Solved by
SP78MXX
TM
500mA 3-Terminal Positive Voltage Regulator
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Features
Output Current up to 0.5A
Fixed Output Voltages 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 Packaging
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TO-220 Package
3
2
1
OUTPUT
GND
INPUT
Applications
Consumer Electronics
Microprocessor Power Supply
Mother Board I/O Power Supply
general Description
The SP78MXX 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 0.5A.
The SP78MXX series are available in two standard plastic packages: TO-220 and TO-252.
TO-220
TO-252
Figure 1. Package Types of SP78MXX
Date: 8/0/06 Rev G
SP78MXX 500mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
Pin configuration
V Package
(TO-220)
3
2
1
OUTPUT
GND
INPUT
V2 Package
(TO-252)
3
2
1
OUTPUT
GND
INPUT
Figure 2. Pin Configuration of SP78MXX (Top View)
Pin Description
Pin Number
Pin Name
Function
1
2
3
INPUT
GND
OUTPUT
Voltage Input
Ground
Voltage Output
Functional Block Diagram
INPUT
R9
Q9
Q14
R16
Q21
Q24
C1
R20
R21
R23
OUTPUT
R1
Q18
R12
Q3
Q6
Q10
R3
Q11
Q7
R7
Q16
R4
Q8
R5
R6
Q13
Q15
C2
Q19
Q12
R2
R8
R10
Q17
Q20
R13
R11
R15
Q23
R19
R14
Q22
R18
R17
R2
2
Q1
Q4
Q2
Q5
GND
Figure 3. Functional Block Diagram of SP78MXX
Date: 8/0/06 Rev G
SP78MXX 500mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
2
Absolute Maximum Ratings (note 1)
Parameter
Input Voltage
Lead Temperature (Soldering, 10 sec.)
Power Dissipation
Storage Temperature Range
ESD (Machine Model)
P
D
T
STG
ESD
Symbol
V
IN
Value
20
300
Internally Limited
-65 to 150
450
o
Unit
V
o
C
C
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.
Recommended Operating conditions
Parameter
Supply Voltage
Operating Junction Temperature Range
Symbol
V
CC
T
J
Min
7.5
-40
Max
18
125
Unit
℃
V
Date: 8/0/06 Rev G
SP78MXX 500mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
3
electrical characteristics
SP78M05
(V
IN
=10V, I
OUT
=350mA, T
J
=-40
o
C to 125
o
C, P
D
≤
5W, unless otherwise noted)
Parameter
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Ripple Rejection
Dropout Voltage
Output Noise Voltage
Short Circuit Current
Peak Output Current
Output Voltage Drift
Symbol
V
OUT
V
RLINE
V
RLOAD
I
Q
I
Q
T
J
=25
o
C
V
IN
=7V to 15V, I
OUT
=5mA to 350mA
T
J
=25
o
C, V
IN
=7V to 15V, I
OUT
=200mA
T
J
=25
o
C, I
OUT
=5mA to 500mA
T
J
=25
o
C
V
IN
=8V to 15V, I
OUT
=200mA
I
OUT
=5mA to 350mA
62
73
2
40
350
700
± 0.2
V
OUT
=1%, T
J
=25
o
C
T
A
=25
o
C, f=10Hz to 100KHz
T
J
=25
o
C, V
IN
=15V
T
J
=25
o
C
I
OUT
=5mA
Conditions
Min
4.8
4.75
Typ
5
5
3
20
3.2
Max
5.2
5.25
50
100
6
0.8
0.5
Unit
V
V
mV
mV
mA
mA
dB
V
V
mA
mA
mV/
o
C
V
IN
/ V
OUT
V
IN
=8V to 15V, f=120Hz, I
OUT
=200mA
V
IN
-V
OUT
N
O
I
SC
I
PK
V
OUT
/ T
SP78M12
(V
IN
=17V, I
OUT
=350mA, T
J
=-40
o
C to 125
o
C, P
D
≤
5W, unless otherwise noted)
Parameter
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Ripple Rejection
Dropout Voltage
Output Noise Voltage
Short Circuit Current
Peak Output Current
Output Voltage Drift
Symbol
V
OUT
V
RLINE
V
RLOAD
I
Q
I
Q
T
J
=25
o
C
V
IN
=14.5V to 17V, I
OUT
=5mA to 350mA
T
J
=25
o
C, V
IN
=14.5V to 17V, I
OUT
=200mA
T
J
=25
o
C, I
OUT
=5mA to 500mA
T
J
=25
o
C
V
IN
=14.5V to 17V, I
OUT
=200mA
I
OUT
=5mA to 350mA
55
60
2
75
350
700
± 0.3
V
OUT
=1%,
T
J
=25
o
C
Conditions
Min
11.5
11.4
Typ
12
12
8
25
3.2
Max
12.5
12.6
50
240
6
0.8
0.5
Unit
V
V
mV
mV
mA
mA
dB
V
V
mA
mA
mV/
o
C
V
IN
/ V
OUT
V
IN
=15V to 17V, f=120Hz, I
OUT
=200mA
V
IN
-V
OUT
N
O
I
SC
I
PK
V
OUT
/ T
T
A
=25
o
C, f=10Hz to 100KHz
T
J
=25
o
C, V
IN
=17V
T
J
=25
o
C
I
OUT
=5mA
Date: 8/0/06 Rev G
SP78MXX 500mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
Typical Performance characteristics
5.10
2.0
1.8
T
J
= -40 C
T
J
= 25 C
T
J
= 125 C
o
o
o
5.05
1.6
Output Voltage (V)
Output Current (A)
140
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2
4
6
8
10
5.00
4.95
SP78M05
I
OUT
=5mA
I
OUT
=500mA
120
4.90
-40
-20
0
20
40
60
80
o
100
12
14
Junction Temperature ( C)
Dropout Voltage (V)
Figure 4. Output Voltage vs. Junction Temperature
Figure 5. Peak Output Current vs. Dropout Voltage
2.5
4.0
3.8
Quiescent Current (mA)
2.0
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
140
Dropout Voltage (V)
1.5
1.0
0.5
I
OUT
=100mA
I
OUT
=350mA
I
OUT
=500mA
S
P78
M05
V
I N
=10V
I
OUT
=0
-20
0
20
40
60
80
o
0.0
-40
-20
0
20
40
60
80
o
100
120
2.0
-40
100
120
140
Junction Temperature ( C)
Junction Temperature ( C)
Figure 6. Dropout Voltage vs. Junction Temperature
Figure 7. Quiescent Current vs. Junction Temperature
Date: 8/0/06 Rev G
SP78MXX 500mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
5
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