SGS Thomson Microelectronics L7824ABV, L7820ACV, L7824ACV, L7820ABV, L7818ACV Datasheet

...
L7800AB/AC
SERIES
PRECISION 1A REGULATORS
November 1999
OUTPUT CURRENT INEXCESSOF1 A
THERMAL OVERLOADPROTECTION
OUTPUT TRANSITIONSOAPROTECTION
2%OUTPUTVOLTAGETOLERANCE
GUARANTEEDINEXTENDED TEMPERATURERANGE
DESCRIPTION
The L7800A series of three-terminal positive regulators is available in TO-220 and D
2
PAK packages and several fixed output voltages, making it useful in a wide range of applications.These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustablevoltages and currents.
TO-220
D
2
PAK
BLOCKDIAGRAM
1/17
CONNECTION DIAGRAM AND ORDERING NUMBERS(top view)
TO-220 D2PAK
THERMALDATA
Symbol Parameter D2PAK TO-220 Unit
R
thj-cas e
R
thj-amb
Thermal Resistance Junction-case Max Thermal Resistance Junction-ambient Max
3
62.5
3
50
o
C/W
o
C/W
Type TO-220 D
2
PAK (*) Output Voltage
L7805AB L7805AC L7806AB L7806AC L7808AB L7808AC L7809AB L7809AC L7812AB L7812AC L7815AB L7815AC L7818AB L7818AC L7820AB L7820AC L7824AB L7824AC
L7805ABV L7805ACV L7806ABV L7806ACV L7808ABV L7808ACV L7809ABV L7809ACV L7812ABV L7812ACV L7815ABV L7815ACV L7818ABV L7818ACV L7820ABV L7820ACV L7824ABV L7824ACV
L7805ABD2T L7805ACD2T L7806ABD2T L7806ACD2T L7808ABD2T L7808ACD2T L7809ABD2T L7809ACD2T L7812ABD2T L7812ACD2T L7815ABD2T L7815ACD2T
5V 5V 6V 6V 8V 8V 9V
9V 12V 12V 15V 15V 18V 18V 24V 24V
(*) AVAILABLE IN TAPE AND REEL WITH ”-TR” SUFFIX
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
i
DC InputVoltage (for VO= 5 to 18V)
(forV
O
= 20,24V)
35 40
V V
I
o
OutputCurrent Internally limited
P
tot
PowerDissipation Internally limited
T
op
OperatingJunction TemperatureRange (for L7800AC)
(for L7800AB)
0to150
-40 to 125
o
C
o
C
T
stg
StorageTemperature Range - 65 to 150
o
C
L7800AB/AC
2/17
APPLICATION CIRCUIT
SCHEMATIC DIAGRAM
L7800AB/AC
3/17
TESTCIRCUITS
Figure3 : RippleRejection.
Figure2 : Load Regulation.Figure1 : DC Parameter
L7800AB/AC
4/17
* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
ELECTRICAL CHARACTERISTICS FOR L7805A
(V
i
= 10V,Io= 1A, Tj= 0 to125oC (L7805AC),
T
j
= -40to 125oC (L7805AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
OutputVoltage Tj=25oC 4.955.1V
V
o
OutputVoltage Io=5 mA to 1 A Po≤ 15W
V
i
= 7.5 to 20 V
4.855.2V
V
o
* LineRegulation Vi= 7.5 to 25 V Io=500mA
V
i
= 8 to12 V
V
i
= 8 to12 V Tj=25oC
V
i
= 7.3 to 20 V Tj=25oC
7
10
2 7
50
5 25 50
mV mV mV mV
V
o
* Load Regulation Io=5 mA to 1 A
I
o
=5 mA to 1.5A Tj=25oC
I
o
=250 to 750 mA
25 30
8
100 100
50
mV mV mV
I
d
QuiescentCurrent Tj=25oC4.36
6
mA
I
d
QuiescentCurrent Change Vi= 8 to25 V Io= 500 mA
V
i
= 7.5 to 20 V Tj=25oC
I
o
=5 mA to 1 A
0.8
0.8
0.5
mA mA mA
SVR Supply VoltageRejection V
i
= 8 to18 V f= 120Hz
I
o
=500 mA
68 dB
V
d
Dropout Voltage Io=1A Tj=25oC2V
e
N
OutputNoise Voltage B = 10Hzto 100KHz Tj=25oC10µV/V
o
R
o
OutputResistance f = 1KHz 17 m
I
sc
ShortCircuitCurrent Vi=35V T
amb
=25oC0.2A
I
scp
ShortCircuitPeack Current Tj=25oC2.2A
V
o
T
OutputVoltageDrift -1.1 mV/oC
L7800AB/AC
5/17
ELECTRICAL CHARACTERISTICS FOR L7806A
(V
i
= 11V,Io= 1A, Tj= 0 to125oC (L7806AC),
T
j
= -40to 125oC (L7806AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
OutputVoltage Tj=25oC5.8866.12V
V
o
OutputVoltage Io=5 mA to 1 A P
o
15 W
V
i
= 8.6 to 21 V
5.76 6 6.24 V
V
o
* LineRegulation Vi= 8.6 to 25 V Io=500mA
V
i
= 9 to13 V
V
i
= 9 to13 V Tj=25oC
V
i
= 8.3 to 21 V Tj=25oC
9
11
3 9
60 60 30 60
mV mV mV mV
V
o
* Load Regulation Io=5 mA to 1 A
I
o
=5 mA to 1.5A Tj=25oC
I
o
=250 to 750 mA
25 30 10
100 100
50
mV mV mV
I
d
QuiescentCurrent Tj=25oC4.36
6
mA
I
d
QuiescentCurrent Change Vi= 9 to25 V Io= 500 mA
V
i
= 8.6 to 21 V Tj=25oC
I
o
=5 mA to 1 A
0.8
0.8
0.5
mA mA mA
SVR Supply VoltageRejection V
i
= 9 to19 V f= 120Hz
I
o
=500 mA
65 dB
V
d
Dropout Voltage Io=1A Tj=25oC2V
e
N
OutputNoise Voltage B = 10Hzto 100KHz Tj=25oC10
µ
V/V
o
R
o
OutputResistance f = 1KHz 17 m
I
sc
ShortCircuitCurrent Vi=35V T
amb
=25oC0.2A
I
scp
ShortCircuitPeack Current Tj=25oC2.2A
V
o
T
OutputVoltageDrift -0.8 mV/oC
* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
L7800AB/AC
6/17
ELECTRICAL CHARACTERISTICS FOR L7808A
(V
i
= 14V,Io= 1A, Tj= 0 to125oC (L7808AC),
T
j
= -40to 125oC (L7808AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
OutputVoltage Tj=25oC7.8488.16V
V
o
OutputVoltage Io=5 mA to 1 A P
o
15 W
V
i
= 10.6to 23 V
7.788.3V
V
o
* LineRegulation Vi= 10.6to 25 V Io=500 mA
V
i
=11to17V
V
i
=11to17V Tj=25oC
V
i
= 10.4to 23 V Tj=25oC
12 15
5
12
80 80 40 80
mV mV mV mV
V
o
* Load Regulation Io=5 mA to 1 A
I
o
=5 mA to 1.5A Tj=25oC
I
o
=250 to 750 mA
25 30 10
100 100
50
mV mV mV
I
d
QuiescentCurrent Tj=25oC4.36
6
mA
I
d
QuiescentCurrent Change Vi=11to25V Io=500mA
V
i
= 10.6to 23 V Tj=25oC
I
o
=5 mA to 1 A
0.8
0.8
0.5
mA mA mA
SVR Supply VoltageRejection V
i
= 11.5to 21.5 V f =120 Hz
I
o
=500 mA
62 dB
V
d
Dropout Voltage Io=1A Tj=25oC2V
e
N
OutputNoise Voltage B = 10Hzto 100KHz Tj=25oC10
µ
V/V
o
R
o
OutputResistance f = 1KHz 18 m
I
sc
ShortCircuitCurrent Vi=35V T
amb
=25oC0.2A
I
scp
ShortCircuitPeack Current Tj=25oC2.2A
V
o
T
OutputVoltageDrift -0.8 mV/oC
* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
L7800AB/AC
7/17
ELECTRICAL CHARACTERISTICS FOR L7809A
(V
i
= 15V,Io= 1A, Tj= 0 to125oC (L7809AC),
T
j
= -40to 125oC (L7809AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
OutputVoltage Tj=25oC8.8299.18V
V
o
OutputVoltage Io=5 mA to 1 A P
o
15 W
V
i
= 10.6to 23 V
8.65 9 9.35 V
V
o
* LineRegulation Vi= 10.6to 25 V Io=500 mA
V
i
=11to17V
V
i
=11to17V Tj=25oC
V
i
= 10.4to 23 V Tj=25oC
12 15
5
12
90 90 45 90
mV mV mV mV
V
o
* Load Regulation Io=5 mA to 1 A
I
o
=5 mA to 1.5A Tj=25oC
I
o
=250 to 750 mA
25 30 10
100 100
50
mV mV mV
I
d
QuiescentCurrent Tj=25oC4.36
6
mA
I
d
QuiescentCurrent Change Vi=11to25V Io=500mA
V
i
= 10.6to 23 V Tj=25oC
I
o
=5 mA to 1 A
0.8
0.8
0.5
mA mA mA
SVR Supply VoltageRejection V
i
= 11.5to 21.5 V f =120 Hz
I
o
=500 mA
61 dB
V
d
Dropout Voltage Io=1A Tj=25oC2V
e
N
OutputNoise Voltage B = 10Hzto 100KHz Tj=25oC10
µ
V/V
o
R
o
OutputResistance f = 1KHz 18 m
I
sc
ShortCircuitCurrent Vi=35V T
amb
=25oC0.2A
I
scp
ShortCircuitPeack Current Tj=25oC2.2A
V
o
T
OutputVoltageDrift -0.8 mV/oC
* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
L7800AB/AC
8/17
ELECTRICAL CHARACTERISTICS FOR L7812A
(V
i
= 19V,Io= 1A, Tj= 0 to125oC (L7812AC),
T
j
= -40to 125oC (L7812AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
OutputVoltage Tj=25oC 11.75 12 12.25 V
V
o
OutputVoltage Io=5 mA to 1 A P
o
15 W
V
i
= 14.8to 27 V
11.5 12 12.5 V
V
o
* LineRegulation Vi= 14.8to 30 V Io=500 mA
V
i
=16to22V
V
i
=16to22V Tj=25oC
V
i
= 14.5to 27 V Tj=25oC
13 16
6
13
120 120
60
120
mV mV mV mV
V
o
* Load Regulation Io=5 mA to 1 A
I
o
=5 mA to 1.5A Tj=25oC
I
o
=250 to 750 mA
25 30 10
100 100
50
mV mV mV
I
d
QuiescentCurrent Tj=25oC4.46
6
mA
I
d
QuiescentCurrent Change Vi=15to30V Io=500mA
V
i
= 14.8to 27 V Tj=25oC
I
o
=5 mA to 1 A
0.8
0.8
0.5
mA mA mA
SVR Supply VoltageRejection V
i
= 15 to 25 V f= 120Hz
I
o
=500 mA
60 dB
V
d
Dropout Voltage Io=1A Tj=25oC2V
e
N
OutputNoise Voltage B = 10Hzto 100KHz Tj=25oC10
µ
V/V
o
R
o
OutputResistance f = 1KHz 18 m
I
sc
ShortCircuitCurrent Vi=35V T
amb
=25oC0.2A
I
scp
ShortCircuitPeack Current Tj=25oC2.2A
V
o
T
OutputVoltageDrift -1 mV/oC
* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
L7800AB/AC
9/17
ELECTRICAL CHARACTERISTICS FOR L7815A
(V
i
= 23V,Io= 1A, Tj= 0 to125oC (L7815AC),
T
j
= -40to 125oC (L7815AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
OutputVoltage Tj=25oC 14.7 15 15.3 V
V
o
OutputVoltage Io=5 mA to 1 A P
o
15 W
V
i
= 17.9to 30 V
14.4 15 15.6 V
V
o
* LineRegulation Vi= 17.9to 30 V Io=500 mA
V
i
=20to26V
V
i
=20to26V Tj=25oC
V
i
= 17.5to 30 V Tj=25oC
13 16
6
13
150 150
75
150
mV mV mV mV
V
o
* Load Regulation Io=5 mA to 1 A
I
o
=5 mA to 1.5A Tj=25oC
I
o
=250 to 750 mA
25 30 10
100 100
50
mV mV mV
I
d
QuiescentCurrent Tj=25oC4.46
6
mA
I
d
QuiescentCurrent Change Vi= 17.5to 30 V Io=500mA
V
i
= 17.5to 30 V Tj=25oC
I
o
=5 mA to 1 A
0.8
0.8
0.5
mA mA mA
SVR Supply VoltageRejection V
i
= 18.5to 28.5 V f =120 Hz
I
o
=500 mA
58 dB
V
d
Dropout Voltage Io=1A Tj=25oC2V
e
N
OutputNoise Voltage B = 10Hzto 100KHz Tj=25oC10
µ
V/V
o
R
o
OutputResistance f = 1KHz 19 m
I
sc
ShortCircuitCurrent Vi=35V T
amb
=25oC0.2A
I
scp
ShortCircuitPeack Current Tj=25oC2.2A
V
o
T
OutputVoltageDrift -1 mV/oC
* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
L7800AB/AC
10/17
ELECTRICAL CHARACTERISTICS FOR L7818A
(V
i
= 27V,Io= 1A, Tj= 0 to125oC (L7818AC),
T
j
= -40to 125oC (L7818AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
OutputVoltage Tj=25oC 17.64 18 18.36 V
V
o
OutputVoltage Io=5 mA to 1 A P
o
15 W
V
i
=21to33V
17.3 18 18.7 V
V
o
* LineRegulation Vi=21to33V Io=500mA
V
i
=24to30V
V
i
=24to30V Tj=25oC
V
i
= 20.6to 33 V Tj=25oC
25 28 10
5
180 180
90
180
mV mV mV mV
V
o
* Load Regulation Io=5 mA to 1 A
I
o
=5 mA to 1.5A Tj=25oC
I
o
=250 to 750 mA
25 30 10
100 100
50
mV mV mV
I
d
QuiescentCurrent Tj=25oC4.56
6
mA
I
d
QuiescentCurrent Change Vi=21to33V Io=500mA
V
i
=21to33V Tj=25oC
I
o
=5 mA to 1 A
0.8
0.8
0.5
mA mA mA
SVR Supply VoltageRejection V
i
= 22 to 32 V f= 120Hz
I
o
=500 mA
57 dB
V
d
Dropout Voltage Io=1A Tj=25oC2V
e
N
OutputNoise Voltage B = 10Hzto 100KHz Tj=25oC10
µ
V/V
o
R
o
OutputResistance f = 1KHz 19 m
I
sc
ShortCircuitCurrent Vi=35V T
amb
=25oC0.2A
I
scp
ShortCircuitPeack Current Tj=25oC2.2A
V
o
T
OutputVoltageDrift -1 mV/oC
* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
L7800AB/AC
11/17
ELECTRICAL CHARACTERISTICS FOR L7820A
(V
i
= 28V,Io= 1A, Tj= 0 to125oC (L7820AC),
T
j
= -40to 125oC (L7820AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
OutputVoltage Tj=25oC 19.6 20 20.4 V
V
o
OutputVoltage Io=5 mA to 1 A P
o
15 W
V
i
=23to35V
19.2 20 20.8 V
V
o
* LineRegulation Vi=23to35V Io=500mA
V
i
=26to32V
V
i
=26to32V Tj=25oC
V
i
=23to32V Tj=25oC
200 200 100 200
mV mV mV mV
V
o
* Load Regulation Io=5 mA to 1 A
I
o
=5 mA to 1.5A Tj=25oC
I
o
=250 to 750 mA
25 30 10
100 100
50
mV mV mV
I
d
QuiescentCurrent Tj=25oC4.56
6
mA
I
d
QuiescentCurrent Change Vi=23to35V Io=500mA
V
i
=23to35V Tj=25oC
I
o
=5 mA to 1 A
0.8
0.8
0.5
mA mA mA
SVR Supply VoltageRejection V
i
= 24 to 35 V f= 120Hz
I
o
=500 mA
56 dB
V
d
Dropout Voltage Io=1A Tj=25oC2V
e
N
OutputNoise Voltage B = 10Hzto 100KHz Tj=25oC10
µ
V/V
o
R
o
OutputResistance f = 1KHz 20 m
I
sc
ShortCircuitCurrent Vi=35V T
amb
=25oC0.2A
I
scp
ShortCircuitPeack Current Tj=25oC2.2A
V
o
T
OutputVoltageDrift -1 mV/oC
* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
L7800AB/AC
12/17
ELECTRICAL CHARACTERISTICS FOR L7824A
(V
i
= 33V,Io= 1A, Tj= 0 to125oC (L7824AC),
T
j
= -40to 125oC (L7824AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
OutputVoltage Tj=25oC 23.5 24 24.5 V
V
o
OutputVoltage Io=5 mA to 1 A P
o
15 W
V
i
= 27.3to 38 V
23 24 25 V
V
o
* LineRegulation Vi=27to38V Io=500mA
V
i
=30to36V
V
i
=30to36V Tj=25oC
V
i
= 26.7to 38 V Tj=25oC
31 35 14 31
240 240 120 240
mV mV mV mV
V
o
* Load Regulation Io=5 mA to 1 A
I
o
=5 mA to 1.5A Tj=25oC
I
o
=250 to 750 mA
25 30 10
100 100
50
mV mV mV
I
d
QuiescentCurrent Tj=25oC4.66
6
mA
I
d
QuiescentCurrent Change Vi= 27.3to 38 V Io=500mA
V
i
= 27.3to 38 V Tj=25oC
I
o
=5 mA to 1 A
0.8
0.8
0.5
mA mA mA
SVR Supply VoltageRejection V
i
= 28 to 38 V f= 120Hz
I
o
=500 mA
54 dB
V
d
Dropout Voltage Io=1A Tj=25oC2V
e
N
OutputNoise Voltage B = 10Hzto 100KHz Tj=25oC10
µ
V/V
o
R
o
OutputResistance f = 1KHz 20 m
I
sc
ShortCircuitCurrent Vi=35V T
amb
=25oC0.2A
I
scp
ShortCircuitPeack Current Tj=25oC2.2A
V
o
T
OutputVoltageDrift -1.5 mV/oC
* Load and line regulation are specified at constant junction temperature. Changes in Vodue to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
L7800AB/AC
13/17
APPLICATIONSINFORMATION
DESIGNCONSIDERATIONS The L7800ASeriesof fixedvoltage regulatorsare
designed with Thermal Overload Protection that shuts down the circuit when subjected to an excessive power overload condition, Internal Short-circuit Protection that limits the maximum currentthe circuit will pass, and Output Transistor Safe-AreaCompensation that reduces the output short-circuit current as the voltage across the passtransistoris increased.
In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with a capacitor if the regulator is
connected to the power supply filter with long wire lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high-frequency characteristics to insure stable operation underall load conditions. A 0.33µF or larger tantalum, mylar, or other capacitor having low internal impedanceat high frequenciesshould be chosen. The bypasscapacitor should bemounted with the shortest possible leads directly across the regulators input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops sincethe regulatorhas no externalsense lead.
Figure4 :
CurrentRegulator.
Figure5 :
AdjustableOutput Regulator.
Figure6 : CurrentBoost Regulator. Figure 7 : Short-circuitProtection.
VO, 7.0V to 20V V
i–VO
2.0V
The addition of an operational amplifier allows adjustmentto higher or intermediate values while retaining regulation characteristics. The minimum voltage obtainable with this arrangement is 2.0V greaterthan the regulatorvoltage.
The circuit of figure 6 can be modified to provide supply protectionagainst shortcircuit by adding a short-circuit sense resistor, R
sc
, and an additional PNP transistor. The current sensingPNP must be able to handle the short-circuit current of the three-terminal regulator. Therefore, a four-ampereplasticpower transistoris specified.
R1=
V
BEQ
1
I
REQ
I
Q
1
β
Q
1
IO=
I
REG
+
Q
1
(
I
REG
V
BEQ
1
R
1
)
I
O
=
V
XX
R
1
+
I
d
L7800AB/AC
14/17
DIM.
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107
D1 1.27 0.050
E 0.49 0.70 0.019 0.027
F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067
G 4.95 5.15 0.194 0.203
G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 0.409
L2 16.4 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.620 L7 6.2 6.6 0.244 0.260 L9 3.5 3.93 0.137 0.154
DIA. 3.75 3.85 0.147 0.151
L6
A
C
D
E
D1
F
G
L7
L2
Dia.
F1
L5
L4
H2
L9
F2
G1
TO-220 MECHANICAL DATA
P011C
L7800AB/AC
15/17
DIM.
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 4.4 4.6 0.173 0.181 A1 2.49 2.69 0.098 0.106
B 0.7 0.93 0.027 0.036 B2 1.14 1.7 0.044 0.067
C 0.45 0.6 0.017 0.023
C2 1.23 1.36 0.048 0.053
D 8.95 9.35 0.352 0.368
E 10 10.4 0.393 0.409
G 4.88 5.28 0.192 0.208
L 15 15.85 0.590 0.624 L2 1.27 1.4 0.050 0.055 L3 1.4 1.75 0.055 0.068
L2
L3
L
B2
B
G
E
A
C2
D
C
A1
DETAIL”A”
DETAIL”A”
A2
P011P6/F
TO-263 (D2PAK) MECHANICALDATA
L7800AB/AC
16/17
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L7800AB/AC
17/17
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