The LM78XX series of three-terminal positive regulators are available in ...
LM7805I. LM7805. Min Typ Max Min Typ Max. TJ =+25 °C. 4.8. 5.0. 5.2. 4.8. 5.0.
5.2.
LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE) 3-TERMINAL 1A POSITIVE VOLTAGE REGULATORS
TO-220
The LM78XX 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 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.
D-PAK
1
FEATURES • • • • •
1: Input 2: GND 3: Output
Output Current up to 1A Output Voltages of 5, 6, 8, 9, 10, 11, 12, 15, 18, 24V Thermal Overload Protection Short Circuit Protection Output Transistor SOA Protection
ORDERING INFORMATION Device
Output Voltage Tolerance
KA78XXCT
± 4%
KA78XXAT
± 2%
KA78XXIT KA78XXR
Packag e TO-220
± 2%
KA78XXIR
± 4%
0 ~ +125 °C -40 ~ +125 °C
± 4%
KA78XXAR
Operating Temperature
D-PAK
0 ~ +125 °C -40 ~ +125 °C
BLOCK DIAGRAM
Rev. B
1999 Fairchild Semiconductor Corporation
LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
ABSOLUTE MAXIMUM RATINGS (TA = +25°C, unless otherwise specified) Characteristic
Symbol
Value
Unit
VI VI
35 40
V V
Input Voltage (for VO = 5V to 18V) (for VO = 24V) Thermal Resistance Junction-Cases
RθJC
5
°C/W
Thermal Resistance Junction-Air
RθJA
65
Operating Temperature Range KA78XX/A/R/RA KA78XXI/RI
TOPR
0 ~ +125 -40 ~ +125
°C/W °C °C
Storage Temperature Range
TSTG
-65 ~ +150
°C
LM7805/I/R/RI ELECTRICAL CHARACTERISTICS (Refer to test circuit, TMIN < TJ < TMAX, IO = 500mA, VI = 10V, CI= 0.33µF, CO= 0.1µF, unless otherwise specified) Characteristic
Symbol
Test Conditions TJ =+25 °C
Output Voltage
Line Regulation Load Regulation Quiescent Current Quiescent Current Change Output Voltage Drift
VO
∆VO ∆VO IQ ∆IQ ∆VO/∆T VN
5.0mA ≤ IO ≤1.0A, PO ≤ 15W VI = 7V to 20V VI = 8V to 20V VO = 7V to 25V TJ=+25°C VI = 8V to 12V TJ=+25°C
4.0
100
50
1.6
50
IO = 5.0mA to1.5A
9
100
9
100
IO =250mA to 750mA
4
50
4
50
5.0
8
5.0
8
TJ =+25 °C IO = 5mA to 1.0A VI= 7V to 25V
0.03 0.5
VI= 8V to 25V IO= 5mA
0.3 -0.8
Short Circuit Current
ISC
Peak Current
IPK
VO
4.75 5.0 5.25 100
RO
RR
V
1.6
Output Resistance
Ripple Rejection Dropout Voltage
Unit
4.75 5.0 5.25 4.0
f = 10Hz to 100Khz, TA=+25 °C f = 120Hz VO = 8 to 18V IO = 1A, TJ =+25 °C f = 1KHz
Output Noise Voltage
LM7805I LM7805 Min Typ Max Min Typ Max 4.8 5.0 5.2 4.8 5.0 5.2
0.03 0.5 0.3 1.3
73
mV mA mA
1.3
42 62
mV
62
-0.8
mV/ °C
42
µV/Vo
73
dB
2
2
V
15
15
VI = 35V, TA =+25 °C
230
230
mΩ mA
TJ =+25 °C
2.2
2.2
A
* TMIN
