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UA7808CKCSE3 Fiches technique(PDF) 8 Page - Texas Instruments

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No de pièce UA7808CKCSE3
Description  FIXED POSITIVE VOLTAGE REGULATORS
Download  23 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

UA7808CKCSE3 Fiches technique(HTML) 8 Page - Texas Instruments

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R1
0.33
µF
Input
Output
µA78xx
0.1
µF
IO
R2
V
O + Vxx )
Vxx
R1 )
I
Q R2
A:
The following formula is used when Vxx is the nominal output voltage (output to common) of the fixed regulator:
OUT
IN
G
−VO
COM
+
VI
IL
µA78xx
+VO
+V
0.1
µF
0.33
µF
µA78xx
μA7800 SERIES
SLVS056O – MAY 1976 – REVISED AUGUST 2012
www.ti.com
uA7824 Electrical Characteristics (continued)
at specified virtual junction temperature, VI = 33 V, IO = 500 mA (unless otherwise noted)
μA7824C
PARAMETER
TEST CONDITIONS
TJ
(1)
UNIT
MIN
TYP
MAX
IO = 5 mA to 1.5 A
12
480
Output voltage regulation
25°C
mV
IO = 250 mA to 750 mA
4
240
Output resistance
f = 1 kHz
0°C to 125°C
0.028
Temperature coefficient of output voltage
IO = 5 mA
0°C to 125°C
–1.5
mV/°C
Output noise voltage
f = 10 Hz to 100 kHz
25°C
170
μV
Dropout voltage
IO = 1 A
25°C
2
V
Bias current
25°C
4.6
8
mA
VI = 27 V to 38 V
1
Bias current change
0°C to 125°C
mA
IO = 5 mA to 1 A
0.5
Short-circuit output current
25°C
150
mA
Peak output current
25°C
2.1
A
APPLICATION INFORMATION
Figure 2. Fixed-Output Regulator
Figure 3. Positive Regulator in Negative Configuration (VI Must Float)
Figure 4. Adjustable-Output Regulator
8
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Copyright © 1976–2012, Texas Instruments Incorporated


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