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MC79LXXA Datasheet(PDF) 6 Page - Fairchild Semiconductor

Part No. MC79LXXA
Description  3-Terminal 0.1A Negative Voltage Regulator
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

MC79LXXA Datasheet(HTML) 6 Page - Fairchild Semiconductor

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MC79LXXA/LM79LXXA
6
Electrical Characteristics(MC79L18A) (Continued)
(VI = -27V, IO = 40mA, CI = 0.33
µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Change 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
-17.3 -18.0
-18.7
V
Line Regulation (Note1)
∆VO
TJ = +25
°C
-20.7V
≥ VI ≥ -33V
-
-
325
mV
-21V
≥ VI ≥ -33V
-
-
275
mV
Load Regulation (Note1)
∆VO
TJ = +25
°C
1.0mA
≤ IO ≤ 100mA
-
-
170
mV
1.0mA
≤ IO ≤ 40mA
-
-
85
mV
Output Voltage
VO
-20.7V
> VI > -33V, 1.0mA ≤ IO ≤ 40mA -17.1
-
-18.9
V
VI = -27V, 1.0mA
≤ IO ≤ 70mA
-17.1
-
-18.9
V
Quiescent Current
IQ
TJ = +25
°C-
-
6.5
mA
TJ = +125
°C-
-
6.0
Quiescent Current
Change
With Line
∆IQ
-21V
≥ VI ≥ -33V
-
-
1.5
mA
With Load
∆IQ
1.0mA
≤ IO ≤ 40mA
-
-
0.1
mA
Output Noise Voltage
VN
TA =+25
°C,10Hz ≤ f ≤ 100kHz
-
150
-
µV
Ripple Rejection
RR
f = 120Hz, -23V
≥ VI ≥ -33V
TJ = +25
°C
33
48
-
dB
Dropout Voltage
VD
TJ = +25
°C-
1.7
-
V


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