MC7809 Datasheet PDF - Fairchild
Part Number | MC7809 | |
Description | 3-Terminal 1A Positive Voltage Regulator | |
Manufacturers | Fairchild | |
Logo | ||
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MC78XX/LM78XX/MC78XXA
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 MC78XX/LM78XX/MC78XXA series of three
terminal positive regulators 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
1
D-PAK
1
1. Input 2. GND 3. Output
Internal Block Digram
©2001 Fairchild Semiconductor Corporation
Rev. 1.0.1
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MC78XX/LM78XX/MC78XXA
Electrical Characteristics (MC7809)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =15V, 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
TJ =+25°C
5.0mA≤ IO ≤1.0A, PO ≤15W
VI= 11.5V to 24V
TJ=+25°C
VI = 11.5V to 25V
VI = 12V to 17V
TJ=+25°C
IO = 5mA to 1.5A
IO = 250mA to 750mA
TJ=+25°C
IO = 5mA to 1.0A
VI = 11.5V to 26V
IO = 5mA
f = 10Hz to 100KHz, TA =+25 °C
f = 120Hz
VI = 13V to 23V
IO = 1A, TJ=+25°C
f = 1KHz
VI= 35V, TA =+25°C
TJ= +25°C
MC7809
Min. Typ. Max.
8.65 9 9.35
Unit
8.6 9 9.4
V
- 6 180
mV
- 2 90
- 12 180
mV
- 4 90
- 5.0 8.0 mA
- - 0.5
mA
- - 1.3
- -1 - mV/ °C
- 58 - µV/Vo
56 71 -
dB
- 2-
- 17 -
- 250 -
- 2.2 -
V
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.
5
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Information | Total 28 Pages | |
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