an
en
ue
on
tin
isc
ce
/D
Part No.
Publication date: October 2008
AN78L12
Package Code No.
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
Pl
ea
int
Ma
M
Di ain
sc te
on na
tin nc
ue e/
d
DATA SHEET
SSIP003-P-0000S
(Exclusive use for AN78Lxx)
SFF00110BEB
1
AN78L12
Contents
Overview ……………………………………………………………………………………………………………. 3
Features …………………………………………………………………………………………………………….. 3
Applications ………………………………………………………………………………………………………… 3
Package ……………………………………………………………………………………………………………. 3
M
Di ain
sc te
on na
tin nc
ue e/
d
Type …………………………………...……………………………………………………………………………. 3
Block Diagram ………………...……………………………………………………………………………………. 4
Pin Descriptions ……………………………………………………………………………………………………. 5
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
Absolute Maximum Ratings ………………………………………………………………………………………. 6
Electrical Characteristics …………………………………………………………………………………………. 7
Electrical Characteristics (Reference values for design) ………………………………………………………. 8
Technical Data …………………………………………………………………………………………………….. 9
Pl
ea
Ma
int
en
an
ce
/D
isc
on
tin
ue
Package Dimensions ………………………………………………………………………………………………. 10
SFF00110BEB
2
AN78L12
AN78L12
3-pin positive output voltage regulator (100 mA type)
Overview
Features
y No external components
y Output voltage: 12 V
y Built-in overcurrent limit circuit
y Built-in thermal overload protection circuit
Applications
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
M
Di ain
sc te
on na
tin nc
ue e/
d
The AN78Lxx series are 3-pin, fixed positive output type monolithic voltage regulators.
Stabilized fixed output voltage is obtained from unstable DC input voltage without using any external components.
12 types of fixed output voltage are available; 4 V, 5 V, 6 V, 7 V, 8 V, 9 V, 10 V, 12 V, 15 V, 18 V, 20 V and 24 V.
They can be used widely in power circuits with current capacity of up to 100 mA.
The AN78L12 is the 12 V output voltage type in these series.
y 3-pin positive output voltage regulator (100 mA type)
Package
y 3-pin plastic shrink single inline package (SSIP type)
Type
Pl
ea
Ma
int
en
an
ce
/D
isc
on
tin
ue
y Silicon monolithic bipolar IC
SFF00110BEB
3
int
Ma
an
en
1
CIN
CIN : 0.33 μF
COUT : 0.1 μF
R1 : 4 kΩ
R2 : 8 kΩ
R2
+
–
3
Common
Pl
ea
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
ue
on
tin
isc
ce
/D
Input
Voltage Reference
Starter
M
Di ain
sc te
on na
tin nc
ue e/
d
AN78L12
Block Diagram
Current Source
Pass Tr
Current
Limiter
Error Amp.
SFF00110BEB
RSC
Thermal
Protection
R1
2
Output
COUT
4
Input
Output
GND
Pl
ea
Pin name
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
ue
Common
on
tin
3
isc
Output
ce
/D
2
an
Input
en
1
int
Pin No.
Ma
M
Di ain
sc te
on na
tin nc
ue e/
d
AN78L12
Pin Descriptions
Type
Description
Input supplies power to the internal circuitry
Regulated power output
Ground
SFF00110BEB
5
AN78L12
Absolute Maximum Ratings
A
No.
Parameter
Symbol
Rating
Unit
Note
Input voltage
VIN
35
V
*1
2
Supply current
ICC
200
mA
*2
3
Power dissipation
PD
368
mW
*3
4
Operating ambient temperature
Topr
−30 to + 80
°C
*4
5
Storage temperature
Tstg
−55 to +150
°C
*4
M
Di ain
sc te
on na
tin nc
ue e/
d
1
Pl
ea
Ma
int
en
an
ce
/D
isc
on
tin
ue
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
Note) *1: The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
*2: Since current limiting circuit is built in, current value never exceeds the limit.
*3: The power dissipation shown is the value at Ta = 80°C.
When using this IC, refer to the y PD – Ta diagram in the Technical Data and use under the condition not exceeding the allowable value.
When Tj exceeds 150°C, the internal circuit cuts off the output.
*4: Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25°C.
SFF00110BEB
6
AN78L12
Electrical Characteristics
Note) Unless otherwise specified, Ta = 25°C±2°C, VIN = 19 V, IOUT = 40 mA, CIN = 0.33 μF and COUT = 0.1 μF, Tj = 0°C to 125°C
B
No.
Parameter
Symbol
Conditions
Limits
Min
Typ
Max
Unit
Note
Output voltage
VOUT
Tj = 25°C
11.5
12.0
12.5
V
*1
2
Output voltage tolerance
VOUT
VIN = 14.5 V to 27 V,
IOUT = 1 mA to 70 mA
11.4
—
12.6
V
*1
mV
*1
mV
*1
M
Di ain
sc te
on na
tin nc
ue e/
d
1
Line regulation
REGIN
4
Load regulation
REGL
5
Bias current
6
Bias current fluctuation to input
ΔIBias(IN)
7
Bias current fluctuation to load
ΔIBias(L)
8
Ripple rejection ratio
IBias
RR
VIN = 14.5 V to 27 V, Tj = 25°C
—
120
250
VIN = 15 V to 27 V, Tj = 25°C
—
100
200
IOUT = 1 mA to 100 mA, Tj = 25°C
—
20
100
IOUT = 1 mA to 40 mA, Tj = 25°C
—
10
50
Tj = 25°C
—
2.0
3.5
mA
*1
VIN = 15 V to 27 V, Tj = 25°C
—
—
1.0
mA
*1
IOUT = 1 mA to 40 mA, Tj = 25°C
—
—
0.1
mA
*1
VIN = 15 V to 25 V,
IOUT = 40 mA, f = 120 Hz
40
50
—
dB
—
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
3
Pl
ea
Ma
int
en
an
ce
/D
isc
on
tin
ue
Note) *1: The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic
value drift due to the chip junction temperature rise can be ignored.
SFF00110BEB
7
AN78L12
Electrical Characteristics (Reference values for design)
Note) Unless otherwise specified, Ta = 25°C±2°C, VIN = 19 V, IOUT = 40 mA, CIN = 0.33 μF and COUT = 0.1 μF, Tj = 0°C to 125°C
The characteristics listed below are reference values for design of the IC and are not guaranteed by inspection.
If a problem does occur related to these characteristics, Panasonic will respond in good faith to user concerns.
B
No.
1
Parameter
Symbol
Output noise voltage
Conditions
Vno
f = 10 Hz to 100 kHz
Reference values
Unit
Note
—
μV
—
Min
Typ
Max
—
80
Minimum input/output
voltage difference
VDIF(min)
Tj = 25°C
—
1.7
—
V
*1
3
Output short-circuit current
IO(Short)
Tj = 25°C
—
140
—
mA
*1
4
Output voltage
temperature coefficient
ΔVOUT
———
Ta
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
M
Di ain
sc te
on na
tin nc
ue e/
d
2
IOUT = 5 mA, Tj = 0°C to 125°C
—
– 1.0
—
mV/°C
—
Pl
ea
Ma
int
en
an
ce
/D
isc
on
tin
ue
Note) *1: The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic
value drift due to the chip junction temperature rise can be ignored.
SFF00110BEB
8
an
en
ue
on
tin
isc
ce
/D
Pl
ea
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
int
Ma
M
Di ain
sc te
on na
tin nc
ue e/
d
AN78L12
Technical Data
y PD — Ta diagram
SFF00110BEB
9
an
en
ue
on
tin
isc
ce
/D
Pl
ea
d
pla inc
ne lud
se
pla m d m es
v
ne ain ain foll
htt isit
d te t o
p:/ fo
/w llo dis disc nan enan wing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
o
/
n.
int
Ma
M
Di ain
sc te
on na
tin nc
ue e/
d
AN78L12
Package Dimensions (Unit: mm)
y SSIP003-P-0000S (Exclusive use for AN78Lxx)
SFF00110BEB
10
Request for your special attention and precautions in using the technical information and
semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and
regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit examples
of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any
other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any
other company which may arise as a result of the use of technical information described in this book.
M
Di ain
sc te
on na
tin nc
ue e/
d
(3) The products described in this book are intended to be used for standard applications or general electronic equipment (such as office
equipment, communications equipment, measuring instruments and household appliances).
Consult our sales staff in advance for information on the following applications:
– Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support
systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body.
– Any applications other than the standard applications intended.
d
pla inc
ne lud
se
pla m d m es
ne ain ain foll
htt visit
d d te te ow
p:/ fo
d
/w llo is isc nan nan ing
ww wi co on ce c fo
.se ng ntin tin ty e ty ur
mi UR ue ued pe pe Pro
co L a d t ty
du
n.p bo yp pe
ct
life
an ut e
d
as lat
cy
on es
cle
ic. t in
sta
co fo
ge
.jp rm
.
/en at
i
/ on
.
(4) The products and product specifications described in this book are subject to change without notice for modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product
Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS,
thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which
damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.
(7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company.
Pl
ea
Ma
int
en
an
ce
/D
isc
on
tin
ue
20080805
