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PDF 7805A Datasheet ( Hoja de datos )

Número de pieza 7805A
Descripción Positive voltage regulator ICs
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo

Total 30 Páginas
		
7805A Hoja de datos, Descripción, Manual
L78
TO-220
TO-220FP
DPAK
D²PAK
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)
Positive voltage regulator ICs
Datasheet - production data
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.
March 2014
This is information on a product in full production.
DocID2143 Rev 32
1/58
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1 page

7805A pdf
Positive voltage regulator ICs
1 Diagram
Figure 1. Block diagram
Diagram
DocID2143 Rev 32
5/58
58

5 Page

7805A arduino
Positive voltage regulator ICs
Electrical characteristics
VI = 14 V, IO = 1 A, TJ = 0 to 125 °C (L7808AC), TJ = -40 to 125 °C (L7808AB), unless
otherwise specified(c).
Table 5. Electrical characteristics of L7808A
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
VO Output voltage
VO Output voltage
VO Output voltage
ΔVO (1) Line regulation
ΔVO (1) Load regulation
Iq Quiescent current
TJ = 25°C
IO = 5 mA to 1 A, VI = 10.6 to 21 V
IO = 1 A, VI = 21 to 23 V, TJ = 25°C
VI = 10.6 to 25 V, IO = 500 mA,
TJ = 25°C
VI = 11 to 17 V
VI = 11 to 17 V, TJ = 25°C
VI = 10.4 to 23 V, TJ = 25°C
IO = 5 mA to 1 A
IO = 5 mA to 1.5 A, TJ = 25°C
IO = 250 to 750 mA
TJ = 25°C
7.84 8 8.16 V
7.7 8 8.3 V
7.7 8 8.3 V
12 80 mV
15 80 mV
5 40 mV
12 80 mV
25 100
30 100 mV
10 50
4.3 6 mA
6 mA
VI = 11 to 23 V, IO = 500 mA
0.8 mA
ΔIq Quiescent current change VI = 10.6 to 23 V, TJ = 25°C
0.8 mA
IO = 5 mA to 1 A
0.5 mA
SVR Supply voltage rejection
VI = 11.5 to 21.5 V, f = 120 Hz,
IO = 500 mA
62 dB
Vd Dropout voltage
IO = 1 A, TJ = 25°C
2V
eN Output noise voltage
TA = 25°C, B =10 Hz to 100 kHz
10 µV/VO
RO Output resistance
f = 1 kHz
18 mΩ
Isc Short circuit current
VI = 35 V, TA = 25°C
0.2 A
Iscp Short circuit peak current TJ = 25°C
2.2 A
ΔVO/ΔT Output voltage drift
-0.8 mV/°C
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.
c. Minimum load current for regulation is 5 mA.
DocID2143 Rev 32
11/58
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