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KA7912 Folha de dados(PDF) 2 Page - Fairchild Semiconductor

Nome de Peças KA7912
Descrição Electrónicos  3-Terminal 1A Negative Voltage Regulator
Download  18 Pages
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA7912 Folha de dados(HTML) 2 Page - Fairchild Semiconductor

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KA79XX/KA79XXA
2
Absolute Maximum Ratings
Note:
1. Thermal resistance test board
Size: 76.2mm * 114.3mm * 1.6mm(1S0P)
JEDEC standard: JESD51-3, JESD51-7
2. Assume no ambient airflow
Electrical Characteristics (KA7905)
(VI = -10V, IO = 500mA, 0
°C ≤ TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note
3. 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
Value
Unit
Input Voltage
VI
-35
V
Thermal Resistance Junction-Case (Note1)
R
θJC
5
°C/W
Thermal Resistance Junction-Air (Note1, 2)
R
θJA
65
°C/W
Operating Temperature Range
TOPR
0 ~ +125
°C
Storage Temperature Range
TSTG
- 65 ~ +150
°C
Parameter
Symbol
Conditions
Min.
Typ. Max.
Unit
Output Voltage
VO
TJ = +25
°C
-4.8
-5.0
-5.2
V
IO = 5mA to 1A, PO
15W
VI = -7V to -20V
-4.75 -5.0
-5.25
Line Regulation (Note3)
∆VO
TJ = +25
°C
VI = -7V to -25V
-
35
100
mV
VI = -8V to -12V
-
8
50
Load Regulation (Note3)
∆VO
TJ = +25
°C, IO = 5mA to 1.5A
-
10
100
mV
TJ =+25
°C, IO = 250mA to 750mA
-
3
50
Quiescent Current
IQ
TJ =+25
°C-
3
6
mA
Quiescent Current Change
∆IQ
IO = 5mA to 1A
-
0.05
0.5
mA
VI = -8V to -25V
-
0.1
0.8
Temperature Coefficient of VD
∆Vo/∆TIO = 5mA
-
-0.4
-
mV/
°C
Output Noise Voltage
VN
f = 10Hz to 100kHz, TA = +25
°C-
40
-
µV
Ripple Rejection
RR
f = 120Hz,
∆VI = 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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