltages. The input voltage must
remain typically 2.0 V above more negative even
during the high point of the input ripple voltage.
These two digits of the type number
indicate nominal voltage.
Cin is required if regulator is located an
appreciable distance from power supply filter.
CO improve stability and transient response.
MC79XX
Input
Cin*
0.33
mF
CO**
1.0
mF
Output
XX,
**
**
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
ORDERING INFORMATION
See general marking information in the device marking
section on page 14 of this data sheet.
DEVICE MARKING INFORMATION


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