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PDF L7809AC Data sheet ( Hoja de datos )

Número de pieza L7809AC
Descripción PRECISION 1A REGULATORS
Fabricantes STMicroelectronics 
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No Preview Available ! L7809AC Hoja de datos, Descripción, Manual

L78
Positive voltage regulator ICs
Datasheet - production data
Features
Output current up to 1.5 A
Output voltages of 5; 6; 8; 8.5; 9; 12; 15; 18;
24 V
Thermal overload protection
Short circuit protection
Output transition SOA protection
2 % output voltage tolerance (A version)
Guaranteed in extended temperature range
(A version)
Description
The L78 series of three-terminal positive
regulators is available in TO-220, TO-220FP,
D²PAK and DPAK 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
embeds internal current limiting, thermal shut-
down and safe area protection, making it
essentially indestructible. If adequate heat
sinking is provided, they can deliver over 1 A
output current. Although designed primarily as
fixed voltage regulators, these devices can be
used with external components to obtain
adjustable voltage and currents.
November 2016
DocID2143 Rev 34
This is information on a product in full production.
1/54
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L7809AC pdf
L78 Maximum ratings
3 Maximum ratings
Symbol
Table 1: Absolute maximum ratings
Parameter
Value
Unit
VI
IO
PD
TSTG
TOP
DC input voltage
Output current
Power dissipation
Storage temperature range
Operating junction temperature range
for VO= 5 to 18 V
for VO= 20, 24 V
for L78xxC, L78xxAC
for L78xxAB
35
40
Internally limited
Internally limited
-65 to 150
0 to 125
-40 to 125
V
°C
°C
Absolute maximum ratings are those values beyond which damage to the device
may occur. Functional operation under these condition is not implied.
Symbol
RthJC
RthJA
Table 2: Thermal data
Parameter
D²PAK DPAK
Thermal resistance junction-case
38
Thermal resistance junction-ambient 62.5 100
TO-220
5
50
TO-220FP
5
60
Unit
°C/W
°C/W
Figure 4: Application circuits
DocID2143 Rev 34
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L7809AC arduino
L78 Electrical characteristics
VI = 19 V, IO = 1 A, TJ = 0 to 125 °C (L7812AC), TJ = -40 to 125 °C (L7812AB), unless
otherwise specifieda
Table 7: Electrical characteristics of L7812A
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
VO Output voltage
VO Output voltage
VO Output voltage
∆VO (1) Line regulation
∆VO (1) Load regulation
Iq Quiescent current
TJ = 25 °C
11.75 12 12.25
IO = 5 mA to 1 A, VI = 14.8 to 25 V
11.5 12 12.5
IO = 1 A, VI = 25 to 27 V, TJ = 25 °C
11.5 12 12.5
VI = 14.8 to 30 V, IO = 500 mA, TJ = 25 °C
13 120
VI = 16 to 12 V
16 120
VI = 16 to 12 V, TJ = 25 °C
6 60
VI = 14.5 to 27 V, TJ = 25 °C
13 120
IO = 5 mA to 1 A
25 100
IO = 5 mA to 1.5 A, TJ = 25 °C
30 100
IO = 250 to 750 mA
10 50
TJ = 25 °C
4.4 6
6
V
V
V
mV
mV
mV
mV
mV
mA
mA
DIq
SVR
Vd
eN
RO
Isc
Iscp
∆VO/∆T
Quiescent current change
Supply voltage rejection
Dropout voltage
Output noise voltage
Output resistance
Short circuit current
Short circuit peak current
Output voltage drift
VI = 15 to 30 V, IO = 500 mA
VI = 14.8 to 27 V, TJ = 25 °C
IO = 5 mA to 1 A
VI = 15 to 25 V, f = 120 Hz, IO = 500 mA
IO = 1 A, TJ = 25 °C
TA = 25 °C, B = 10 Hz to 100 kHz
f = 1 kHz
VI = 35 V, TA = 25 °C
TJ = 25 °C
0.8 mA
0.8 mA
0.5 mA
60 dB
2V
10 µV/VO
18 mΩ
0.2 A
2.2 A
-1 mV/°C
Notes:
(1)Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into
account separately. Pulse testing with low duty cycle is used.
a Minimum load current for regulation is 5 mA.
DocID2143 Rev 34
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