Diodes AS78LXX User Manual
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Description
Features
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Diodes Incorporated
S78LXX
100mA POSITIVE VOLTAGE REGULATOR
The AS78LXX series are three terminal positive regulators designed
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 100mA.
The AS78LXX series are available in TO-92 (bulk or ammo packing),
SOT-89 and SOIC-8 packages.
DATA SHEET
Pin Assignments
Z Package Z Package R Package
(TO-92(Bulk Packing)) (TO-92(Ammo Packing))
Output Current up to 100mA
Fixed Output Voltages of 5V, 12V and 15V
Output Voltage Accuracy of ±5% over the Full Temperature
Range
Internal Short Circuit Current Limiting
Internal Thermal Overload Protection
No External Components
Output Transistor Safe-area Protection
Applications
Consumer Electronics
Microprocessor Power Supply
Mother Board
(SOT-89 Option 1)
INPUT
INPUT
3
GND
2
3
GND
2
GND
1
OUTPUT
1
OUTPUT
R Package M Package
(SOT-89 Option 2) (SOIC-8)
INPUT
3
OUTPUT
1
2
GND
2
1
GND
OUTPUT
GND
GND
NC
3
4
3
INPUT
2
GND
1
OUTPUT
8
INPUT
7
GND
6
GND
NC
5
AS78LXX
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Typical Applications Circuit
A (B)
A for 3-pin B for 8-pin
DATA SHEET
Functional Block Diagram
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S78LXX
A (B)
A for 3-pin B for 8-pin
AS78LXX
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Absolute Maximum Ratings (Note 1)
Symbol Parameter
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Rating
S78LXX
Unit
Input Voltage 36
Operating Junction Temperature 150
Lead Temperature (Soldering, 10sec) 260
Power Dissipation 750
Storage Temperature Range -65 to 150
Thermal Resistance TO-92 180
T
T
VIN
T
J
LEAD
P
D
STG
JA
ESD ESD (Human Body Model) 2000
DATA SHEET
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 Maximum Ratings” for extended periods may affect device reliability.
ESD
ESD (Machine Model) 200
Recommended Operating Conditions
Symbol Parameter Min Max Unit
V
ºC
ºC
mW
ºC
ºC/W
V
V
VIN Input Voltage
T
J
AS78LXX
Document number: DSxxxxx Rev. 3 - 1
AS78L05
AS78L12
AS78L15
Operating Junction Temperature Range
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30
36
36
V
-40 125 ºC
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S78LXX
Electrical Characteristics
AS78L05 (@ V
specified.)
=10V, I
IN
=40mA, CIN=0.33µF, C
OUT
=0.1µF, T
OUT
=25ºC, Bold typeface applies over -40
J
Symbol Parameter Conditions Min Typ Max Unit
4.8 5.0 5.2
V
V
OUT
RLINE
Output Voltage
7V≤VIN≤20V,
1mA≤I
≤100mA, PD≤0.75W
OUT
4.75 5.25
Line Regulation 7V≤VIN≤20V 8 150 mV
o
C≤TJ≤125oC, unless otherwise
V
DATA SHEET
V
RLOAD
△I
I
Q
Q
Load Regulation 1mA≤I
≤100mA 10 60 mV
OUT
Quiescent Current 3 5.5 mA
≤20V
8V≤V
IN
Quiescent Current Change
1mA≤I
≤40mA
OUT
PSRR Ripple Rejection f=120Hz, 8V≤VIN≤18V 47 62 dB
I
=40mA 1.7
OUT
I
=100mA 1.8
OUT
I
=5mA
OUT
△V
(△V
V
DROP
N
O
/△T
OUT
OUT/VOUT
Dropout Voltage
Output Noise Voltage 10Hz≤f≤100kHz (Note 2) 40 µV
Output Voltage Temperature
)/
Coefficient
△T
TO-92 40
θ
JC
Thermal Resistance
SOIC-8 62
Note 2: 0.01µF minimum load capacitance is recommended to limit high frequency noise.
1.5
mA
0.1
0.42 mV/
84 ppm/
ºC/W SOT-89 28.3
V
o
C
o
C
AS78LXX
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S78LXX
Electrical Characteristics (Cont.)
AS78L05C (@ V
specified.)
=10V, I
IN
=40mA, CIN=0.33µF, C
OUT
=0.1µF, T
OUT
=25ºC, Bold typeface applies over -40
J
Symbol Parameter Conditions Min Typ Max Unit
o
C≤TJ≤125oC, unless otherwise
V
V
RLINE
V
RLOAD
△I
OUT
I
Q
Q
Output Voltage 5.0 5.1 V
Line Regulation 7V≤VIN≤20V 8 150 mV
Load Regulation 1mA≤I
≤100mA 10 60 mV
OUT
Quiescent Current 3 5.5 mA
8V≤V
≤20V
IN
Quiescent Current Change
1mA≤I
≤40mA
OUT
PSRR Ripple Rejection f=120Hz, 8V≤VIN≤18V 47 62 dB
DATA SHEET
=40mA 1.7
I
OUT
I
=100mA 1.8
OUT
I
=5mA
OUT
TO-92 40
SOIC-8 62
△V
(△V
V
DROP
N
O
/△T
OUT
OUT/VOUT
Dropout Voltage
Output Noise Voltage 10Hz≤f≤100kHz (Note 2) 40 µV
Output Voltage Temperature
)/
Coefficient
△T
θ
JC
Thermal Resistance
Note 2: 0.01µF minimum load capacitance is recommended to limit high frequency noise.
1.5
mA
0.1
0.42 mV/
84 ppm/
ºC/W SOT-89 28.3
V
o
C
o
C
AS78LXX
Document number: DSxxxxx Rev. 3 - 1
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S78LXX
Electrical Characteristics (Cont.)
AS78L12 (@ V
specified.)
=19V, I
IN
=40mA, CIN=0.33µF, C
OUT
=0.1µF, T
OUT
=25ºC, Bold typeface applies over -40
J
Symbol Parameter Conditions Min Typ Max Unit
11.5 12.0 12.5
V
V
OUT
RLINE
Output Voltage
14.5V≤VIN≤27V,
1mA≤I
≤100mA, PD≤0.75W
OUT
11.4 12.6
Line Regulation 14.5V≤VIN≤27V 20 250 mV
o
C≤TJ≤125oC, unless otherwise
V
DATA SHEET
V
RLOAD
△I
I
Q
Q
Load Regulation 1mA≤I
≤100mA 20 100 mV
OUT
Quiescent Current 3 6 mA
16V≤V
≤27V
IN
Quiescent Current Change
1mA≤I
≤40mA
OUT
PSRR Ripple Rejection f=120Hz, 15V≤VIN≤25V 37 42 dB
I
=40mA 1.7
OUT
I
=100mA 1.8
OUT
I
=5mA
OUT
△V
(△V
V
DROP
N
O
/△T
OUT
OUT/VOUT
Dropout Voltage
Output Noise Voltage 10Hz≤f≤100kHz (Note 2) 80 µV
Output Voltage Temperature
)/
Coefficient
△T
TO-92 40
θ
JC
Thermal Resistance
SOIC-8 62
Note 2: 0.01µF minimum load capacitance is recommended to limit high frequency noise.
1.5
mA
0.1
1 mV/
84 ppm/
ºC/W SOT-89 28.3
V
o
C
o
C
AS78LXX
Document number: DSxxxxx Rev. 3 - 1
6 of 17
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August 2013
© Diodes Incorporated
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