Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMS78LXX
Monolithic
100mA VOLTAGE REGULATOR
Systems
FEATURES
APPLICATIONS
·
·
5.0V, 6.2V and 8.0V Output Voltage Available*
·
·
Battery Powered Systems
·
·
Output Voltage Tolerance of
±
±
5% Over Temperature
·
·
Portable Consumer Equipment
·
·
Output Current in excess of 100mA
·
·
Cordless Telephones
·
·
Internal Thermal Overload Protection
·
·
Portable (Notebook) Computers
·
·
Overvoltage Protection
·
·
Portable Instrumentation
·
·
Short Circuit protection
·
·
Radio Control Systems
·
·
TO-92, SO-8 and SOT-89 Packages Available
·
·
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
OPER. TEMP
VOLTAGE*
TO-92
8 LEAD SOIC
SOT-89
RANGE
5.0V
AMS78L05N
AMS78L05S
AMS78L05L
IND
6.2V
AMS78L62N
AMS78L62S
AMS78L62L
IND
8.0V
AMS78L08N
AMS78L08S
AMS78L08L
IND
* For other fixed voltages consult factory.
PIN CONNECTION
TO-92
Plastic Package (N)
8L SOIC
SO-Package (S)
SOT-89 Package
(L)
OUTPUT
INPUT
GND
N/C
OUTPUT
N/C
INPUT
GROUND
GROUND
GROUND
GROUND
1
2
8
4
3
7
5
6
1
2
3
OUTPUT
GND
INPUT
Bottom View
Top View
Front View
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS78LXX
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage
24V
Storage Temperature
-65
°
C to +150
°
C
Power Dissipation (Note 4)
Internally Limited
Lead Temperature (Soldering 10 sec)
230
°
C
Operating Junction Temperature
0
°
C to +125
°
C
ESD
1000V
ELECTRICAL CHARACTERISTICS
AMS78L05
Electrical Characteristics at V
IN
=10V, I
O
=10mA, T
J
=25°C, C
1
=0.33
µ
F, C
O
= 10
µ
F unless otherwise specified.
PARAMETER
CONDITIONS
(Note 2)
Min.
Typ.
Max.
Units
Output Voltage
4.80
5.0
5.2
V
7V
V
IN
20V, I
O
=100 mA
-40
°
C
T
J
125
°
C
4.75
5.25
V
7V
V
IN
20V
18
75
Line Regulation
8V
V
IN
20V
10
54
mV
1mA
I
O
100 mA
20
60
Load Regulation
1mA
I
O
40 mA
5
30
mV
Quiescent Current
0.6
1.0
mA
Output Noise Voltage
10Hz-100kHz
40
µ
V
Peak Output Current
200
mA
Average Output Voltage Tempco
I
O
= 5 mA
-0.65
mV/
°
C
Ripple Rejection
f
O
= 120Hz
8V
V
IN
16V
47
62
dB
Minimum Value of Input Voltage
Required to Maintain Line Regulation
5.6
6.0
V
AMS78L62
Electrical Characteristics at V
IN
=12V, I
O
=10mA, T
J
=25°C, C
1
=0.33
µ
F, C
O
= 10
µ
F unless otherwise specified.
PARAMETER
CONDITIONS
(Note 2)
Min.
Typ.
Max.
Units
Output Voltage
5.95
6.2
6.45
V
8.5V
V
IN
20V, I
O
=100 mA
-40
°
C
T
J
125
°
C
5.9
6.5
V
8.5V
V
IN
20V
65
175
Line Regulation
9V
V
IN
20V
55
125
mV
1mA
I
O
100 mA
13
80
Load Regulation
1mA
I
O
40 mA
6
40
mV
Quiescent Current
0.6
1.0
mA
Output Noise Voltage
10Hz-100kHz
50
µ
V
Peak Output Current
200
mA
Average Output Voltage Tempco
I
O
= 5 mA
-0.75
mV/
°
C
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS78LXX
ELECTRICAL CHARACTERISTICS
(Continued)
AMS78L62
Electrical Characteristics at V
IN
=12V, I
O
=10mA, T
J
=25°C, C
1
=0.33
µ
F, C
O
= 10
µ
F unless otherwise specified.
PARAMETER
CONDITIONS
(Note 2)
Min.
Typ.
Max.
Units
Ripple Rejection
f
O
= 120Hz
10V
V
IN
20V
40
46
dB
Minimum Value of Input Voltage
Required to Maintain Line Regulation
6.8
7.0
V
AMS78L08
Electrical Characteristics at V
IN
=14V, I
O
=10mA, T
J
=25°C, C
1
=0.33
µ
F, C
O
= 10
µ
F unless otherwise specified.
PARAMETER
CONDITIONS
(Note 2)
Min.
Typ.
Max.
Units
Output Voltage
7.60
8.0
8.40
V
11V
V
IN
23V, I
O
=100 mA
-40
°
C
T
J
125
°
C
7.60
8.40
V
11V
V
IN
23V
80
175
Line Regulation
12V
V
IN
23V
70
125
mV
1mA
I
O
100 mA
15
80
Load Regulation
1mA
I
O
40 mA
8
40
mV
Quiescent Current
0.6
1.0
mA
Output Noise Voltage
10Hz-100kHz
60
µ
V
Peak Output Current
200
mA
Average Output Voltage Tempco
I
O
= 5 mA
-0.78
mV/
°
C
Ripple Rejection
f
O
= 120Hz
12V
V
IN
22V
39
45
dB
Minimum Value of Input Voltage
Required to Maintain Line Regulation
9.0
9.5
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.
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS78LXX
TYPICAL PERFORMANCE CHARACTERISTICS
Line Transient Response
TIME (
µ
s)
OUTPUT VOLTAGE
DEVIATION (mV)
C
2
= 100
µ
F
0
15
30
45
0
3
-1
0
1
2
3
V
IN
= V
OUT
= 9V
6.0
Low Voltage Behavior
2.0
3.0
4.0
5.0
INPUT VOLTAGE (V)
AMS78L05
2.0
3.0
4.0
5.0
6.0
0
I
O
= 100mA
0
10
20
0
600
400
200
Peak Output Current
30
INPUT VOLTAGE (V)
OUTPUT CURRENT (
m
A)
100
500
300
T
J
= 85°C
T
J
= 25°C
T
J
= -40°C
0
40
80
0
0.6
0.4
0.2
Dropout Voltage
120
JUNCTION TEMPERATURE (° C)
INPUT OUTPUT DIFFERENTIAL (V)
0.1
0.5
0.3
-40
40
80
120
25
10
QUIESCENT CURRENT (mA)
Quiescent Current
TEMPERATURE (° C)
15
2
0
0
0
30
60
0
30
20
10
Quiescent Current
90
OUTPUT CURRENT (mA)
QUIESCENT CURRENT (mA)
5
25
15
-2
2
6
12
-20 -10
0
10
20
30
40
50
60
INPUT VOLTAGE (V)
Output at Voltage Extremes
OUTPUT VOLTAGE (V)
0
4
10
8
AMS78L05
R
L
=500
OUTPUT VOLTAGE (V)
-2
INPUT VOLTAGE
CHANGE (V)
~
~
~
~
~
~
-3
~
~
V
IN
= 14V
20
3
1
Load Transient Response
TIME (
µ
s)
OUTPUT VOLTAGE
DEVIATION (mV)
C
2
= 100
µ
F
0
15
30
45
0
150
-40
0
40
LOAD CURRENT(mA)
~
~
~
~
I
O
= 100mA
I
O
= 50mA
I
O
= 0mA
-5
5
20
10
35
-20 -10
0
10
20
30
40
50
60
INPUT VOLTAGE (V)
Quiescent Current
QUIESCENT CURRENT (
m
A)
0
15
30
25
5V OUTPUT
I
O
= 50mA
I
O
= 100mA
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS78LXX
TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
TYPICAL APPLICATIONS
Fixed Output Regulator
AMS78LXX
V
IN
UNREGULATED
INPUT
V
OUT
REGULATED
OUTPUT
C2**
10
µ
F
C1*
0.33
µ
F
GND
I
Q
*Required if regulator is located far from power supply filter.
**C2 must be at least 10
µ
F 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
I
OUT
= (V
OUT
/R1)+I
Q
>I
Q
= 1.5mA over line and load changes
Maximum Power Dissipation (SOT-89)
AMBIENT TEMPERATURE (° C)
0 10
40
60
80
0
1.2
1.4
1.8
2.2
2.0
1.6
1.0
0.8
0.6
0.4
0.2
POWER DISSIPATION (W)
20 30
50
70
90 100
0.5
1.0
Maximum Power Dissipation (SO-8)
0.1
0.2
0.3
0.4
0.6
0.7
0.8
0.9
AMBIENT TEMPERATURE (° C)
POWER DISSIPATION (W)
10 20 30 40 50 60 70 80 90
0
0
0.5
1.0
Maximum Power Dissipation (TO-92)
0.1
0.2
0.3
0.4
0.6
0.7
0.8
0.9
AMBIENT TEMPERATURE (° C)
POWER DISSIPATION (W)
0.125" Lead Lenght
from PC Board
10 20 30 40 50 60 70 80
0
0
0.4" Lead
Lenght from
PC Board
AMS78LXX
INPUT
OUTPUT
R1
C1
0.33
µ
F
I
OUT
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