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L78 データシート(PDF) 7 Page - STMicroelectronics

部品番号 L78
部品情報  Thermal overload protection
PDF  54 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L78 データシート(HTML) 7 Page - STMicroelectronics

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L78
Electrical characteristics
DocID2143 Rev 34
7/54
5
Electrical characteristics
VI = 10 V, IO = 1 A, TJ = 0 to 125 °C (L7805AC), TJ = -40 to 125 °C (L7805AB), unless
otherwise specifieda
Table 3: Electrical characteristics of L7805A
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25 °C
4.9
5
5.1
V
VO
Output voltage
IO = 5 mA to 1 A, VI = 7.5 to 18 V
4.8
5
5.2
V
VO
Output voltage
IO = 1 A, VI = 18 to 20 V, TJ = 25 °C
4.8
5
5.2
V
∆VO (1)
Line regulation
VI = 7.5 to 25 V, IO = 500 mA, TJ = 25 °C
7
50
mV
VI = 8 to 12 V
10
50
mV
VI = 8 to 12 V, TJ = 25 °C
2
25
mV
VI = 7.3 to 20 V, TJ = 25 °C
7
50
mV
∆VO (1)
Load regulation
IO = 5 mA to 1 A
25
100
mV
IO = 5 mA to 1.5 A, TJ = 25 °C
30
100
IO = 250 to 750 mA
8
50
Iq
Quiescent current
TJ = 25 °C
4.3
6
mA
6
mA
∆Iq
Quiescent current change
VI = 8 to 23 V, IO = 500 mA
0.8
mA
VI = 7.5 to 20 V, TJ = 25 °C
0.8
mA
IO = 5 mA to 1 A
0.5
mA
SVR
Supply voltage rejection
VI = 8 to 18 V, f = 120 Hz, IO = 500 mA
68
dB
Vd
Dropout voltage
IO = 1 A, TJ = 25 °C
2
V
eN
Output noise voltage
TA = 25 °C, B =10 Hz to 100 kHz
10
µV/VO
RO
Output resistance
f = 1 kHz
17
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
∆VO/∆T
Output voltage drift
-1.1
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.



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