NCP7800
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10
Figure 13. Worst Case Power Dissipation vs.
Ambient Temperature (TO220)
Figure 14. Input Output Differential as a Function
of Junction Temperature
, POWER DISSIPATION (W)
D
20
16
12
8.0
4.0
0
-50 -25 0 25 50 75 100 125 150
T
A
, AMBIENT TEMPERATURE (°C)
P
DIFFERENTIAL (V)
in out
, INPUT-OUTPUT VOLTAGE
0.5
0
-75 -50 -25 0 25 50 75 100
T
J
, JUNCTION TEMPERATURE (°C)
- VV
DV
O
= 2% of V
O
2.0
1.5
1.0
2.5
125
q
HS
= 0°C/W
q
HS
= 5°C/W
q
HS
= 15°C/W
No Heatsink
q
JC
= 7.5°C/W
q
JA
= 65°C/W
T
J(max)
= 150°C
I
O
= 1.0 A
I
O
= 500 mA
I
O
= 200 mA
I
O
= 20 mA
I
O
= 0 mA
Protection Diode
The NCP7800 Series has internal low impedance (about
1 W) diode path that normally does not require protection
when used in the typical regulator applications. The path
connects between output and input and it can withstand a
peak surge current of about 5 A for a reasonable time
(several milliseconds). Normal cycling of Vin cannot
generate a current surge of this magnitude for too long time
since output capacitor discharges from output to input and
follows input voltage therefore the magnitude of reverse
current is not so high. However, when Vin is shorted or
crowbarred to ground and output cap is too large and
moreover if higher voltage option is used then the peak of
reverse current is much higher than 5 A and lasts more than
several milliseconds. In this case a damage may occur to the
regulator.
To protect the regulator the external bypass diode
connected between output and input is recommended. The
protection diode should be rated for sufficient peak current.
Figure 15. Protection Diode Placement
Input
Cin
NCP78XX
Protection Diode
Cout
Output
NCP7800
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11
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.
Quiescent 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.
ORDERING INFORMATION
Device Nominal Voltage
Operating
Temperature Range
Package Shipping
NCP7805TG 5.0 V T
J
= 0°C to +125°C TO220
(PbFree)
50 Units / Rail
NCP7808TG 8.0 V T
J
= 0°C to +125°C TO220
(PbFree)
50 Units / Rail
NCP7812TG 12 V T
J
= 0°C to +125°C TO220
(PbFree)
50 Units / Rail
NCP7815TG 15 V T
J
= 0°C to +125°C TO220
(PbFree)
50 Units / Rail
NCP7800
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12
PACKAGE DIMENSIONS
TO220, SINGLE GAUGE
T SUFFIX
CASE 221AB01
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION Z DEFINES A ZONE WHERE ALL
BODY AND LEAD IRREGULARITIES ARE
ALLOWED.
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A 0.570 0.620 14.48 15.75
B 0.380 0.405 9.66 10.28
C 0.160 0.190 4.07 4.82
D 0.025 0.035 0.64 0.88
F 0.142 0.147 3.61 3.73
G 0.095 0.105 2.42 2.66
H 0.110 0.155 2.80 3.93
J 0.018 0.025 0.46 0.64
K 0.500 0.562 12.70 14.27
L 0.045 0.060 1.15 1.52
N 0.190 0.210 4.83 5.33
Q 0.100 0.120 2.54 3.04
R 0.080 0.110 2.04 2.79
S 0.020 0.055 0.508 1.39
T 0.235 0.255 5.97 6.47
U 0.000 0.050 0.00 1.27
V 0.045 --- 1.15 ---
Z --- 0.080 --- 2.04
B
Q
H
Z
L
V
G
N
A
K
F
123
4
D
SEATING
PLANE
T
C
S
T
U
R
J
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
NCP7800/D
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 8002829855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81357733850
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 3036752175 or 8003443860 Toll Free USA/Canada
Fax: 3036752176 or 8003443867 Toll Free USA/Canada
Email: orderlit@onsemi.com
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative

NCP7812TG

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
Linear Voltage Regulators ANA 1A 12V VREG
Lifecycle:
New from this manufacturer.
Delivery:
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