參數(shù)資料
型號(hào): MC7812ABT
廠商: ON SEMICONDUCTOR
元件分類: 固定正電壓?jiǎn)温份敵鰳?biāo)準(zhǔn)穩(wěn)壓器
英文描述: 1.0A positive voltage regulators
中文描述: 12 V FIXED POSITIVE REGULATOR, SFM3
封裝: TO-220, 3 PIN
文件頁(yè)數(shù): 1/33頁(yè)
文件大?。?/td> 289K
代理商: MC7812ABT
Semiconductor Components Industries, LLC, 2010
July, 2010 Rev. 21
1
Publication Order Number:
MC7800/D
MC7800, MC7800A,
MC7800AE, NCV7800
1.0 A Positive Voltage
Regulators
These voltage regulators are monolithic integrated circuits designed
as fixedvoltage regulators for a wide variety of applications
including local, oncard regulation. These regulators employ internal
current limiting, thermal shutdown, and safearea 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.
Features
Output Current in Excess of 1.0 A
No External Components Required
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor SafeArea Compensation
Output Voltage Offered in 1.5%, 2% and 4% Tolerance
Available in Surface Mount D2PAK3, DPAK3 and Standard
3Lead Transistor Packages
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
PbFree Packages are Available
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted)
Rating
Symbol
Value
Unit
369C 221A
936
Input Voltage
(5.0 18 V)
(24 V)
VI
35
40
Vdc
Power Dissipation
PD
Internally Limited
W
Thermal Resistance,
JunctiontoAmbient
RqJA
92
65
Figure
°C/W
Thermal Resistance,
JunctiontoCase
RqJC
5.0
°C/W
Storage Junction Temperature
Range
Tstg
65 to +150
°C
Operating Junction Temperature
TJ
+150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum
Ratings are stress ratings only. Functional operation above the Recommended
Operating Conditions is not implied. Extended exposure to stresses above the
Recommended Operating Conditions may affect device reliability.
*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.
TO2203
T SUFFIX
CASE 221AB
1
D2PAK3
D2T SUFFIX
CASE 936
2
3
See detailed ordering and shipping information in the package
dimensions section on page 23 of this data sheet.
ORDERING INFORMATION
Heatsink surface
connected to Pin 2.
Pin 1. Input
2. Ground
3. Output
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
1
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 the output
voltage even during the low point on the input
ripple voltage.
XX,
MC78XX
Input
Cin*
0.33
mF
CO**
Output
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 is not needed for stability; however,
it does improve transient response. Values
of less than 0.1 mF could cause instability.
*
**
See general marking information in the device marking
section on page 30 of this data sheet.
DEVICE MARKING INFORMATION
DPAK3
DT SUFFIX
CASE 369C
http://onsemi.com
1 2
3
4
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