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KA7908TU Scheda tecnica(PDF) 10 Page - Fairchild Semiconductor

Il numero della parte KA7908TU
Spiegazioni elettronici  3-Terminal 1 A Negative Voltage Regulator
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Produttore elettronici  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA7908TU Scheda tecnica(HTML) 10 Page - Fairchild Semiconductor

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© 2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
KA79XX / KA79XXA / LM79XX Rev. 1.1.0
10
Electrical Characteristics (KA7918 / LM7918)
(VI = -27 V, IO = 500 mA, 0°C ≤ TJ ≤ +125°C, CI = 2.2 μF, CO =1 μF, unless otherwise specified.)
Note:
10. 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 is used.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
VO
Output Voltage
TJ = +25°C
-17.3
-18.0
-18.7
V
IO = 5 mA to 1 A, PO ≤ 15 W
VI = -22.5 V to -33 V
-17.1
-18.0
-18.9
ΔVO
Line Regulation(10)
TJ = +25°C
VI = -21 V to -33 V
15
360
mV
VI = -24 V to -30 V
8
180
ΔVO
Load Regulation(10)
TJ = +25°C, IO = 5 mA to 1.5 A
15
360
mV
TJ = +25°C, IO = 250 mA to 750 mA
5
180
IQ
Quiescent Current
TJ = +25°C3
6
mA
ΔIQ
Quiescent Current
Change
IO = 5 mA to 1 A
0.05
0.50
mA
VI = -21 V to -33 V
0.10
1.00
ΔVo/ΔT
Temperature Coefficient
of VD
IO = 5 mA
-1
mV/
°C
VN
Output Noise Voltage
f = 10 Hz to 100 kHz, TA = +25°C300
μV
RR
Ripple Rejection
f = 120 Hz,
ΔVI = 10 V
54
60
dB
VD
Dropout Voltage
TJ = +25°C, IO = 1 A
2
V
ISC
Short-Circuit Current
TJ = +25°C, VI = -35 V
300
mA
IPK
Peak Current
TJ =+25°C2.2
A


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