IL79XXC
SERIES
T
HREE
-
TERMINAL NEGATIVE VOLTAGE REGULATORS
The IL7900 series of fixed output negative
voltage regulators are intended as complements to
the IL7800 series devices. These negative regulators
are available in the same seven-voltage options as
the IL7800 devices. In addition, one extra voltage
option commonly employed in MECL systems is also
available in the current series.
TO-220 AB
Pin 1. I nput
2. Ground
3. Output
(H eatsink
surface connected
to Pin 2.)
Available in fixed output voltage options from -5.0 to -24 volts, these regulators employ
current limiting, thermal shutdown, and safe-area compensation - making them remarkably
rugged under most operating conditions. With adequate heatsinking they can deliver
output currents in excess of 1.0 ampere.
♦
♦
♦
♦
No External Components Required
Internal Thermal Overload Protection
Internal Short - Circuit Current Limiting
Output Transistor Safe - Area
Compensation
♦
Available in 4% Voltage Tolerance
STANDARD APPLICATION
input
Cin
0.33 F
IL79XX
output
Co
1.0 F
Device
IL7905
IL7905.2
IL7906
IL7908
type/nominal output voltage
5V
IL7912
12 V
5.2 V
IL7915
15 V
6V
IL7918
18 V
8V
IL7924
24 V
A common ground is required between the input and
the output voltages. The input voltage must remain
typically 2.0V more negative even during the high
point on the input ripple voltage.
XX - these two digits of the type number indicate
voltage
Cin - is required if regulator is located an appreciable
distance from power supply filter
Co - improves stability and transient response
Maximum ratings
(T
A
= +25
°C
unless otherwise noted)
Rating
Input Voltage (-5.0V
≥Vo≥-
18V)
(24 V)
Power Dissipation
Plastic Package
TA
= +25
°C
Derate above TA
= +25
°C
Tc =
+25
°C
Derate above Tc=+95°C
Storage Junction Temperature Rang
Operating Junction Temperature Rang
Symbol
V
I
Value
-35
-40
Internally Limited
15.4
Internally Limited
200
-65 to +150
0 to +150
Unit
Vdc
PD
1/R
ΘJA
PD
1/R
ΘJA
Tstg
TJ
Watts
mW/°C
Watts
mW/°C
°C
°C
1
IL79XXC
SERIES
IL7905
Electrical characteristics
(V
I
= -10V, Io = 500mA, 0°C <T
J
<+125°C unless otherwise noted)
Characteristic
Output Voltage (TJ=+25°C)
Line Regulation (Note 1)
(TJ=+25°C, Io = 100mA)
-7.0Vdc
≥
V
I
≥
-25Vdc
-8.0Vdc
≥
V
I
≥
-12Vdc
(TJ=+25°C, Io =500mA)
-7.0Vdc
≥
V
I
≥
-25Vdc
-8.0Vdc
≥
V
I
≥
-12Vdc
Load Regulation (TJ=+25°C, Note 1)
5.0mA
≤
Io
≤
1.5A
250mA
≤
Io
≤
750 mA
Output Voltage
5.0mA
≤
Io
≤
1.0A, Po
≤15
W
-7.0Vdc
≥
V
I
≥
-25Vdc
Input Bias Current (TJ=+25°C)
Input Bias Current Change
-7.0Vdc
≥
V
I
≥
-25Vdc
5.0mA
≤
Io
≤
1.0A
Output Noise Voltage (TA=+25°C)
10 Hz
≤
f
≤
100 kHz
Ripple Rejection (Io=20mA f=120Hz)
Dropout Voltage (Io=1.0A, T
J
=+25°C)
Average Temperature Coefficient of
Output Voltage Io=5.0mA, 0°C <T
J
<+125°C
Symbol
Vo
Regline
Min
-4.8
-
-
Typ
-5.0
7.0
2.0
Max
-5.2
50
25
Unit
Vdc
mV
-
-
Regload
-
-
-4.75
35
8.0
11
4.0
-
100
50
mV
100
50
-5.25
Vo
Vcd
I
IB
∆
I
IB
e
on
RR
V
I
-Vo
DVo/DT
-
-
-
-
-
-
-
4.3
-
-
40
70
2.0
-1.0
8.0
1.3
0.5
-
-
-
-
mA
mA
µV
dB
Vdc
mV/°C
IL7905.2
Electrical characteristics
(V
I
= -10V, Io = 500mA, 0°C <T
J
<+125°C unless otherwise noted)
Characteristic
Symbol
Output Voltage (TJ=+25°C)
Line Regulation (Note 1)
(TJ=+25°C, Io = 100mA)
-7.2Vdc
≥
V
I
≥
-25Vdc
-8.0Vdc
≥
V
I
≥
-12Vdc
(TJ=+25°C, Io =500mA)
-7.2Vdc
≥
V
I
≥
-25Vdc
-8.0Vdc
≥
V
I
≥
-12Vdc
Load Regulation (TJ=+25°C, Note 1)
5.0mA
≤
Io
≤
1.5A
250mA
≤
Io
≤
750 mA
Output Voltage
5.0mA
≤
Io
≤
1.0A, Po
≤15
W
-7.2Vdc
≥
V
I
≥
-20Vdc
Input Bias Current (TJ=+25°C)
Input Bias Current Change
-7.2Vdc
≥
V
I
≥
-25Vdc
5.0mA
≤
Io
≤
1.5A
Output Noise Voltage (TA=+25°C)
10 Hz
≤
f
≤
100 kHz
Ripple Rejection (Io=20mA f=120Hz)
Dropout Voltage (Io=1.0A, T
J
=+25°C)
Average Temperature Coefficient of
Output Voltage Io=5.0mA, 0°C <T
J
<+125°C
Vo
Regline
Min
-5.0
-
-
Typ
-5.2
8.0
2.2
Max
-5.4
52
27
Unit
Vdc
mV
-
-
Regload
-
-
-4.95
37
8.5
12
4.5
-
105
52
mV
105
52
-5.45
Vo
Vcd
I
IB
∆
I
IB
e
on
RR
V
I
-Vo
DVo/Vo
-
-
-
-
-
-
-
4.3
-
-
42
68
2.0
-1.0
8.0
1.3
0.5
-
-
-
-
mA
mA
µV
dB
Vdc
mV/°C
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 cycle is used.
2
IL79XXC
SERIES
IL7906
Electrical characteristics
(V
I
= -11V, Io = 500mA, 0°C <T
J
<+125°C unless otherwise noted)
Characteristic
Output Voltage (TJ=+25°C)
Line Regulation (Note 1)
(TJ=+25°C, Io = 100mA)
-8.0Vdc
≥
V
I
≥
-25Vdc
-9.0Vdc
≥
V
I
≥
-13Vdc
(TJ=+25°C, Io =500mA)
-8.0Vdc
≥
V
I
≥
-25Vdc
-9.0Vdc
≥
V
I
≥
-13Vdc
Load Regulation (TJ=+25°C, Note 1)
5.0mA
≤
Io
≤
1.5A
250mA
≤
Io
≤
750 mA
Output Voltage
5.0mA
≤
Io
≤
1.0A, Po
≤15
W
-8.0Vdc
≥
V
I
≥
-21Vdc
Input Bias Current (TJ=+25°C)
Input Bias Current Change
-8.0Vdc
≥
V
I
≥
-25Vdc
5.0mA
≤
Io
≤
1.5A
Output Noise Voltage (TA=+25°C)
10 Hz
≤
f
≤
100 kHz
Ripple Rejection (Io=20mA f=120Hz)
Dropout Voltage (Io=1.0A, T
J
=+25°C)
Average Temperature Coefficient of
Output Voltage Io=5.0mA, 0°C <T
J
<+125°C
Symbol
Vo
Regline
Min
-5.75
-
-
Typ
-6.0
9.0
3.0
Max
-6.25
60
30
Unit
Vdc
mV
-
-
Regload
-
-
-5.7
43
10
13
5.0
-
120
60
mV
120
60
-6.3
Vo
Vcd
I
IB
∆
I
IB
e
on
RR
V
I
-Vo
DVo/Vo
-
-
-
-
-
-
-
4.3
-
-
45
65
2.0
-1.0
8.0
1.3
0.5
-
-
-
-
mA
mA
µV
dB
Vdc
mV/°C
IL7908
Electrical characteristics
(V
I
= -14V, Io = 500mA, 0°C <T
J
<+125°C unless otherwise noted)
Characteristic
Symbol
Output Voltage (TJ=+25°C)
Line Regulation (Note 1)
(TJ=+25°C, Io = 100mA)
-10.5Vdc
≥
V
I
≥
-25Vdc
-11Vdc
≥
V
I
≥
-17Vdc
(TJ=+25°C, Io =500mA)
-10.5Vdc
≥
V
I
≥
-25Vdc
-11Vdc
≥
V
I
≥
-17Vdc
Load Regulation (TJ=+25°C, Note 1)
5.0mA
≤
Io
≤
1.5A
250mA
≤
Io
≤
750 mA
Output Voltage
5.0mA
≤
Io
≤
1.0A, Po
≤15
W
-10.5Vdc
≥
V
I
≥
-23Vdc
Input Bias Current (TJ=+25°C)
Input Bias Current Change
-10.5Vdc
≥
V
I
≥
-25Vdc
5.0mA
≤
Io
≤
1.5A
Output Noise Voltage (TA=+25°C)
10 Hz
≤
f
≤
100 kHz
Ripple Rejection (Io=20mA f=120Hz)
Dropout Voltage (Io=1.0A, T
J
=+25°C)
Average Temperature Coefficient of
Output Voltage Io=5.0mA, 0°C <T
J
<+125°C
Vo
Regline
Min
-7.7
-
-
Typ
-8.0
12
5.0
Max
-8.3
80
40
Unit
Vdc
mV
-
-
Regload
-
-
-7.6
50
22
26
9.0
-
160
80
mV
160
80
-8.4
Vo
Vcd
I
IB
∆
I
IB
e
on
RR
V
I
-Vo
DVo/Vo
-
-
-
-
-
-
-
4.3
-
-
52
62
2.0
-1.0
8.0
1.0
0.5
-
-
-
-
mA
mA
µV
dB
Vdc
mV/°C
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 cycle is used.
3
IL79XXC
SERIES
IL7915
Electrical characteristics
(V
I
= -23V, Io = 500mA, 0°C <T
J
<+125°C unless otherwise noted)
Characteristic
Output Voltage (TJ=+25°C)
Line Regulation (Note 1)
(TJ=+25°C, Io = 100mA)
-17.5Vdc
≥
V
I
≥
-30Vdc
-20Vdc
≥
V
I
≥
-26Vdc
(TJ=+25°C, Io =500mA)
-17.5Vdc
≥
V
I
≥
-30Vdc
-20Vdc
≥
V
I
≥
-26Vdc
Load Regulation (TJ=+25°C, Note 1)
5.0mA
≤
Io
≤
1.5A
250mA
≤
Io
≤
750 mA
Output Voltage
5.0mA
≤
Io
≤
1.0A, Po
≤15
W
-17.5Vdc
≥
V
I
≥
-30Vdc
Input Bias Current (T
J
=+25°C)
Input Bias Current Change
-17.5Vdc
≥
V
I
≥
-30Vdc
5.0mA
≤
Io
≤
1.0A
Output Noise Voltage (TA=+25°C)
10 Hz
≤
f
≤
100 kHz
Ripple Rejection (Io=20mA f=120Hz)
Dropout Voltage (Io=1.0A, T
J
=+25°C)
Average Temperature Coefficient of
Output Voltage Io=5.0mA, 0°C <T
J
<+125°C
Symbol
Vo
Regline
Min
-14.4
-
-
Typ
-15
14
6.0
Max
-15.6
150
75
Unit
Vdc
mV
-
-
Regload
-
-
-14.25
57
27
68
25
-
300
150
mV
300
150
-15.75
Vo
Vcd
I
IB
∆
I
IB
e
on
RR
V
I
-Vo
DVo/Vo
-
-
-
-
-
-
-
4.4
-
-
90
60
2.0
-1.0
8.0
1.0
0.5
-
-
-
-
mA
mA
µV
dB
Vdc
mV/°C
IL7912
Electrical characteristics
(V
I
= -19V, Io = 500mA, 0°C <T
J
<+125°C unless otherwise noted)
Characteristic
Symbol
Output Voltage (TJ=+25°C)
Line Regulation (Note 1)
(TJ=+25°C, Io = 100mA)
-14.5Vdc
≥
V
I
≥
-30Vdc
-16Vdc
≥
V
I
≥
-22Vdc
(TJ=+25°C, Io =500mA)
-14.5Vdc
≥
V
I
≥
-30Vdc
-16Vdc
≥
V
I
≥
-22Vdc
Load Regulation (TJ=+25°C, Note 1)
5.0mA
≤
Io
≤
1.5A
250mA
≤
Io
≤
750 mA
Output Voltage
5.0mA
≤
Io
≤
1.0A, Po
≤15
W
-14.5Vdc
≥
V
I
≥
-27Vdc
Input Bias Current (T
J
=+25°C)
Input Bias Current Change
-14.5Vdc
≥
V
I
≥
-30Vdc
5.0mA
≤
Io
≤
1.5A
Output Noise Voltage (TA=+25°C)
10 Hz
≤
f
≤
100 kHz
Ripple Rejection (Io=20mA f=120Hz)
Dropout Voltage (Io=1.0A, T
J
=+25°C)
Average Temperature Coefficient of
Output Voltage Io=5.0mA, 0°C <T
J
<+125°C
Vo
Regline
Min
-11.5
-
-
Typ
-12
13
6.0
Max
-12.5
120
60
Unit
Vdc
mV
-
-
Regload
-
-
-11.4
55
24
46
17
-
240
120
mV
240
120
-12.6
Vo
Vcd
I
IB
∆
I
IB
e
on
RR
V
I
-Vo
DVo/Vo
-
-
-
-
-
-
-
4.4
-
-
75
61
2.0
-1.0
8.0
1.0
0.5
-
-
-
-
mA
mA
µV
dB
Vdc
mV/°C
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 cycle is used.
4
IL79XXC
SERIES
IL7918
Electrical characteristics
(V
I
= -27V, Io = 500mA, 0°C <T
J
<+125°C unless otherwise noted)
Characteristic
Output Voltage (TJ=+25°C)
Line Regulation (Note 1)
(TJ=+25°C, Io = 100mA)
-21Vdc
≥
V
I
≥
-33Vdc
-24Vdc
≥
V
I
≥
-30Vdc
(TJ=+25°C, Io =500mA)
-21Vdc
≥
V
I
≥
-33Vdc
-24Vdc
≥
V
I
≥
-30Vdc
Load Regulation (TJ=+25°C, Note 1)
5.0mA
≤
Io
≤
1.5A
250mA
≤
Io
≤
750 mA
Output Voltage
5.0mA
≤
Io
≤
1.0A, Po
≤15
W
-21Vdc
≥
V
I
≥
-33Vdc
Input Bias Current (T
J
=+25°C)
Input Bias Current Change
-21Vdc
≥
V
I
≥
-33Vdc
5.0mA
≤
Io
≤
1.5A
Output Noise Voltage (TA=+25°C)
10 Hz
≤
f
≤
100 kHz
Ripple Rejection (Io=20mA f=120Hz)
Dropout Voltage (Io=1.0A, T
J
=+25°C)
Average Temperature Coefficient of
Output Voltage Io=5.0mA, 0°C <T
J
<+125°C
Symbol
Vo
Regline
Min
-11.5
-
-
Typ
-12
25
10
Max
-12.5
180
90
Unit
Vdc
mV
-
-
Regload
-
-
-17.1
90
50
110
55
-
360
180
mV
360
180
-18.9
Vo
Vcd
I
IB
∆
I
IB
e
on
RR
V
I
-Vo
DVo/Vo
-
-
-
-
-
-
-
4.5
-
-
110
59
2.0
-1.0
8.0
1.0
0.5
-
-
-
-
mA
mA
µV
dB
Vdc
mV/°C
IL7924
Electrical characteristics
(V
I
= -33V, Io = 500mA, 0°C <T
J
<+125°C unless otherwise noted)
Characteristic
Symbol
Output Voltage (TJ=+25°C)
Line Regulation (Note 1)
(TJ=+25°C, Io = 100mA)
-27Vdc
≥
V
I
≥
-38Vdc
-30Vdc
≥
V
I
≥
-36Vdc
(TJ=+25°C, Io =500mA)
-27Vdc
≥
V
I
≥
-38Vdc
-30Vdc
≥
V
I
≥
-36Vdc
Load Regulation (TJ=+25°C, Note 1)
5.0mA
≤
Io
≤
1.5A
250mA
≤
Io
≤
750 mA
Output Voltage
5.0mA
≤
Io
≤
1.0A, Po
≤15
W
-27Vdc
≥
V
I
≥
-38Vdc
Input Bias Current (T
J
=+25°C)
Input Bias Current Change
-27Vdc
≥
V
I
≥
-38Vdc
5.0mA
≤
Io
≤
1.5A
Output Noise Voltage (TA=+25°C)
10 Hz
≤
f
≤
100 kHz
Ripple Rejection (Io=20mA f=120Hz)
Dropout Voltage (Io=1.0A, T
J
=+25°C)
Average Temperature Coefficient of
Output Voltage Io=5.0mA, 0°C <T
J
<+125°C
Vo
Regline
Min
-11.5
-
-
Typ
-12
31
14
Max
-12.5
240
120
Unit
Vdc
mV
-
-
Regload
-
-
-22.8
118
70
150
85
-
480
240
mV
480
240
-25.2
Vo
Vcd
I
IB
∆
I
IB
e
on
RR
V
I
-Vo
DVo/Vo
-
-
-
-
-
-
-
4.6
-
-
170
56
2.0
-1.0
8.0
1.0
0.5
-
-
-
-
mA
mA
µV
dB
Vdc
mV/°C
Note:
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.
5
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