L7820C Datasheet PDF - STMicroelectronics
| Part Number | L7820C | |
| Description | POSITIVE VOLTAGE REGULATORS | |
| Manufacturers | STMicroelectronics | |
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L7800
® SERIES
POSITIVE VOLTAGE REGULATORS
s OUTPUT CURRENT UP TO 1.5 A
s OUTPUT VOLTAGES OF 5; 5.2; 6; 8; 8.5; 9;
12; 15; 18; 24V
s THERMAL OVERLOAD PROTECTION
s SHORT CIRCUIT PROTECTION
s OUTPUT TRANSITION SOA PROTECTION
DESCRIPTION
The L7800 series of three-terminal positive
regulators is available in TO-220 ISOWATT220
TO-3 and D2PAK 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
adjustable voltages and currents.
1
2
TO-3
D2PAK
TO-220
ISOWATT220
BLOCK DIAGRAM
November 1999
1/25
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L7800
ELECTRICAL CHARACTERISTICS FOR L7805 (refer to the test circuits, Tj = -55 to 150 oC,
Vi = 10V, Io = 500 mA, Ci = 0.33 µF, Co = 0.1 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Vo Output Voltage
Tj = 25 oC
4.8 5 5.2
Vo Output Voltage
∆Vo* Line Regulation
∆Vo* Load Regulation
Id Quiescent Current
Io = 5 mA to 1 A Po ≤ 15 W
Vi = 8 to 20 V
Vi = 7 to 25 V Tj = 25 oC
Vi = 8 to 12 V Tj = 25 oC
Io = 5 to 1500 mA Tj = 25 oC
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
4.65 5 5.35
3 50
1 25
1 00
25
6
∆Id Quiescent Current Change Io = 5 to 1000 mA
0.5
∆Id Quiescent Current Change Vi = 8 to 25 V
0.8
∆Vo Output Voltage Drift
∆T
eN Output Noise Voltage
Io = 5 mA
B = 10Hz to 100KHz Tj = 25 oC
0.6
40
SVR Supply Voltage Rejection
Vd Dropout Voltage
Vi = 8 to 18 V f = 120 Hz
Io = 1 A
Tj = 25 oC
68
2 2.5
Ro Output Resistance
Is c Short Circuit Current
Iscp Short Circuit Peak Current
f = 1 KHz
Vi = 35 V
Tj = 25 oC
Tj = 25 oC
17
0.75 1.2
1.3 2.2 3.3
Unit
V
V
mV
mV
mV
mV
mA
mA
mA
m V/ oC
µV/VO
dB
V
mΩ
A
A
ELECTRICAL CHARACTERISTICS FOR L7806 (refer to the test circuits, Tj = -55 to 150 oC,
Vi = 15V, Io = 500 mA, Ci = 0.33 µF, Co = 0.1 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Vo Output Voltage
Tj = 25 oC
5.75 6 6.25
Vo Output Voltage
∆Vo* Line Regulation
∆Vo* Load Regulation
Id Quiescent Current
Io = 5 mA to 1 A Po ≤ 15 W
Vi = 9 to 21 V
Vi = 8 to 25 V Tj = 25 oC
Vi = 9 to 13 V Tj = 25 oC
Io = 5 to 1500 mA Tj = 25 oC
Io = 250 to 750 mA Tj = 25 oC
Tj = 25 oC
5.65 6 6.35
60
30
1 00
30
6
∆Id Quiescent Current Change Io = 5 to 1000 mA
0.5
∆Id Quiescent Current Change Vi = 9 to 25 V
0.8
∆Vo Output Voltage Drift
∆T
Io = 5 mA
0.7
eN Output Noise Voltage
B = 10Hz to 100KHz Tj = 25 oC
40
SVR Supply Voltage Rejection
Vd Dropout Voltage
Vi = 9 to 19 V f = 120 Hz
Io = 1 A
Tj = 25 oC
65
2 2.5
Ro Output Resistance
Is c Short Circuit Current
Iscp Short Circuit Peak Current
f = 1 KHz
Vi = 35 V
Tj = 25 oC
Tj = 25 oC
19
0.75 1.2
1.3 2.2 3.3
Unit
V
V
mV
mV
mV
mV
mA
mA
mA
m V/ oC
µV/VO
dB
V
mΩ
A
A
* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account
separately. Pulce testing with low duty cycle is used.
5/25
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| Information | Total 25 Pages | |
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