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KA7912 Datenblatt(PDF) 2 Page - Fairchild Semiconductor

Teilenummer KA7912
Bauteilbeschribung  FIXED VOLTAGE REGULATOR (NEGATIVE)
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Hersteller  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA7912 Datenblatt(HTML) 2 Page - Fairchild Semiconductor

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MC79XX (LM79XX) (KA79XX/A)
FIXED VOLTAGE REGULATOR (NEGATIVE)
ABSOLUTE MAXIMUM RATINGS (T
A=+25
°C, unless otherwise specified)
LM7905 ELECTRICAL CHARACTERISTICS
(VI = 10V, lO = 500mA, 0
°C ≤T
J
≤ +125°C, C
I =2.2
µF, C
O =1
µF, unless otherwise specified.)
* 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.
Characteristic
Symbol
Value
Unit
Input Voltage
VI
-35
V
Thermal Resistance Junction-Cases
Junction-Air
RθJC
RθJA
5
65
°C / W
°C /W
Operating Temperature Range
TOPR
0 ~ +125
°C
Storage Temperature Range
TSTG
- 65 ~ +150
°C
Characteristic
Symbol
Test Conditions
Min
Typ
Max
Unit
TJ =+25
°C
- 4.8
- 5.0
- 5.2
Output Voltage
VO
IO = 5mA to 1A, PO 15W
VI = -7 to -20V
- 4.75
-5.0
- 5.25
V
VI = -7 to -20V
IO=1A
5
50
VI = -8 to -12V
IO=1A
2
25
VI = -7.5 to -25V
7
50
VI= -8 to -12V
IO=1A
7
50
IO = 5mA to 1.5A
10
100
TJ =+25
°C
IO = 250 to 750mA
3
50
Quiescent Current
IQ
TJ =+25
°C
3
6
mA
IO = 5mA to 1A
0.05
0.5
VI = -8 to -25V
0.1
0.8
Temperature Coefficient of VD
∆V
O/
∆T
IO = 5mA
- 0.4
mV/
°C
Output Noise Voltage
VN
f = 10Hz to 100KHz
TA =+25
°C
40
µV
Ripple Rejection
RR
f = 120Hz, IO = -35V
∆V
I = 10V
54
60
dB
Dropout Voltage
VD
TJ=+25
°C
IO = 1A
2
V
Short Circuit Current
ISC
TJ =+25
°C, V
I = -35V
300
mA
Peak Current
IPK
TJ =+25
°C
2.2
A
Load Regulation
∆V
O
Line Regulation
∆V
O
TJ =25
°C
mV
mV
Quiescent Current Change
∆I
Q
mA


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