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LM7908CT Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part # LM7908CT
Description  3-Terminal 1A Negative Voltage Regulator
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

LM7908CT Datasheet(HTML) 5 Page - Fairchild Semiconductor

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LM79XX
5
Electrical Characteristics (LM7909) (Continued)
(VI = -15V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2μF, CO =1μF, unless otherwise specified.)
Note:
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 is used.
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage
VO
TJ = +25°C
-8.7
-9.0
-9.3
V
IO = 5mA to 1A, PO ≤ 15W
VI = -1.5V to -23V
-8.6
-9.0
-9.4
Line Regulation (Note1)
ΔVO
TJ = +25°C
VI = -11.5V to -26V
-
10
180
mV
VI = -12V to -18V
-
5
90
Load Regulation (Note1)
ΔVO
TJ = +25°C
IO = 5mA to 1.5A
-
12
180
mV
TJ = +25°C
IO = 250mA to 750mA
-4
90
Quiescent Current
IQ
TJ = +25°C-
3
6
mA
Quiescent Current Change
ΔIQ
IO = 5mA to 1A
-
0.05
0.5
mA
VI = -11.5V to -26V
-
0.1
1
Temperature Coefficient of VD
ΔVo/ΔTIO = 5mA
-
-0.6
-
mV/
°C
Output Noise Voltage
VN
f = 10Hz to 100kHz
TA = +25°C
-175
-
μV
Ripple Rejection
RR
f = 120Hz
ΔVI = 10V
54
60
-
dB
Dropout Voltage
VD
TJ = +25°C
IO = 1A
-2-
V
Short Circuit Current
ISC
TJ = +25°C, VI = -35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C-
2.2
-
A


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