Advanced
Monolithic
Systems
FEATURES
•
5.0V, 6.2V and 8.0V Output Voltage Available*
•
Output Voltage Tolerance of
±
5% Over Temperature
•
Output Current in excess of 100mA
•
Internal Thermal Overload Protection
•
Overvoltage Protection
•
Short Circuit protection
•
TO-92, SO-8 and SOT-89 Packages Available
AMS78LXX
100mA VOLTAGE REGULATOR
RoHS compliant
APPLICATIONS
•
Battery Powered Systems
•
Portable Consumer Equipment
•
Cordless Telephones
•
Portable (Notebook) Computers
•
Portable Instrumentation
•
Radio Control Systems
•
Logic Systems
GENERAL DESCRIPTION
The AMS78LXX series consists of positive fixed voltage regulators ideally suited for use in battery-powered systems. These
devices feature very low quiescent current of 1mA or less when supplying 10mA loads. This unique characteristic and the low
input -output differential of less than 1V required for proper regulation, make the AMS78LXX ideal to use for standby power
systems and portable equipment.
The AMS78LXX series also includes internal current limiting, over voltage protection, thermal shutdown, and is able to
withstand temporary power-up with mirror-image insertion.
The AMS78LXX series is offered in the 3-pin TO-92 package, 8-pin plastic SOIC and SOT-89 packages.
ORDERING INFORMATION
OUTPUT
PACKAGE TYPE
SOT-89
AMS78L05L
AMS78L62L
AMS78L08L
OPER. TEMP
RANGE
-40ºC to +85 ºC
-40ºC to +85 ºC
-40ºC to +85 ºC
TO-92
8 LEAD SOIC
VOLTAGE*
5.0V
AMS78L05N
AMS78L05S
6.2V
AMS78L62N
AMS78L62S
8.0V
AMS78L08N
AMS78L08S
* For other fixed voltages consult factory.
PIN CONNECTION
TO-92
Plastic Package (N)
OUTPUT
INPUT
8L SOIC
SO-Package (S)
OUTPUT 1
GROUND 2
GROUND 3
8 INPUT
7 GROUND
6 GROUND
5 N/C
SOT-89 Package
(L)
GND
1
INPUT
2
GND
3
OUTPUT
N/C 4
Bottom View
Top View
Front View
www.advanced-monolithic.com
updated April 24, 2009
AMS78LXX
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Overvoltage Protection
Power Dissipation (Note 4)
Storage Temperature
ESD
24Vto 40V
Internally Limited
-65°C to +150°C
1000V
OPERATING RATINGS
(Note 1)
Maximum Operating Input Voltage
Operating Junction Temperature
Lead Temperature (Soldering 25 sec)
4V to 22V
0°C to +125°C
265°C
ELECTRICAL CHARACTERISTICS
AMS78L05
Electrical Characteristics at V
IN
=10V, I
O
=10mA, T
J
=25°C, C
1
=0.33µF, C
O
= 10µF unless otherwise specified.
PARAMETER
Output Voltage
7V
≤V
IN
≤20V,
I
O
=100 mA
-40°C
≤T
J
≤125°C
Line Regulation
7V
≤V
IN
≤
20V
8V
≤V
IN
≤
20V
Load Regulation
1mA
≤I
O
≤
100 mA
1mA
≤I
O
≤
40 mA
Quiescent Current
Output Noise Voltage
Peak Output Current
Average Output Voltage Tempco
Ripple Rejection
I
O
= 5 mA
f
O
= 120Hz
8V
≤V
IN
≤
16V
Minimum Value of Input Voltage
Required to Maintain Line Regulation
5.6
6.0
V
47
10Hz-100kHz
18
10
20
5
0.6
40
200
-0.65
62
75
54
60
30
1.0
mA
µV
mA
mV/°C
dB
mV
mV
CONDITIONS
(Note 2)
Min.
4.80
4.75
Typ.
5.0
Max.
5.2
5.25
Units
V
V
AMS78L62
Electrical Characteristics at V
IN
=12V, I
O
=10mA, T
J
=25°C, C
1
=0.33µF, C
O
= 10µF unless otherwise specified.
PARAMETER
Output Voltage
8.5V
≤V
IN
≤20V,
I
O
=100 mA
-40°C
≤T
J
≤125°C
Line Regulation
8.5V
≤V
IN
≤
20V
9V
≤V
IN
≤
20V
Load Regulation
1mA
≤I
O
≤
100 mA
1mA
≤I
O
≤
40 mA
Quiescent Current
Output Noise Voltage
Peak Output Current
Average Output Voltage Tempco
I
O
= 5 mA
10Hz-100kHz
65
55
13
6
0.6
50
200
-0.75
175
125
80
40
1.0
mA
µV
mA
mV/°C
mV
mV
CONDITIONS
(Note 2)
Min.
5.95
5.9
Typ.
6.2
Max.
6.45
6.5
Units
V
V
www.advanced-monolithic.com
updated April 24, 2009
AMS78LXX
ELECTRICAL CHARACTERISTICS
(Continued)
AMS78L62
Electrical Characteristics at V
IN
=12V, I
O
=10mA, T
J
=25°C, C
1
=0.33µF, C
O
= 10µF unless otherwise specified.
PARAMETER
Ripple Rejection
CONDITIONS
(Note 2)
f
O
= 120Hz
10V
≤V
IN
≤
20V
Min.
40
Typ.
46
6.8
Max.
Units
dB
Minimum Value of Input Voltage
Required to Maintain Line Regulation
7.0
V
AMS78L08
Electrical Characteristics at V
IN
=14V, I
O
=10mA, T
J
=25°C, C
1
=0.33µF, C
O
= 10µF unless otherwise specified.
PARAMETER
Output Voltage
11V
≤V
IN
≤23V,
I
O
=100 mA
-40°C
≤T
J
≤125°C
Line Regulation
11V
≤V
IN
≤
23V
12V
≤V
IN
≤
23V
Load Regulation
1mA
≤I
O
≤
100 mA
1mA
≤I
O
≤
40 mA
Quiescent Current
Output Noise Voltage
Peak Output Current
Average Output Voltage Tempco
Ripple Rejection
I
O
= 5 mA
f
O
= 120Hz
12V
≤V
IN
≤
22V
Minimum Value of Input Voltage
Required to Maintain Line Regulation
9.0
9.5
V
39
10Hz-100kHz
80
70
15
8
0.6
60
200
-0.78
45
175
125
80
40
1.0
mA
µV
mA
mV/°C
dB
mV
mV
CONDITIONS
(Note 2)
Min.
7.60
7.60
Typ.
8.0
Max.
8.40
8.40
Units
V
V
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. For guaranteed performance limits and associated test
conditions, see the Electrical Characteristics tables.
Note 2:
See Circuit in Typical Applications. To ensure constant junction temperature, low duty cycle pulse testing is used.
Note 3:
Limits appearing in
boldface
type apply over the entire junction temperature range for operation. Limits appearing in normal type apply for T
A
= T
J
=
25°C.
Note 4:
The junction-to-ambient thermal resistance are as follows: 195°C/W for the TO-92 (N) package, 160°C/W for the molded plastic SO-8 (S), 150°C/W
for the SOT-89 package.
www.advanced-monolithic.com
updated April 24, 2009
AMS78LXX
TYPICAL PERFORMANCE CHARACTERISTICS
Dropout Voltage
INPUT OUTPUT DIFFERENTIAL (V)
0.6
0.5
0.4
0.3
0.2
0.1
0
0
80
120
40
JUNCTION TEMPERATURE (° C)
I
O
= 100mA
Peak Output Current
600
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
500
T
J
= 25°C
Low Voltage Behavior
6.0
5.0
4.0
3.0
2.0
0
AMS78L05
I
O
= 100mA
400
T
J
= 85°C
300
200
100
0
0
T
J
= -40°C
20
10
INPUT VOLTAGE (V)
30
2.0
3.0
4.0
5.0
6.0
INPUT VOLTAGE (V)
12
10
OUTPUT VOLTAGE (V)
8
6
4
2
0
-2
-20 -10
0 10 20 30 40 50 60
INPUT VOLTAGE (V)
AMS78L05
R
L
=500Ω
INPUT VOLTAGE OUTPUT VOLTAGE
CHANGE (V)
DEVIATION (mV)
~
~
LOAD CURRENT(mA)
3
2
1
0
-1
-2
~
-3
~
OUTPUT VOLTAGE
DEVIATION (mV)
Output at Voltage Extremes
Line Transient Response
V
IN
= V
OUT
= 9V
C
2
= 100
µF
Load Transient Response
40
0
-40
C
2
= 100µF
~
~
150
~
~
3
0
0
15
30
TIME (µs)
45
0
0
15
30
TIME (µs)
45
Quiescent Current
35
QUIESCENT CURRENT (mA)
QUIESCENT CURRENT (mA)
30
25
20
15
10
5
0
-5
-20 -10
0 10 20 30 40 50 60
INPUT VOLTAGE (V)
I
O
= 100mA
5V OUTPUT
Quiescent Current
30
QUIESCENT CURRENT (mA)
25
20
15
10
5
0
0
60
30
90
OUTPUT CURRENT (mA)
V
IN
= 14V
Quiescent Current
25
20
15
10
3
2
1
0
-40
I
O
= 0mA
~
~
I
O
= 50mA
~
~
I
O
= 50mA
0
40
80
120
TEMPERATURE (° C)
www.advanced-monolithic.com
updated April 24, 2009
AMS78LXX
TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
Maximum Power Dissipation (SO-8)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (° C)
POWER DISSIPATION (W)
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
Maximum Power Dissipation (SOT-89)
Maximum Power Dissipation (TO-92)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.4" Lead
Lenght from
PC Board
0.125" Lead Lenght
from PC Board
POWER DISSIPATION (W)
0 10 20 30 40 50 60 70 80 90 100
AMBIENT TEMPERATURE (° C)
POWER DISSIPATION (W)
0 10 20 30 40 50 60 70 80
AMBIENT TEMPERATURE (° C)
TYPICAL APPLICATIONS
Fixed Output Regulator
V
IN
UNREGULATED
INPUT
C1*
0.33µF
AMS78LXX
V
OUT
REGULATED
OUTPUT
C2**
10µF
GND
I
Q
*Required if regulator is located far from power supply filter.
**C2 must be at least 10µF to maintain stability; it can be increased without bound to maintain regulation during transients and it should be
located as close as possible to the regulator. This capacitor must be rated over the same operating temperature range like the regulator.
Current Regulator
INPUT
C1
0.33µF
AMS78LXX
R1
OUTPUT
I
OUT
I
OUT
= (V
OUT
/R1)+I
Q
>I
Q
= 1.5mA over line and load changes
www.advanced-monolithic.com
updated April 24, 2009
京公网安备 11010802033920号
EEWORLD
