Date: 7/28/06 Rev E SP78XX 3-Terminal Positive Linear Regulators
2006 Sipex Corporation
general Description
The S
P78XX series are monolithic integrated circuits designed as fixed-voltage regulators for a wide variety of
applications including local, on-card regulation.
This series of regulators are complete with internal current limiting, thermal shutdown protection, and safe-area
compensation which make them virtually immune from output overload. If adequate heat sinking are provided,
these regulators can deliver output currents up to 1.0A.
The S
P78XX series are available in two standard plastic packages: TO-220 and TO-252.
Features
Output Current up to 1.0A
Fixed Output Voltage
s of 5V and 12V
Output Voltage Tolerances of 5% over the Full
Temperature Range
Internal Short Circuit Current-limiting
Internal Thermal Overload Protection
Available in Lead Free, RoHS Compliant
Packages
applications
Consumer Electronics
Microprocessor Power Supply
Mother Board I/O Power Supply
Figure . Package Types of SP78XX
TO-220
TO-22
TO-220 Package
INPUT
OUTPUT
GND
2
3
SP78XX
3-Terminal Positive Regulators
Solved by
TM
2
Date: 8/3/06 Rev F SP78XX 3-Terminal Positive Linear Regulators
2006 Sipex Corporation
Pin configuration
Pin Description
Pin Number
Pin Name
Function
1
INPUT
Voltage Input
2
GND
Ground
3
OUTPUT
Voltage Output
Figure 2. Pin Configuration of SP78XX (Top View)
V Package
(TO-220)
INPUT
OUTPUT
GND
2
3
2
3
INPUT
OUTPUT
GND
V
2 Package
(TO-22)
3
Date: 7/28/06 Rev E SP78XX 3-Terminal Positive Linear Regulators
2006 Sipex Corporation
Functional Block Diagram
Figure 3. Functional Block Diagram of SP78XX
R
R7
R
R3
R
C
R
R
R8
R
R
D
Zener
R6
R7
R20
R23
R2
R2
2
OUTPUT
INPUT
R2
R2
R
Q23
Q6
Q3
Q
Q
Q8
Q2
Q22
Q2
Q6
Q2
Q
Q
Q
Q7
Q0
Q8
Q
R8
R0
R6
R3
C2
Q2
Q
Q3
Q7
Q
Q20
GND
Date: 8/3/06 Rev F SP78XX 3-Terminal Positive Linear Regulators
2006 Sipex Corporation
Recommended Operating conditions
Parameter
Symbol
Min
Max
Unit
Supply Voltage
V
CC
7.5
18
V
Operating Junction Temperature Range
T
J
-40
125
absolute Maximum Ratings (note 1)
Parameter
Symbol
Value
Unit
Input Voltage
V
IN
20
V
Lead Temperature (Soldering, 10sec)
300
o
C
Power Dissipation
P
D
Internally Limited
Storage Temperature Range
T
STG
-65 to 150
o
C
ESD (Machine Model)
ESD
500
V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Max-
imum Ratings" for extended periods may affect device reliability.
Date: 7/28/06 Rev E SP78XX 3-Terminal Positive Linear Regulators
2006 Sipex Corporation
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=25
o
C
4.9
5.0
5.1
V
I
O
=5mA to 1A, V
I
=7.5 to 15V, P
D
15W
4.8
5.0
5.2
Line Regulation
V
RLINE
V
I
=8V to 15V, I
O
=1A, T
J
=25
o
C
1
20
mV
Load Regulation
V
RLOAD
V
I
=10V, I
O
=5mA to 1A, T
J
=25
o
C
10
35
mV
Quiescent Current
I
Q
V
I
=10V
3.2
6.0
mA
Quiescent Current Change
I
Q
V
I
=8V to 15V, I
O
=500mA, T
J
=25
o
C
0.3
0.8
mA
I
O
=5mA to 1A, T
J
=25
o
C
0.08
0.5
Ripple Rejection
V
I
/ V
O
V
I
=8V to 15V, f=120Hz, I
O
=300mA
63
73
dB
Dropout Voltage
V
I
-V
O
V
O
/V
O
=1%, I
O
=1A, T
J
=25
o
C
2.0
V
Output Noise Voltage
N
O
f=10Hz to 100KHz, T
A
=25
o
C
10
V/V
O
Output Resistance
R
O
f=1.0kHz
10
m
Short Circuit Current
I
PK
V
I
=15V, T
A
=25
o
C
0.8
A
Peak Output Current
I
MAX
V
I
=10V, T
J
=25
o
C
2.2
A
Output Voltage Drift
V
O
/ T
-0.3
mV/
o
C
electrical characteristics
S
P7805 (V
I
=10V, I
O
=1A, T
J
=-40 to 125
o
C, unless otherwise specified.)
electrical characteristics
S
P7812 (V
I
=17V, I
O
=1A, T
J
=-40 to 125
o
C, unless otherwise specified.)
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Output Voltage
V
O
T
J
=25
o
C
11.5
12
12.5
V
I
O
=5mA to 1A, V
I
=14.8 to 17V, P
D
15W
11.4
12
12.6
Line Regulation
V
RLINE
V
I
=14.5 to 18V, I
O
=1A, T
J
=25
o
C
2.2
20
mV
Load Regulation
V
RLOAD
V
I
=17V, I
O
=5mA to 1A, T
J
=25
o
C
8.1
60
mV
Quiescent Current
I
Q
V
I
=17V
3.4
6.5
mA
Quiescent Current
Change
I
Q
V
I
=14.5 to 17V, I
O
=1A, T
J
=25
o
C
0.7
mA
I
O
=5.0mA to 1A, T
J
=25
o
C
0.5
Ripple Rejection
V
I
/ V
O
V
I
=15V to 17V, f=120Hz, I
O
=300mA
55
60
dB
Dropout Voltage
V
I
-V
O
V
O
/V
O
=1%, I
O
=1A, T
A
=25
o
C
2.0
V
Output Noise Voltage
N
O
f=10Hz to 100KHz, T
A
=25
o
C
10
V/V
O
Output Resistance
R
O
f=1.0KHz
13
m
Short Circuit Current
I
PK
V
I
=15V, T
A
=25
o
C
0.8
A
Peak Output Current
I
MAX
V
I
=17V, T
J
=25
o
C
2.2
A
Output Voltage Drift
V
O
/ T
-0.8
mV/
o
C
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