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PDF KA7905A Data sheet ( Hoja de datos )
| Número de pieza | KA7905A | |
| Descripción | 3-Terminal 1A Negative Voltage Regulator | |
| Fabricantes | Fairchild | |
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KA79XX/KA79XXA
3-Terminal 1A Negative Voltage Regulator
Features
• Output Current in Excess of 1A
• Output Voltages of -5, -6, -8, -9, -10, -12, -15, -18 , -24V
• Internal Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area Compensation
Description
The KA79XX/KA79XXA series of three-terminal negative
regulators are available in TO-220 package and with
several fixed output voltages, making them useful in a wide
range of applications. Each type employs internal current
limiting, thermal shutdown and safe operating area
protection, making it essentially indestructible.
TO-220
Vin
1
1. GND 2. Input 3. Output
Internal Block Digram
GND
VOLTAGE
REFERENCE
I1
+
-
I2
R1
R2
OOuutptut
Q1
PROTECTION
CIRCUITRY
Q2
Rsc
In
Input
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.1
1 page  
KA79XX/KA79XXA
Electrical Characteristics (KA7909) (Continued)
(VI = -15V, IO = 500mA, 0°C ≤ TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Parameter
Output Voltage
Line Regulation (Note1)
Load Regulation (Note1)
Quiescent Current
Quiescent Current Change
Temperature Coefficient of VD
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Short Circuit Current
Peak Current
Symbol
VO
∆VO
∆VO
IQ
∆IQ
∆Vo/∆T
VN
RR
VD
ISC
IPK
Conditions
Min.
TJ = +25°C
-8.7
IO = 5mA to 1A, PO ≤ 15W
VI = -1.5V to -23V
-8.6
TJ =+25°C
VI = -11.5V to -26V -
VI = -12V to -18V
-
TJ =+25°C, IO = 5mA to 1.5A
-
TJ =+25°C, IO = 250mA to 750mA
-
TJ = +25°C
-
IO = 5mA to 1A
-
VI = -11.5V to -26V
-
IO = 5mA
-
f = 10Hz to 100kHz, TA = +25°C
-
f = 120Hz, ∆VI = 10V
54
TJ = +25°C, IO = 1A
-
TJ = +25°C, VI = -35V
-
TJ = +25°C
-
Typ.
-9.0
-9.0
10
5
12
4
3
0.05
0.1
-0.6
175
60
2
300
2.2
Max.
-9.3
-9.4
Unit
V
180
mV
90
180
mV
90
6 mA
0.5
mA
1
- mV/°C
- µV
- dB
-V
- mA
-A
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.
5
5 Page 
KA79XX/KA79XXA
Electrical Characteristics (KA7905A) (Continued)
(VI = -10V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Parameter
Output Voltage
Symbol
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
IQ
Quiescent Current Change
∆IQ
Temperature Coefficient of VD
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Short Circuit Current
Peak Current
∆Vo/∆T
VN
RR
VD
ISC
IPK
Conditions
TJ = +25°C
IO = 5mA to 1A, PO ≤ 15W
VI = -7V to -20V
TJ = +25°C
VI = -7V to -20V
IO = 1A
VI = -8V to -12V
IO = 1A
VI = -7.5V to -25V
VI = -8V to -12V, IO=1A
IO = 5mA to 1.5A
TJ = +25°C
TJ =+25°C, IO = 250mA to 750mA
TJ =+25°C
IO = 5mA to 1A
VI = -8V to -25V
IO = 5mA
f = 10Hz to 100kHz, TA =+25°C
f = 120Hz, ∆VI = 10V
TJ = +25°C, IO = 1A
TJ = +25°C, VI = -35V
TJ = +25°C
Min.
-4.9
-4.8
Typ. Max.
-5.0 -5.1
-5.0 -5.2
Unit
V
- 5 50
- 2 25 mV
- 7 50
- 7 50
- 10 100
mV
- 3 50
- 3 6 mA
- 0.05 0.5
mA
- 0.1 0.8
- -0.4 - mV/°C
- 40 - µV
54 60
-
dB
-2- V
- 300 -
mA
- 2.2 -
A
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.
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet KA7905A.PDF ] | |
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