IL78XXC SERIES
1
THREE-TERMINAL POSITIVE VOLTAGE REGULATORS
These voltage regulators are monolithic
integrated circuits designed fixed-voltage regulators
for a wide variety of applications including local, on
card regulation. These regulators employ internal
current limiting, thermal shutdown, and safe-area
compensation. With adequate heatsinking they can
deliver output currents in excess of 1.0 ampere.
Although designed primarily as a fixed voltage regulator, these devices can be used with
external components to obtain adjustable voltages and currents.
• Output Current in Excess of 1.0 Ampere
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short - Circuit Current Limiting
• Output Transistor Safe-Area Compensation
• Output Voltage Offered in 2% and 4% Tolerance
Device type/nominal output voltage
IL7806
IL7806
IL7808
IL7809
5 V
6 V
8 V
9 V
IL7812
IL7815
IL7818
IL7824
12 V
15 V
18 V
24 V
Ño**
0.1
µ
F
Ñin*
0.33
µ
F
Vout
Vin IL78XX
A common ground i s requi r ed between t h
e
input and the output voltage. The input voltag
e
must remain typically 2.0 V above the output volt-
age even duri ng the low poi nt on t he i nput ri ppl
e
vol t age.
X X = these two di gi ts of t he type number i ndi cat
e
vol t age.
∗ = Cin is required if regulator is located an appre-
ciabl distance from power supply filter.
∗∗ = Co is not needed for st abi l i t y ; howewer, i
s
does improve transient response
XX indicates nominal voltage
Standard application
Maximum ratings (TA = +25 °C unless otherwise noted)
Rating Symbol Value Unit
Input Voltage (5.0 V - 18 V)
(24 V)
Vin 35
40
Vdc
Power Dissipation and Thermal Characteristics
Plastic Package
TA = +25 °C
Derate above TA = 25 °C
Thermal Resistance, Junction to Air
TA = +25 °C
Derate above TC = +75 °C (See Figure 1)
Thermal Resistance, Junction to Case
PD
1/RΘJA
RΘJC
PD
1/RΘJC
RΘJC
Internally Limited
15.4
65
Internally Limited
200
5.0
Watts
mW/°C
°C/W
Watts
mW/°C
°C/W
Storage Junction Temperature Range Tstg -65 to +150 °C
Operating Junction Temperature Range
IL78XXC
TJ
0 to +125
°C
Pin 1. I nput
2. Ground
3. Output
(Heatsink
sur face connect ed
to Pin 2.)
TO- 220 AB
IL78XXC SERIES
2
IL7805
Electrical characteristics
(Vin = 10V, Io = 500mA, TJ = Tlow to Thigh (Note 1) unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ=+25°C) Vo 4.8 5.0 5.2 Vdc
Output Voltage
(5.0 mA≤Io≤1.0A, Po≤15 W)
7.0Vdc≤Vin≤20Vdc
Vo 4.75 5.0 5.25 Vdc
Line Regulation(TJ=+25°C, Note2)
7.0Vdc≤Vin≤25Vdc
8.0Vdc≤Vin≤13Vdc
Regline
-
-
9.0
3.0
100
50
mV
Load Regulation(TJ=+25°C,Note2)
5.0mA≤ Io ≤1.5A
250mA≤ Io ≤750 mA
Regload
-
-
43
16
100
50
mV
Quiescent Current (TJ=+25°C) IB - 4.3 8.0 mA
Quiescent Current Change
7.0Vdc ≤Vin ≤25Vdc
5.0mA≤ Io ≤1.0A
∆ IB
-
-
-
-
1.3
0.5
mA
Ripple Rejection
8.0Vdc≤Vin≤18Vdc, f = 120 Hz
RR - 68 - dB
Dropout Voltage (Io=1.0A,T =+25°C) Vin-Vo - 2.0 - Vdc
Output Noise Voltage(TA=+25°C)
10 Hz ≤f≤100 kHz
Vn - 10 -
µV/Vo
Output Resistance f = 1.0 kHz ro - 17 - mΩ
Short -Circuit Current Limit
(TA=+25°C) Vin = 35 Vdc
Isc - 0.2 - A
Peak Output Current(TJ=+25°C) Imax - 2.2 - A
Average Temperature Coefficient of
Output Voltage
TCVo - -0.8 -
mV/°C
IL7806
Electrical characteristics
(Vin = 11V, Io = 500mA, TJ = Tlow to Thigh (Note 1) unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ=+25°C) Vo 5.75 6.0 6.25 Vdc
Output Voltage
(5.0 mA≤Io≤1.0A, Po≤15 W)
8.0Vdc≤Vin≤21Vdc
9.0Vdc≤Vin≤21Vdc
Vo
5.7
-
6.0
-
6.3
-
Vdc
Line Regulation(TJ=+25°C, Note2)
8.0Vdc≤Vin≤25Vdc
9.0Vdc≤Vin≤13Vdc
Regline
-
-
9.0
3.0
120
60
mV
Load Regulation(TJ=+25°C,Note2)
5.0mA≤Io≤1.5A
250mA≤Io≤750 mA
Regload
-
-
43
16
120
60
mV
Quiescent Current (TJ=+25°C) IB - 4.3 8.0 mA
Quiescent Current Change
8.0Vdc≤Vin≤25Vdc
5.0mA≤Io≤1.0A
∆ IB
-
-
-
-
1.3
0.5
mA
Ripple Rejection
9.0Vdc≤Vin≤19Vdc, f = 120 Hz
RR - 65 - dB
Dropout Voltage (Io=1.0A,T =+25°C) Vin-Vo - 2.0 - Vdc
Output Noise Voltage(TA=+25°C)
10 Hz ≤f≤100 kHz
Vn - 10 -
µV/Vo
Output Resistance f = 1.0 kHz ro - 17 - mΩ
Short -Circuit Current Limit(TA=+25°C)
Vin = 35 Vdc
Isc - 0.2 - A
Peak Output Current(TJ=+25°C) Imax - 2.2 - A
Average Temperature Coefficient of
Output Voltage
TCVo - -0.8 -
mV/°C
Note: 1. Tlow = 0 °C , Thigh = +125 0 °C
2.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 cycle is used.
IL78XXC SERIES
3
IL7808
Electrical characteristics
(Vin = 11V, Io = 500mA, TJ = Tlow to Thigh (Note 1) unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ=+25°C) Vo 7.7 8.0 8.0 Vdc
Output Voltage
(5.0 mA≤Io≤1.0A, Po≤15 W)
10.5Vdc≤Vin≤23Vdc
Vo 7.6 8.0 8.4 Vdc
Line Regulation(TJ=+25°C, Note2)
10.5Vdc≤Vin≤25Vdc
11Vdc≤Vin≤17Vdc
Regline
-
-
12
5.0
160
80
mV
Load Regulation(TJ=+25°C,Note2)
5.0mA≤Io≤1.5A
250mA≤Io≤750 mA
Regload
-
-
45
16
160
80
mV
Quiescent Current (TJ=+25°C) IB - 4.3 8.0 mA
Quiescent Current Change
10.5Vdc≤Vin≤25Vdc
5.0mA≤Io≤1.0A
∆ IB
-
-
-
-
1.0
0.5
mA
Ripple Rejection
11.5Vdc≤Vin≤21.5Vdc, f = 120 Hz
RR - 62 - dB
Dropout Voltage (Io=1.0A,T =+25°C) Vin-Vo - 2.0 - Vdc
Output Noise Voltage(TA=+25°C)
10 Hz ≤f≤100 kHz
Vn - 10 -
µV/Vo
Output Resistance f = 1.0 kHz ro - 18 - mΩ
Short -Circuit Current Limit(TA=+25°C)
Vin = 35 Vdc
Isc - 0.2 - A
Peak Output Current(TJ=+25°C) Imax - 2.2 - A
Average Temperature Coefficient of
Output Voltage
TCVo - -0.8 -
mV/°C
IL7809
Electrical characteristics
(Vin = 15V, Io = 500mA, TJ = 0°C to +125°C unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ=+25°C) Vo 8.65 9.0 9.35 Vdc
Output Voltage
(5.0 mA≤Io≤1.0A, Po≤15 W)
11.5Vdc≤Vin≤24Vdc
Vo 8.55 9.0 9.45 Vdc
Line Regulation(TJ=+25°C, Note2)
11.5Vdc≤Vin≤26V dc
11.5Vdc≤Vin≤17Vdc
Regline
-
-
12
5.0
180
90
mV
Load Regulation(TJ=+25°C, Note2)
5.0mA≤Io≤1.5A
250mA≤Io≤750 mA
Regload
-
-
35
12
180
90
mV
Quiescent Current (TJ=+25°C) IB - 4.3 8.0 mA
Quiescent Current Change
11.5Vdc≤Vin≤26Vdc
5.0mA≤Io≤1.0A
∆ IB
-
-
-
-
1.0
0.5
mA
Ripple Rejection
11.5Vdc≤Vin≤21.5Vdc, f = 120 Hz
RR - 61 - dB
Dropout Voltage (Io=1.0A,T =+25°C) Vin-Vo - 2.0 - Vdc
Output Noise Voltage(TA=+25°C)
10 Hz ≤f≤100 kHz
Vn - 10 -
µV/Vo
Output Resistance f = 1.0 kHz ro - 18 - mΩ
Short -Circuit Current Limit
(TA=+25°C) Vin = 35 Vdc
Isc - 0.2 - A
Peak Output Current(TJ=+25°C) Imax - 2.2 - A
Average Temperature Coefficient of
Output Voltage
TCVo - -1.0 -
mV/°C
Note: 1. Tlow = 0 °C , Thigh = +125 0 °C
2.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 cycle is used.
IL78XXC SERIES
4
IL7812
Electrical characteristics
(Vin = 19V, Io = 500mA, TJ = Tlow to Tlow (Note 1) unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ=+25°C) Vo 11.5 12 12.5 Vdc
Output Voltage
(5.0 mA≤Io≤1.0A, Po≤15 W)
14.5Vdc≤Vin≤27Vdc
Vo 11.4 12 12.6 Vdc
Line Regulation(TJ=+25°C, Note2)
14.5Vdc≤Vin≤30Vdc
16Vdc≤Vin≤22Vdc
Regline
-
-
13
6.0
240
120
mV
Load Regulation(TJ=+25°C,Note2)
5.0mA≤Io≤1.5A
250mA≤Io≤750 mA
Regload
-
-
46
17
240
120
mV
Quiescent Current (TJ=+25°C) IB - 4.4 8.0 mA
Quiescent Current Change
14.5Vdc≤Vin≤30Vdc
5.0mA≤Io≤1.0A
∆ IB
-
-
-
-
1.0
0.5
mA
Ripple Rejection
15Vdc≤Vin≤25Vdc, f = 120 Hz
RR - 60 - dB
Dropout Voltage (Io=1.0A,T =+25°C) Vin-Vo - 2.0 - Vdc
Output Noise Voltage(TA=+25°C)
10 Hz ≤f≤100 kHz
Vn - 10 -
µV/Vo
Output Resistance f = 1.0 kHz ro - 18 - mΩ
Short - Circuit Current Limit
(TA=+25°C) Vin = 35 Vdc
Isc - 0.2 - A
Peak Output Current(TJ=+25°C) Imax - 2.2 - A
Average Temperature Coefficient of
Output Voltage
TCVo - -1.0 -
mV/°C
IL7815
Electrical characteristics
(Vin = 11V, Io = 500mA, TJ = Tlow to Thigh (Note 1) unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ=+25°C) Vo 14.4 15 15.6 Vdc
Output Voltage
(5.0 mA≤Io≤1.0A, Po≤15 W)
17.5Vdc≤Vin≤30Vdc
Vo 14.25 15 15.75 Vdc
Line Regulation(TJ=+25°C, Note2)
17.5Vdc≤Vin≤30Vdc
20Vdc≤Vin≤26Vdc
Regline
-
-
13
6.0
300
150
mV
Load Regulation(TJ=+25°C,Note2)
5.0mA≤Io≤1.5A
250mA≤Io≤750 mA
Regload
-
-
52
20
300
150
mV
Quiescent Current (TJ=+25°C) IB - 4.4 8.0 mA
Quiescent Current Change
17.5Vdc≤Vin≤30Vdc
5.0mA≤Io≤1.0A
∆ IB
-
-
-
-
1.0
0.5
mA
Ripple Rejection
18.5Vdc≤Vin≤28.5Vdc, f = 120 Hz
RR - 58 - dB
Dropout Voltage (Io=1.0A,T =+25°C) Vin-Vo - 2.0 - Vdc
Output Noise Voltage(TA=+25°C)
10 Hz ≤f≤100 kHz
Vn - 10 -
µV/Vo
Output Resistance f = 1.0 kHz ro - 19 - mΩ
Short - Circuit Current Limit
(TA=+25°C) Vin = 35 Vdc
Isc - 0.2 - A
Peak Output Current(TJ=+25°C) Imax - 2.2 - A
Average Temperature Coefficient of
Output Voltage
TCVo - -1.0 -
mV/°C
Note: 1. Tlow = 0 °C , Thigh = +125 0 °C
2.Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken
into accountseparately. Pulse testing with low duty cycle is used.
IL78XXC SERIES
5
IL7818
Electrical characteristics
(Vin = 27V, Io = 500mA, TJ = Tlow to Thigh (Note 1) unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ=+25°C) Vo 17.3 18 18.7 Vdc
Output Voltage
(5.0 mA≤Io≤1.0A, Po≤15 W)
21Vdc≤Vin≤33Vdc
Vo 17.1 18 18.9 Vdc
Line Regulation(TJ=+25°C, Note2)
21Vdc≤Vin≤33Vdc
24Vdc≤Vin≤30Vdc
Regline
-
-
25
10
360
180
mV
Load Regulation(TJ=+25°C,Note2)
5.0mA≤Io≤1.5A
250mA≤Io≤750 mA
Regload
-
-
55
22
360
180
mV
Quiescent Current (TJ=+25°C) IB - 4.5 8.0 mA
Quiescent Current Change
21Vdc≤Vin≤33Vdc
5.0mA≤Io≤1.0A
∆ IB
-
-
-
-
1.0
0.5
mA
Ripple Rejection
22Vdc≤Vin≤33Vdc, f = 120 Hz
RR - 57 - dB
Dropout Voltage (Io=1.0A,T =+25°C) Vin-Vo - 2.0 - Vdc
Output Noise Voltage(TA=+25°C)
10 Hz ≤f≤100 kHz
Vn - 10 -
µV/Vo
Output Resistance f = 1.0 kHz ro - 19 - mΩ
Short - Circuit Current Limit
(TA=+25°C) Vin = 35 Vdc
Isc - 0.2 - A
Peak Output Current(TJ=+25°C) Imax - 2.2 - A
Average Temperature Coefficient of
Output Voltage
TCVo - -1.0 -
mV/°C
IL7824
Electrical characteristics
(Vin = 33V, Io = 500mA, TJ = Tlow to Thigh (Note 1) unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ=+25°C) Vo 23 24 25 Vdc
Output Voltage
(5.0 mA≤Io≤1.0A, Po≤15 W)
27Vdc≤Vin≤38Vdc
Vo 22.8 24 25.2 Vdc
Line Regulation(TJ=+25°C, Note2)
27Vdc≤Vin≤38Vdc
30Vdc≤Vin≤38Vdc
Regline
-
-
31
14
480
240
mV
Load Regulation(TJ=+25°C,Note2)
5.0mA≤Io≤1.5A
250mA≤Io≤750 mA
Regload
-
-
60
25
480
240
mV
Quiescent Current (TJ=+25°C) IB - 4.6 8.0 mA
Quiescent Current Change
27Vdc≤Vin≤38Vdc
5.0mA≤Io≤1.0A
∆ IB
-
-
-
-
1.0
0.5
mA
Ripple Rejection
28Vdc≤Vin≤38Vdc, f = 120 Hz
RR - 54 - dB
Dropout Voltage (Io=1.0A,T =+25°C) Vin-Vo - 2.0 - Vdc
Output Noise Voltage(TA=+25°C)
10 Hz ≤f≤13100 kHz
Vn - 10 -
µV/Vo
Output Resistance f = 1.0 kHz ro - 20 - mΩ
Short - Circuit Current Limit
(TA=+25°C) Vin = 35 Vdc
Isc - 0.2 - A
Peak Output Current(TJ=+25°C) Imax - 2.2 - A
Average Temperature Coefficient of
Output Voltage
TCVo - -1.5 -
mV/°C
Note: 1. Tlow = 0 °C , Thigh = +125 0 °C
2.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 cycle is used.
