r solid state electronic equipment. When used as a Zener
diode/resistor combination replacement, the S
P78LXX usually results an effective output impedance improvement of
two orders of magnitude, and lower quiescent current.
With adequate heat sinking the S
P78LXX can deliver 100 mA output current. Current limiting is included to limit the pea k
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 S
P78LXX are available in the plastic TO-92, NSOIC-8, SOT-223 and SOT-89 packages.
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
Applications
High Efficiency Linear Regulator
Post Regulation for Switching Supply
Microprocessor Power Supply
Mother Board I/O Power Supply
NSOIC-8
Figure . Package Types of the SP78LXX
TO-2
SOT-223
SOT-8
SOT-8 Package
OUTPUT
GND
2
3
1
INPUT
GND

SP78LXX
Solved by
TM
100mA 3-Terminal Positive Voltage Regulator 2
Date: 8/3/06 Rev H SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
Figure 2. Pin Configuration of the SP78LXX (Top View)
N Package
(NSOIC-8)

OUTPUT
GND
GND
N/C
8 INPUT
7 GND
6 GND
 N/C

2
3

N
 Package
(TO-2)
M
3 Package
(SOT-223)
INPUT
GND
OUTPUT
GND
1
2
3
M
 Package
OUTPUT
GND
(SOT-8)
2
3
1

Connect pin  to pin 2 or leave
electrically isolated
pin 
INPUT
GND

INPUT
GND
OUTPUT
1
2
3
Pin configuration
Figure 3. Functional Block Diagram of the SP78LXX
OUTPUT
INPUT
GND
1
2, 4 (2, 3, 6, 7)
3 (8)
Functional Block Diagram
A(B)
A for 3-pin
B for 8-pin 3
Date: 8/3/06 Rev H SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
Parameter
Symbol
Value
Unit
Input Voltage
V
CC
20
V
Operating Junction Temperature Range
T
J
0 to125
o
C
Lead Temperature (Soldering, 10sec)
T
LEAD
265
o
C
Power Dissipation (T
A
=25
o
C)
P
D
TO-92
0.65
W
NSOIC
0.6
SOT-223
0.7
SOT-89
0.65
Storage Temperature Range
T
STG
-65 to 150
o
C
ESD (Machine Model)
300
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.
Parameter
Symbol
Min
Max
Unit
Operating Junction Temperature Range
T
J
0
125
o
C
Recommended Operating conditions
Absolute Maximum Ratings (note 1)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
4.8
5
5.2
V
7.0V
V
I
15V
1.0mA
I
O
40mA (Note 2)
4.75
5.25
Line Regulation
V
RLINE
7.0V
V
I
15V
18
75
mV
Load Regulation
V
RLOAD
1.0mA
I
O
100mA
20
60
mV
Quiescent Current
I
Q
3
5
mA
Quiescent Current Change
I
Q
8.0V
V
I
15V
1.0
mA
1.0mA
I
O
40mA
0.1
Output Noise Voltage
N
O
10Hz
f
100kHz (Note 3)
40
V
Ripple Rejection
V
I
/ V
O
f=120Hz, 8.0V
V
I
15V
47
62
dB
Peak Output Current
I
PK
150
mA
Average Temperature Coefficient of
Output Voltage
V
O
/ T
I
O
= 5.0mA
-0.65
mV/
o
C
Minimum Value of Input Voltage
Required to Maintain Line Regula-
tion
V
I
(Min)
6.7
7
V
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.
Note 2: Power Dissipation 0.6W
Note 3: Recommended minimum load capacitance of 0.01 F to limit high frequency noise.
SP78L05 electrical characteristics
electrical characteristics 
Date: 8/3/06 Rev H SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
SP78L12 electrical characteristics
Parameter
Symbol
Conditions
Min
Typ Max
Unit
Output Voltage
V
O
11.5
12
12.5
V
15V V
I
18V
1.0mA I
O
40mA (Note 2)
11.4
12.6
Line Regulation
V
RLINE
15V V
I
18V
18
75
mV
Load Regulation
V
RLOAD
1.0mA I
O
100mA
20
90
mV
Quiescent Current
I
Q
3
5
mA
Quiescent Current Change
I
Q
15V V
I
18V
1.5
mA
1.0mA I
O
40mA
0.1
Output Noise Voltage
N
O
10Hz f 100kHz (Note 3)
80
V
Ripple Rejection
V
I
/ V
O
f=120Hz, 15V V
I
18V
40
54
dB
Peak Output Current
I
PK
150
mA
Average Temperature Coefficient of
Output Voltage
V
O
/ T I
O
= 5.0mA
-1.0
mV/
o
C
Minimum Value of Input Voltage
Required to Maintain Line Regula-
tion
V
I
(Min)
13.7

V
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.
Note 2: Power Dissipation 0.6W
Note 3: Recommended minimum load capacitance of 0.01 F to limit high frequency noise.
electrical characteristics (continued) 
Date: 8/3/06 Rev H SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
Typical Performance characteristics
Figure . Dropout Characteristics
Figure . Dropout Voltage vs. Junction Temperature
Figure 7. Input Bias Current vs. Input Voltage
Figure 6. Quiescent Current vs. Junction Temperature
-0
-20
0
20
0
60
80
00
20
0.0
0.
0.2

0.6
0.8
.0
 2
2.0
.8
.6
.
I
O
=mA
I
O
=0mA
I
O
=00mA
V







i
n
-
V
o
u
t

I







n
p
u
t
/







o
u
t
p
u
t

D
i
f
f
e
r
e
n
t







i
a
l
V







o
l
t





age

(
V
)
Junction Temperature (
o
C)
S
P78L0
V=%*V
O
0
2

6
8
0
0

2
3


O




u
t




p
u




t

V
o
l




t
a




g
e

(




V
)
V
I
input voltage (V)
S
P78L0
V
OUT
=V
T
J
=2
o
C
Io=00mA
Io=0mA
Io=mA
Input Voltage (V)
-0
-20
0
20
0
60
80
00
20
2.2
2.3
2.
2.
2.6
2.
8
2.7

2.
Q




u
i
e
s




c
e
n
t

C
u
r
r





e
nt
(
m
A
)
Junction Temperature (
o
C)
S
P78L0
V
IN
=0V
I
O
=mA
0
2

6
8
0
2

6
8
20
0.0
0.
.0
.
2.0
2.
3.0
S
P78L0
V
OUT
=.0V
I
O
=0mA
T
J
=2
o
C
I






n
p
u
t

B
i
a
s

C
u
r
r
e
n
t

(
m
A
)
Input Voltage (V) 6
Date: 8/3/06 Rev H SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
Typical Performance characteristics (continued)
Figure . Line Transient Response
0
2
0
7
00
2
0
0.

R
JA
=20
o
C/W
P
D
(MAX) to2
o
C=0.6W
No Heatsink
P
o
w
e
r
D
i
s
s
i
p
a
t
i
o
n
(
W
)
Ambient Temperature(
o
C)
Figure 0. Load Transient Response
Figure 8. Maximum Power Dissipation vs.
Ambient Temperature (NSOIC-8 Package)
Typical Application
Figure . Typical Application of the SP78LXX
Note 4: Bypass capacitors are recommended for optimum stability and transient response and should be located
as close as possible to the regulator.
SP78L0
+
+
0.33 F
(Note )
0. F
(Note )
V
IN
V
OUT

2
3 7
Date: 8/3/06 Rev H SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
Mechanical Dimensions
TO-92
Unit: mm(inch)
2.0(0.06)
2.60(0.0)
0.380(0.0)
0.0(0.022)
.600(0.063)
MAX


.

0
0
(
0
.



)


.

0
0
(
0
.

7

)
.270(0.00)
TYP
3
.
3
0
0
(0
.

3
0
)
3
.
7
0
0
(0
.


6
)

.
3
0
0
(
0
.

6

)

.
7
0
0
(
0
.

8

)
.00(0.03)
.00(0.0)
.00(0.73)
.700(0.8)
3.30(0.3)
MIN
0.360(0.0)
0.0(0.020)
0.000(0.000)
0.380(0.0)
PAckAge: 3 Pin TO-92 8
Date: 8/3/06 Rev H SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006 Sipex Corporation
PAckAge: 8 Pin nSOic
Mechanical Dimensions (continued)
nSOic-8
Unit: mm(inch)
0
8


R0.0(0.006)
R
0
.


0
(
0
.
0
0
6
)
.000(0.03)
0.330(0.03)
0.0(0.020)
.800(0.8)
.000(0.7)
.30(0.03)
.70(0.06)
0.00(0.00)
0.300(0.02)
0.00(0.03)
0.800(0.03)
0.200(0.008)
3.800(0.0)
.000(0.7)
7
7
20:
D
.270(0.00)
TYP
0.0(0.007)
0.20(0.00)
8
D
.800(0.228)
6.200(0.2)
0.67(0.027)
0.72(0.02)
0.320(0.03)
8 
Date: 8/3/06 Rev H SP78LXX 00mA 3-Terminal Positive Voltage Regulator
© 2006