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零件编号 | KA7809A | ||
描述 | 3-Terminal 1A Positive Voltage Regulator | ||
制造商 | Fairchild | ||
LOGO | |||
1 Page
www.fairchildsemi.com
KA78XX/KA78XXA
3-Terminal 1A Positive Voltage Regulator
Features
• Output Current up to 1A
• Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V
• Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area Protection
Description
The KA78XX/KA78XXA series of three-terminal positive
regulator are available in the TO-220/D-PAK package and
with several fixed output voltages, making them useful in a
wide range of applications. Each type employs internal
current limiting, thermal shut down and safe operating area
protection, making it essentially indestructible. If adequate
heat sinking is provided, they can deliver over 1A output
current. Although designed primarily as fixed voltage
regulators, these devices can be used with external
components to obtain adjustable voltages and currents.
TO-220
Internal Block Digram
1
D-PAK
1
1. Input 2. GND 3. Output
©2001 Fairchild Semiconductor Corporation
Rev. 1.0.0
KA78XX/KA78XXA
Electrical Characteristics (KA7815)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =23V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Parameter
Output Voltage
Line Regulation (Note1)
Load Regulation (Note1)
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Symbol
VO
Regline
Regload
IQ
∆IQ
∆VO/∆T
VN
RR
VDrop
rO
ISC
IPK
Conditions
KA7815
Unit
Min. Typ. Max.
TJ =+25 oC
14.4 15 15.6
5.0mA ≤ IO≤1.0A, PO≤15W
VI = 17.5V to 30V
14.25 15 15.75 V
TJ =+25 oC
VI = 17.5V to 30V
VI = 20V to 26V
- 11 300
mV
- 3 150
TJ =+25 oC
TJ =+25 oC
IO = 5mA to 1.5A
IO = 250mA to 750mA
-
-
-
12 300
4 150
5.2 8.0
mV
mA
IO = 5mA to 1.0A
VI = 17.5V to 30V
IO = 5mA
f = 10Hz to 100KHz, TA =+25 oC
- - 0.5
mA
- - 1.0
- -1 - mV/ oC
- 90 - µV/Vo
f = 120Hz
VI = 18.5V to 28.5V
IO = 1A, TJ=+25 oC
54 70
-2
-
-
dB
V
f = 1KHz
VI = 35V, TA=+25 oC
TJ =+25 oC
- 19 -
- 250 -
- 2.2 -
mΩ
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.
8
KA78XX/KA78XXA
Electrical Characteristics (KA7812A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 19V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Parameter
Output Voltage
Line Regulation (Note1)
Load Regulation (Note1)
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Symbol
VO
Regline
Regload
IQ
∆IQ
∆V/∆T
VN
RR
VDrop
rO
ISC
IPK
Conditions
TJ =+25 °C
IO = 5mA to 1A, PO ≤15W
VI = 14.8V to 27V
VI= 14.8V to 30V
IO = 500mA
VI= 16V to 22V
TJ =+25 °C
VI= 14.5V to 27V
VI= 16V to 22V
TJ =+25 °C
IO = 5mA to 1.5A
IO = 5mA to 1.0A
IO = 250mA to 750mA
TJ =+25°C
VI = 15V to 30V, TJ=+25 °C
VI = 14V to 27V, IO = 500mA
IO = 5mA to 1.0A
IO = 5mA
f = 10Hz to 100KHz
TA =+25°C
f = 120Hz, IO = 500mA
VI = 14V to 24V
IO = 1A, TJ =+25°C
f = 1KHz
VI= 35V, TA =+25 °C
TJ=+25 °C
Min. Typ. Max.
11.75 12 12.25
11.5 12 12.5
Unit
V
- 10 120
- 4 120 mV
- 10 120
- 3 60
- 12 100
- 12 100 mV
- 5 50
- 5.1 6.0 mA
- 0.8
- 0.8 mA
- 0.5
- -1.0 - mV/°C
- 10
- µV/Vo
- 60
-
- 2.0
-
- 18
-
- 250 -
- 2.2
-
dB
V
mΩ
mA
A
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.
16
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页数 | 28 页 | ||
下载 | [ KA7809A.PDF 数据手册 ] |
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