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NCV7812BT Datasheet

  • NCV7812BT

  • THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS

  • 32頁

  • ONSEMI

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MC7800, MC7800A,
NCV7805
1.0 A Positive Voltage
Regulators
These voltage regulators are monolithic integrated circuits designed
as fixed鈭抳oltage regulators for a wide variety of applications
including local, on鈭抍ard regulation. These regulators employ internal
current limiting, thermal shutdown, and safe鈭抋rea compensation. With
adequate heatsinking they can deliver output currents in excess of
1.0 A. Although designed primarily as a fixed voltage regulator, these
devices can be used with external components to obtain adjustable
voltages and currents.
鈥?/div>
Output Current in Excess of 1.0 A
鈥?/div>
No External Components Required
鈥?/div>
Internal Thermal Overload Protection
鈥?/div>
Internal Short Circuit Current Limiting
鈥?/div>
Output Transistor Safe鈭扐rea Compensation
鈥?/div>
Output Voltage Offered in 2% and 4% Tolerance
鈥?/div>
Available in Surface Mount D
2
PAK鈭?, DPAK鈭? and Standard
3鈭扡ead Transistor Packages
鈥?/div>
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
鈥?/div>
Pb鈭扚ree Packages are Available
MAXIMUM RATINGS
(T
A
= 25擄C, unless otherwise noted)
Value
Rating
Input Voltage
Power Dissipation
Thermal Resistance,
Junction鈭抰o鈭扐mbient
Thermal Resistance,
Junction鈭抰o鈭扖ase
Storage Junction Temperature
Range
Operating Junction Temperature
(5.0 鈭?18 V)
(24 V)
Symbol
V
I
P
D
R
qJA
R
qJC
T
stg
T
J
369C 221A
35
40
Internally Limited
92
5.0
65
5.0
鈭?5 to +150
+150
Figure
14
5.0
936
Vdc
W
擄C/W
擄C/W
擄C
擄C
Unit
http://onsemi.com
TO鈭?20鈭?
T SUFFIX
CASE 221A
1
Heatsink surface
connected to Pin 2.
3
Pin 1. Input
2. Ground
3. Output
D
2
PAK鈭?
D2T SUFFIX
CASE 936
2
1
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
4
1 2
3
DPAK鈭?
DT SUFFIX
CASE 369C
STANDARD APPLICATION
Input
C
in
*
0.33
mF
MC78XX
Output
C
O
**
A common ground is required between the
input and the output voltages. The input voltage
must remain typically 2.0 V above the output
voltage even during the low point on the input
ripple voltage.
XX, These two digits of the type number
indicate nominal voltage.
* C
in
is required if regulator is located an
appreciable distance from power supply
filter.
** C
O
is not needed for stability; however,
it does improve transient response. Values
of less than 0.1
mF
could cause instability.
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
*This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL_STD_883, Method 3015.
Machine Model Method 200 V.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 22 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 28 of this data sheet.
漏
Semiconductor Components Industries, LLC, 2005
1
April, 2005 鈭?Rev. 14
Publication Order Number:
MC7800/D

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