Solved by
SP78LXX
TM
100mA 3-Terminal Positive Voltage Regulator
Features
Output Current up to 100 mA
Fixed Output Voltage of 5V and 12V
Output Voltage Tolerances of
5% over the Full
Temperature Range
Internal Short Circuit Current-Limiting
Internal Thermal Overload Protection
No External Components
Available in Lead Free, RoHS Compliant Packaging
SOT-8 Package
3
GND
2
1
INPUT
GND
OUTPUT
Applications
High Efficiency Linear Regulator
Post Regulation for Switching Supply
Microprocessor Power Supply
Mother Board I/O Power Supply
general Description
The SP78LXX series are three terminal positive regulators with several fixed output voltages. These regulators can pro-
vide local on-card regulation, eliminating distribution problems associated with single point regulation. The SP78LXX
can be used in logic systems, instrumentation, HiFi, and other solid state electronic equipment. When used as a Zener
diode/resistor combination replacement, the SP78LXX usually results an effective output impedance improvement of
two orders of magnitude, and lower quiescent current.
With adequate heat sinking the SP78LXX can deliver 100 mA output current. Current limiting is included to limit the peak
output current to a safe value. Thermal protection is also provided. If internal power dissipation becomes too high for the
heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating.
The SP78LXX are available in the plastic TO-92, NSOIC-8, SOT-223 and SOT-89 packages.
TO-2
NSOIC-8
SOT-223
SOT-8
Figure . Package Types of the SP78LXX
Date: 8/3/06 Rev H
SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
Pin configuration
N Package
(TO-2)
M3 Package
(SOT-223)
3
GND
2
1
INPUT
GND
OUTPUT
3
2
1
INPUT
GND
OUTPUT
Connect pin to pin 2 or leave
pin electrically isolated
N Package
(NSOIC-8)
OUTPUT
GND
GND
N/C
2
3
8
7
6
INPUT
GND
GND
N/C
GND
M Package
(SOT-8)
3
2
1
INPUT
GND
OUTPUT
Figure 2. Pin Configuration of the SP78LXX (Top View)
Functional Block Diagram
3 (8)
INPUT
1
OUTPUT
A(B)
A for 3-pin
B for 8-pin
2, 4 (2, 3, 6, 7)
GND
Figure 3. Functional Block Diagram of the SP78LXX
Date: 8/3/06 Rev H
SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
2
Absolute Maximum Ratings (note 1)
Parameter
Input Voltage
Operating Junction Temperature Range
Lead Temperature (Soldering, 10sec)
Power Dissipation (T
A
=25
o
C)
Symbol
V
CC
T
J
T
LEAD
P
D
TO-92
NSOIC
SOT-223
SOT-89
Storage Temperature Range
ESD (Machine Model)
T
STG
-65 to 150
300
Value
20
0 to125
265
0.65
0.6
0.7
0.65
o
C
Unit
V
o
C
o
C
W
V
N
ote 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
Operating Junction Temperature Range
Symbol
T
J
Min
0
Max
125
Unit
o
C
electrical characteristics
SP78L05 electrical characteristics
Limits in standard typeface are for T
J
=25
o
C
,
Bold typeface applies over 0
o
C
to 125
o
C,
I
O
=40 mA, C
I
=0.33 F,
C
O
=0.1 F, V
I
=10V, unless otherwise specified.
Parameter
Output Voltage
Symbol
V
O
7.0V
1.0mA
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Ripple Rejection
Peak Output Current
Average Temperature Coefficient of
Output Voltage
Minimum Value of Input Voltage
Required to Maintain Line Regula-
tion
V
RLINE
V
RLOAD
I
Q
I
Q
N
O
V
I
/ V
O
I
PK
V
O
/ T
V
I
(Min)
I
O
= 5.0mA
8.0V
1.0mA
10Hz
f
V
I
I
O
15V
40mA
100kHz (Note 3)
V
I
15V
47
40
62
150
-0.65
6.7
7
7.0V
1.0mA
V
I
I
O
V
I
I
O
15V
40mA (Note 2)
15V
100mA
18
20
3
75
60
5
1.0
0.1
V
dB
mA
mV/
o
C
V
mV
mV
mA
mA
Conditions
Min
4.8
4.75
Typ
5
Max
5.2
5.25
Unit
V
f=120Hz, 8.0V
Note 2: Power Dissipation
0.6W
Note 3: Recommended minimum load capacitance of 0.01 F to limit high frequency noise.
Date: 8/3/06 Rev H
SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
3
electrical characteristics (continued)
SP78L12 electrical characteristics
Limits in standard typeface are for T
J
=25
o
C
,
Bold typeface applies over 0
o
C
to 125
o
C,
I
O
=40 mA, C
I
=0.33 F,
C
O
=0.1 F, V
I
=18V, unless otherwise specified.
Parameter
Output Voltage
Symbol
V
O
15V
1.0mA
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Ripple Rejection
Peak Output Current
Average Temperature Coefficient of
Output Voltage
Minimum Value of Input Voltage
Required to Maintain Line Regula-
tion
V
RLINE
V
RLOAD
I
Q
I
Q
N
O
V
I
/ V
O
I
PK
V
O
/ T
V
I
(Min)
15V
1.0mA
10Hz
f
V
I
I
O
18V
40mA
100kHz (Note 3)
V
I
18V
40
80
54
150
I
O
= 5.0mA
-1.0
13.7
15V
1.0mA
V
I
I
O
V
I
I
O
18V
40mA (Note 2)
18V
100mA
18
20
3
75
90
5
1.5
0.1
V
dB
mA
mV/
o
C
V
mV
mV
mA
mA
Conditions
Min
11.5
11.4
Typ
12
Max
12.5
12.6
Unit
V
f=120Hz, 15V
Note 2: Power Dissipation 0.6W
Note 3: Recommended minimum load capacitance of 0.01 F to limit high frequency noise.
Date: 8/3/06 Rev H
SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
Typical Performance characteristics
Vin-Vout Input/output Differential Voltage (V)
2.0
.8
.6
.
I
O
=0mA
I
O
=00mA
Output Voltage (V)
SP78L0
V
OUT
=V
o
T
J
=2 C
Io=0mA
Io=mA
Io=00mA
3
2
.0
0.8
0.6
0.
0.2
I
O
=mA
2
SP78L0
V=%*V
O
0
0
2
6
8
0
0.0
-0
-20
0
20
0
60
o
80
00
20
Input
voltage (V)
V
I
input
Voltage (V)
Junction Temperature ( C)
Figure . Dropout Characteristics
Figure . Dropout Voltage vs. Junction Temperature
2.
2.8
3.0
Quiescent Curren
t
(mA)
Input Bias Current (mA)
2.7
2.6
2.
2.
2.3
2.2
2.
2.0
.
.0
SP78L0
V
OUT
=.0V
I
O
=0mA
T
J
=2 C
o
SP78L0
V
IN
=0V
I
O
=mA
-20
0
20
0
60
o
0.
-0
80
00
20
0.0
0
2
6
8
0
2
6
8
20
Junction Temperature ( C)
Input Voltage (V)
Figure 6. Quiescent Current vs. Junction Temperature
Figure 7. Input Bias Current vs. Input Voltage
Date: 8/3/06 Rev H
SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
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