1.0 A Negative Voltage Regulators

MC7900 Series
1.0 A Negative Voltage
Regulators
The MC7900 series of fixed output negative voltage regulators are
intended as complements to the popular MC7800 series devices.
These negative regulators are available in the same seven−voltage
options as the MC7800 devices. In addition, one extra voltage option
commonly employed in MECL systems is also available in the
negative MC7900 series.
Available in fixed output voltage options from − 5.0 V to − 24 V,
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 A.
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe−Area Compensation
• Available in 2% Voltage Tolerance (See Ordering Information)
• Pb−Free Package May be Available. The G−Suffix Denotes a
Pb−Free Lead Finish
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TO−220
T SUFFIX
CASE 221AB
Heatsink surface
connected to Pin 2.
D2PAK
D2T SUFFIX
CASE 936
2.0 k
14.7 k
4.0 k
1.0 k
12 k
1.2 k
4.0 k
1.0 k
3
1
2
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
25
2.4 k
8.0 k
3.6 k
2
Pin 1. Ground
2. Input
3. Output
Gnd
2.0 k
1
R1
STANDARD APPLICATION
1.6 k
R2
MC79XX
Input
VO
10 k
Cin*
0.33 mF
Output
CO**
1.0 mF
20 pF
10 pF
2.0 k
20 k
20 k
10 k
240
0.3
1.1 k
750
VI
This device contains 26 active transistors.
Figure 1. Representative Schematic Diagram
A common ground is required between the input
and the output voltages. The input voltage must
remain typically 2.0 V above more negative even
during the high point of the input ripple voltage.
XX, These two digits of the type number
indicate nominal voltage.
** Cin is required if regulator is located an
appreciable distance from power supply filter.
** CO improve stability and transient response.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 14 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
July, 2013 − Rev. 18
1
Publication Order Number:
MC7900/D
MC7900 Series
MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.)
Symbol
Value
Unit
VI
−35
−40
Vdc
PD
qJA
qJC
Internally Limited
65
5.0
W
°C/W
°C/W
PD
qJA
qJC
Internally Limited
70
5.0
W
°C/W
°C/W
Storage Junction Temperature Range
Tstg
−65 to +150
°C
Junction Temperature
TJ
+150
°C
Rating
Input Voltage (−5.0 V ≥ VO ≥ −18 V)
Input Voltage (24 V)
Power Dissipation
Case 221A
TA = +25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Case 936 (D2PAK)
TA = +25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
*This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL_STD_883, Method 3015
Machine Model Method 200 V
MC7905B, MC7905C
ELECTRICAL CHARACTERISTICS (VI = −10 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = +25°C)
VO
−4.8
−5.0
−5.2
Vdc
Line Regulation (Note 1)
(TJ = +25°C, IO = 100 mA)
−7.0 Vdc ≥ VI ≥ − 25 Vdc
−8.0 Vdc ≥ VI ≥ −12 Vdc
(TJ = +25°C, IO = 500 mA)
−7.0 Vdc ≥ VI ≥ − 25 Vdc
−8.0 Vdc ≥ VI ≥ −12 Vdc
Regline
Load Regulation, TJ = +25°C (Note 1)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
Output Voltage
−7.0 Vdc ≥ VI ≥ − 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current (TJ = +25°C)
IIB
Input Bias Current Change
−7.0 Vdc ≥ VI ≥ − 25 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
mV
−
−
7.0
2.0
50
25
−
−
35
8.0
100
50
−
−
11
4.0
100
50
−4.75
−
−5.25
−
4.3
8.0
−
−
−
−
1.3
0.5
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
40
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
70
−
dB
−
1.3
−
−
−1.0
−
Dropout Voltage
IO = 1.0 A, TJ = +25°C
VI−VO
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, Tlow* ≤ TJ ≤ +125°C
DVO/DT
Vdc
mV/°C
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.
*Tlow = −40°C for MC7905B and Tlow = 0°C for MC7905C.
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MC7900 Series
MC7905AC
ELECTRICAL CHARACTERISTICS (VI = −10 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics
Output Voltage (TJ = +25°C)
Symbol
Min
Typ
Max
Unit
VO
−4.9
−5.0
−5.1
Vdc
−
−
−
−
2.0
7.0
7.0
6.0
25
50
50
50
−
−
−
11
4.0
9.0
100
50
100
−4.80
−
−5.20
−
4.4
8.0
−
−
−
−
−
−
1.3
0.5
0.5
Line Regulation (Note 2)
−8.0 Vdc ≥ VI ≥ −12 Vdc; IO = 1.0 A, TJ = +25°C
−8.0 Vdc ≥ VI ≥ −12 Vdc; IO = 1.0 A
−7.5 Vdc ≥ VI ≥ − 25 Vdc; IO = 500 mA
−7.0 Vdc ≥ VI ≥ − 20 Vdc; IO = 1.0 A, TJ = +25°C
Regline
Load Regulation (Note 2)
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
250 mA ≤ IO ≤ 750 mA
5.0 mA ≤ IO ≤ 1.0 A
Regload
Output Voltage
−7.5 Vdc ≥ VI ≥ − 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current
IIB
Input Bias Current Change
−7.5 Vdc ≥ VI ≥ − 25 Vdc
5.0 mA ≤ IO ≤ 1.0 A
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
DIIB
mV
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
40
−
mV
Ripple Rejection (IO = mA, f = 120 Hz)
RR
−
70
−
dB
VI−VO
−
1.3
−
Vdc
−
−1.0
−
Dropout Voltage (IO = 1.0 A. TJ = +25°C)
Average Temperature Coefficient of Output Voltage
IO = 5.0 A, 0°C ≤ TJ ≤ +125°C
DVO/DT
mV/°C
MC7905.2C
ELECTRICAL CHARACTERISTICS (VI = −10 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = +25°C)
VO
−5.0
−5.2
−5.4
Vdc
Line Regulation (Note 2)
(TJ = +25°C, IO = 100 mA)
−7.2 Vdc ≥ VI ≥ − 25 Vdc
−8.0 Vdc ≥ VI ≥ −12 Vdc
(TJ = +25°C, IO = 500 mA)
−7.2 Vdc ≥ VI ≥ − 25 Vdc
−8.0 Vdc ≥ VI ≥ −12 Vdc
Regline
Load Regulation, TJ = +25°C (Note 2)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
Characteristics
Output Voltage
−7.2 Vdc ≥ VI ≥ − 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current (TJ = +25°C)
IIB
Input Bias Current Change
−7.2 Vdc ≥ VI ≥ − 25 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
mV
−
−
8.0
2.2
52
27
−
−
37
8.5
105
52
−
−
12
4.5
105
52
−4.95
−
−5.45
−
4.3
8.0
−
−
−
−
1.3
0.5
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
42
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
68
−
dB
VI−VO
−
1.3
−
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, 0°C ≤ TJ ≤ +125°C
DVO/DT
Vdc
mV/°C
−
−1.0
−
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.
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MC7900 Series
MC7906C
ELECTRICAL CHARACTERISTICS (VI = −11 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = +25°C)
VO
−5.75
−6.0
−6.25
Vdc
Line Regulation (Note 3)
(TJ = +25°C, IO = 100 mA)
−8.0 Vdc ≥ VI ≥ − 25 Vdc
−9.0 Vdc ≥ VI ≥ −13 Vdc
(TJ = +25°C, IO = 500 mA)
−8.0 Vdc ≥ VI ≥ − 25 Vdc
−9.0 Vdc ≥ VI ≥ −13 Vdc
Regline
Load Regulation, TJ = +25°C (Note 3)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
Output Voltage
−8.0 Vdc ≥ VI ≥ − 21 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current (TJ = +25°C)
IIB
Input Bias Current Change
−8.0 Vdc ≥ VI ≥ − 25 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
mV
−
−
9.0
3.0
60
30
−
−
43
10
120
60
−
−
13
5.0
120
60
−5.7
−
−6.3
−
4.3
8.0
−
−
−
−
1.3
0.5
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
45
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
65
−
dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
VI−VO
−
1.3
−
Vdc
−
−1.0
−
Average Temperature Coefficient of Output Voltage
IO = 5.0 A, 0°C ≤ TJ ≤ +125°C
DVO/DT
mV/°C
MC7908C
ELECTRICAL CHARACTERISTICS (VI = −14 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics
Output Voltage (TJ = +25°C)
Symbol
Min
Typ
Max
Unit
VO
−7.7
−8.0
−8.3
Vdc
Line Regulation (Note 3)
(TJ = +25°C, IO = 100 mA)
−10.5 Vdc ≥ VI ≥ −25 Vdc
−11 Vdc ≥ VI ≥ −17 Vdc
(TJ = +25°C, IO = 500 mA)
−10.5 Vdc ≥ VI ≥ −25 Vdc
−11 Vdc ≥ VI ≥ −17 Vdc
Regline
Load Regulation, TJ = +25°C (Note 3)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
Output Voltage
−10.5 Vdc ≥ VI ≥ − 23 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current (TJ = +25°C)
IIB
Input Bias Current Change
−10.5 Vdc ≥ VI ≥ − 25 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
mV
−
−
12
5.0
80
40
−
−
50
22
160
80
−
−
26
9.0
160
80
−7.6
−
−8.4
−
4.3
8.0
−
−
−
−
1.0
0.5
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
52
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
62
−
dB
VI−VO
−
1.3
−
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, 0°C ≤ TJ ≤ +125°C
DVO/DT
Vdc
mV/°C
−
−1.0
−
3. 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.
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MC7900 Series
MC7912B, MC7912C
ELECTRICAL CHARACTERISTICS (VI = −19 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics
Output Voltage (TJ = +25°C)
Symbol
Min
Typ
Max
Unit
VO
−11.5
−12
−12.5
Vdc
Line Regulation (Note 4)
(TJ = +25°C, IO = 100 mA)
−14.5 Vdc ≥ VI ≥ − 30 Vdc
−16 Vdc ≥ VI ≥ − 22 Vdc
(TJ = +25°C, IO = 500 mA)
−14.5 Vdc ≥ VI ≥ − 30 Vdc
−16 Vdc ≥ VI ≥ − 22 Vdc
Regline
Load Regulation, TJ = +25°C (Note 4)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
Output Voltage
−14.5 Vdc ≥ VI ≥ − 27 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current (TJ = +25°C)
IIB
Input Bias Current Change
−14.5 Vdc ≥ VI ≥ − 30 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
mV
−
−
13
6.0
120
60
−
−
55
24
240
120
−
−
46
17
240
120
−11.4
−
−12.6
−
4.4
8.0
−
−
−
−
1.0
0.5
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
75
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
61
−
dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
VI−VO
−
1.3
−
Vdc
−
−1.0
−
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, Tlow* ≤ TJ ≤ +125°C
DVO/DT
mV/°C
MC7912AC
ELECTRICAL CHARACTERISTICS (VI = −19 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics
Output Voltage (TJ = +25°C)
Symbol
Min
Typ
Max
Unit
VO
−11.75
−12
−12.25
Vdc
−
−
−
−
6.0
24
24
13
60
120
120
120
−
−
−
46
17
35
150
75
150
−11.5
−
−12.5
−
4.4
8.0
−
−
−
−
−
−
0.8
0.5
0.5
Line Regulation (Note 4)
−16 Vdc ≥ VI ≥ − 22 Vdc; IO = 1.0 A, TJ = +25°C
−16 Vdc ≥ VI ≥ − 22 Vdc; IO = 1.0 A
−14.8 Vdc ≥ VI ≥ − 30 Vdc; IO = 500 mA
−14.5 Vdc ≥ VI ≥ − 27 Vdc; IO = 1.0 A, TJ = +25°C
Regline
Load Regulation (Note 4)
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
250 mA ≤ IO ≤ 750 mA
5.0 mA ≤ IO ≤ 1.0 A
Regload
Output Voltage
−14.8 Vdc ≥ VI ≥ − 27 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current
IIB
Input Bias Current Change
−15 Vdc ≥ VI ≥ − 30 Vdc
5.0 mA ≤ IO ≤ 1.0 A
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
DIIB
mV
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
75
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
61
−
dB
VI−VO
−
1.3
−
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
Average Temperature Coefficient of Output Voltage
IO = 5.0 A, Tlow* ≤ TJ ≤ +125°C
DVO/DT
Vdc
mV/°C
−
−1.0
−
4. 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.
*Tlow = −40°C for MC7912B and Tlow = 0°C for MC7912C.
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MC7900 Series
MC7915B, MC7915C
ELECTRICAL CHARACTERISTICS (VI = − 23 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics
Output Voltage (TJ = +25°C)
Symbol
Min
Typ
Max
Unit
VO
−14.4
−15
−15.6
Vdc
Line Regulation (Note 5)
(TJ = +25°C, IO = 100 mA)
−17.5 Vdc ≥ VI ≥ − 30 Vdc
−20 Vdc ≥ VI ≥ − 26 Vdc
(TJ = +25°C, IO = 500 mA)
−17.5 Vdc ≥ VI ≥ − 30 Vdc
−20 Vdc ≥ VI ≥ − 26 Vdc
Regline
Load Regulation, TJ = +25°C (Note 5)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
Output Voltage
−17.5 Vdc ≥ VI ≥ − 30 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current (TJ = +25°C)
IIB
Input Bias Current Change
−17.5 Vdc ≥ VI ≥ − 30 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
mV
−
−
14
6.0
150
75
−
−
57
27
300
150
−
−
68
25
300
150
−14.25
−
−15.75
−
4.4
8.0
−
−
−
−
1.0
0.5
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
90
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
60
−
dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
VI−VO
−
1.3
−
Vdc
−
−1.0
−
Average Temperature Coefficient of Output Voltage
IO = 5.0 A, Tlow* ≤ TJ ≤ +125°C
DVO/DT
mV/°C
MC7915AC
ELECTRICAL CHARACTERISTICS (VI = − 23 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics
Output Voltage (TJ = +25°C)
Symbol
Min
Typ
Max
Unit
VO
−14.7
−15
−15.3
Vdc
−
−
−
−
27
57
57
57
75
150
150
150
−
−
−
68
25
40
150
75
150
−14.4
−
−15.6
−
4.4
8.0
−
−
−
−
−
−
0.8
0.5
0.5
Line Regulation (Note 5)
−20 Vdc ≥ VI ≥ − 26 Vdc, IO = 1.0 A, TJ = +25°C
−20 Vdc ≥ VI ≥ − 26 Vdc, IO = 1.0 A,
−17.9 Vdc ≥ VI ≥ − 30 Vdc, IO = 500 mA
−17.5 Vdc ≥ VI ≥ − 30 Vdc, IO = 1.0 A, TJ = +25°C
Regline
Load Regulation (Note 5)
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
250 mA ≤ IO ≤ 750 mA
5.0 mA ≤ IO ≤ 1.0 A
Regload
Output Voltage
−17.9 Vdc ≥ VI ≥ − 30 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current
IIB
Input Bias Current Change
−17.5 Vdc ≥ VI ≥ − 30 Vdc
5.0 mA ≤ IO ≤ 1.0 A
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
DIIB
mV
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
90
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
60
−
dB
VI−VO
−
1.3
−
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, Tlow* ≤ TJ ≤ +125°C
DVO/DT
Vdc
mV/°C
−
−1.0
−
5. 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.
*Tlow = −40°C for MC7915B and Tlow = 0°C for MC7915C.
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MC7900 Series
MC7918C
ELECTRICAL CHARACTERISTICS (VI = − 27 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = +25°C)
VO
−17.3
−18
−18.7
Vdc
Line Regulation (Note 6)
(TJ = +25°C, IO = 100 mA)
−21 Vdc ≥ VI ≥ − 33 Vdc
−24 Vdc ≥ VI ≥ − 30 Vdc
(TJ = +25°C, IO = 500 mA)
−21 Vdc ≥ VI ≥ − 33 Vdc
−24 Vdc ≥ VI ≥ − 30 Vdc
Regline
Load Regulation, TJ = +25°C (Note 6)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
Output Voltage
−21 Vdc ≥ VI ≥ − 33 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current (TJ = +25°C)
IIB
Input Bias Current Change
−21 Vdc ≥ VI ≥ − 33 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
mV
−
−
25
10
180
90
−
−
90
50
360
180
−
−
110
55
360
180
−17.1
−
−18.9
−
4.5
8.0
−
−
−
−
1.0
0.5
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
110
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
59
−
dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
VI−VO
−
1.3
−
Vdc
−
−1.0
−
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, 0°C ≤ TJ ≤ +125°C
DVO/DT
mV/°C
MC7924B, MC7924C
ELECTRICAL CHARACTERISTICS (VI = − 33 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = +25°C)
VO
−23
−24
−25
Vdc
Line Regulation (Note 6)
(TJ = +25°C, IO = 100 mA)
−27 Vdc ≥ VI ≥ − 38 Vdc
−30 Vdc ≥ VI ≥ − 36 Vdc
(TJ = +25°C, IO = 500 mA)
−27 Vdc ≥ VI ≥ − 38 Vdc
−30 Vdc ≥ VI ≥ − 36 Vdc
Regline
Load Regulation, TJ = +25°C (Note 6)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
Characteristics
Output Voltage
−27 Vdc ≥ VI ≥ − 38 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
Input Bias Current (TJ = +25°C)
IIB
Input Bias Current Change
−27 Vdc ≥ VI ≥ − 38 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
mV
−
−
31
14
240
120
−
−
118
70
470
240
−
−
150
85
480
240
−22.8
−
−25.2
−
4.6
8.0
−
−
−
−
1.0
0.5
mV
Vdc
mA
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz)
Vn
−
170
−
mV
Ripple Rejection (IO = 20 mA, f = 120 Hz)
RR
−
56
−
dB
VI−VO
−
1.3
−
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, Tlow* ≤ TJ ≤ +125°C
DVO/DT
Vdc
mV/°C
−
−1.0
−
6. 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.
*Tlow = −40°C for MC7924B and Tlow = 0°C for MC7924C.
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7
MC7900 Series
20
10
qHS = 5°C/W
5.0
4.0 qHS = 15°C/W
3.0
2.0
I O , OUTPUT CURRENT (A)
PD, POWER DISSIPATION (W)
2.5
Infinite Heatsink
No Heatsink
1.0
0.5
0.4
0.3
0.2
qJC = 5° C/W
qJA = 65° C/W
PD(max) = 15W
0.1
25
50
75
100
125
1.0
0.5
0
3.0
6.0
9.0
12
15
18
21
24
27
|VI -VO| INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V)
Figure 2. Worst Case Power Dissipation as a
Function of Ambient Temperature
Figure 3. Peak Output Current as a Function
of Input−Output Differential Voltage
30
80
Vin = -11 V
VO = -6.0 V
IO = 20 mA
80
RR, RIPPLE REJECTION (dB)
RR, RIPPLE REJECTION (dB)
1.5
TA, AMBIENT TEMPERATURE (°C)
60
40
20
10
100
1.0 k
10 k
60
50
f, FREQUENCY (Hz)
8.0
10
12
14
16
VO, OUTPUT VOLTAGE (V)
Figure 4. Ripple Rejection as a
Function of Frequency
Figure 5. Ripple Rejection as a Function
of Output Voltage
2.0
4.0
6.0
18
20
22
I IB , INPUT BIAS CURRENT (mA)
5.2
6.22
6.18
6.14
Vin = -11 V
VD = -6.0 V
IO = 20 mA
6.10
6.06
-25
f = 120 Hz
IO = 20 mA
DVin = 1.0 V(RMS)
70
40
100 k
6.26
VO, OUTPUT VOLTAGE (-V)
TJ = +25°C
0
150
100
0
2.0
5.0
4.8
4.4
4.2
0
25
50
75
100
125
150
175
Vin = -11 V
VO = -6.0 V
IO = 20 mA
4.6
0
25
50
75
100
TJ, JUNCTION TEMPERATURE (°C)
TJ, JUNCTION TEMPERATURE (°C)
Figure 6. Output Voltage as a Function
of Junction Temperature
Figure 7. Quiescent Current as a
Function of Temperature
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8
125
MC7900 Series
APPLICATIONS INFORMATION
Design Considerations
-10 V
Input
The MC7900 Series of fixed voltage regulators are
designed with Thermal overload Protection that shuts down
the circuit when subjected to an excessive power overload
condition. Internal Short Circuit Protection that limits the
maximum current the circuit will pass, and Output Transistor
Safe−Area Compensation that reduces the output short circuit
current as the voltage across the pass transistor is increased.
In many low current applications, compensation
capacitors are not required. However, it is recommended
that the regulator input be bypassed with a capacitor if the
regulator is connected to the power supply filter with long
wire lengths, or if the output load capacitance is large. An
input bypass capacitor should be selected to provide good
high−frequency characteristics to insure stable operation
under all load conditions. A 0.33 mF or larger tantalum,
mylar, or other capacitor having low internal impedance at
high frequencies should be chosen. The capacitor chosen
should have an equivalent series resistance of less than
0.7 W. The bypass capacitor should be mounted with the
shortest possible leads directly across the regulators input
terminals. Normally good construction techniques should be
used to minimize ground loops and lead resistance drops
since the regulator has no external sense lead. Bypassing the
output is also recommended.
-20 V
Input
MC7905
10
IO = 200 mA
R
VO ≤ 10 V
-5.0 V
Output
0.56
2N3055*
or Equiv
0.56
0.56
MJE200*
or Equiv
MC7905*
5.6
10 mF
+
Gnd
+
1.0 mF
Figure 9. Current Boost Regulator
(−5.0 V @ 4.0 A, with 5.0 A Current Limiting)
When a boost transistor is used, short circuit currents are
equal to the sum of the series pass and regulator limits, which
are measured at 3.2 A and 1.8 A respectively in this case.
Series pass limiting is approximately equal to 0.6 V/RSC.
Operation beyond this point to the peak current capability of
the MC7905C is possible if the regulator is mounted on a
heatsink; otherwise thermal shutdown will occur when the
additional load current is picked up by the regulator.
1N4001G or Equiv
+20 V
Input
0.33 mF
+15 V
Output
MC7815
+
1.0 mF
+
+
+
1.0 mF
Gnd
Gnd
1.0 mF
+
1.0 mF
1.0 mF
+
Clamp diode
1N4001G
or Equiv
Gnd
1N4001G
or Equiv
MC7915
Figure 8. Current Regulator
-20 V
Input
The MC7905, −5.0 V regulator can be used as a constant
current source when connected as above. The output current
is the sum of resistor R current and quiescent bias current as
follows:
IO +
Gnd
*Mounted on heatsink.
Gnd
1.0 mF
1.0 mF
+
-15 V
Output
1N4001G or Equiv
Figure 10. Operational Amplifier Supply
The MC7815 and MC7915 positive and negative
regulators may be connected as shown to obtain a dual
power supply for operational amplifiers. A clamp diode
should be used at the output of the MC7815 to prevent
potential latch−up problems whenever the output of the
positive regulator (MC7815) is drawn below ground with an
output current greater than 200 mA.
5.0 V
) IB
R
The quiescent current for this regulator is typically 4.3
mA. The 5.0 V regulator was chosen to minimize dissipation
and to allow the output voltage to operate to within 6.0 V
below the input voltage.
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9
MC7900 Series
Protection Diodes
Diode D2 prevents output capacitor from discharging thru
the MC7915 during an input short circuit or fast switch off
of power supply.
When external capacitors are used with MC7900 series
regulator it is sometimes necessary to add protection diodes
to prevent the capacitors from discharging through low
current points into the regulator or from output polarity
reversals. Generally, no protection diode is required for
values of output capacitance less then 10mF. Figure 11 shows
the MC7915 with the recommended protection diodes.
• Opposite Polarity Protection
Diode D1 protects the regulator from output polarity
reversals during startup, power off and short-circuit
operation.
• Reverse-bias Protection
Gnd
+
1.0 mF
1.0 mF
Gnd
+
D1
MBRS140
or Equiv
MC7915
-20 V
Input
-15 V
Output
D2
MBRS140
or Equiv
Figure 11. Protection Diodes
DEFINITIONS
JUNCTION‐TO‐AIR (°C/W)
R θ JA, THERMAL RESISTANCE
80
3.5
PD(max) for TA = +50°C
70
3.0
Free Air
Mounted
Vertically
60
Minimum
Size Pad
50
L
40
RqJA
30
0
5.0
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎ
2.0 oz. Copper
L
10
15
20
25
2.5
2.0
1.5
1.0
30
L, LENGTH OF COPPER (mm)
Figure 12. D2PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
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10
PD, MAXIMUM POWER DISSIPATION (W)
Input Bias Current − That part of the input current that
is not delivered to the load.
Output Noise Voltage − The rms AC voltage at the
output, with constant load and no input ripple, measured
over a specified frequency range.
Long Term Stability − Output voltage stability under
accelerated life test conditions with the maximum rated
voltage listed in the devices’ electrical characteristics and
maximum power dissipation.
Line Regulation − The change in output voltage for a
change in the input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that the average chip temperature is not significantly
affected.
Load Regulation − The change in output voltage for a
change in load current at constant chip temperature.
Maximum Power Dissipation − The maximum total
device dissipation for which the regulator will operate
within specifications.
MC7900 Series
ORDERING INFORMATION
Device
MC7905ACD2T
Nominal
Output Voltage
−5.0 V
Output Voltage
Tolerance
Package
Operating
Temperature Range
Shipping†
2%
D2PAK
TJ = 0°C to +125°C
50 Units/Rail
MC7905ACD2TG
D2PAK
(Pb−Free)
50 Units/Rail
MC7905ACD2TR4
D2PAK
800 Tape & Reel
D2PAK
(Pb−Free)
800 Tape & Reel
TO−220
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
MC7905ACD2TR4G
MC7905ACT
MC7905ACTG
D2PAK
4%
MC7905BD2T
TJ = −40°C to +125°C
D2PAK
MC7905BD2TG
50 Units/Rail
50 Units/Rail
(Pb−Free)
MC7905BD2TR4
D2PAK
800 Tape & Reel
MC7905BD2TR4G
D2PAK
800 Tape & Reel
(Pb−Free)
MC7905BT
TO−220
50 Units/Rail
MC7905BTG
TO−220
(Pb−Free)
50 Units/Rail
MC7905CD2T
D2PAK
MC7905CD2TG
D2PAK
TJ = 0°C to +125°C
50 Units/Rail
50 Units/Rail
(Pb−Free)
MC7905CD2TR4
MC7905CD2TR4G
MC7905CT
MC7905CTG
MC7905.2CT
−5.2 V
4%
800 Tape & Reel
D2PAK
(Pb−Free)
800 Tape & Reel
TO−220
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
TO−220
MC7905.2CTG
MC7906CD2T
D2PAK
TJ = 0°C to +125°C
TO−220
(Pb−Free)
−6.0 V
D2PAK
4%
50 Units/Rail
TJ = 0°C to +125°C
D2PAK
MC7906CD2TG
50 Units/Rail
50 Units/Rail
50 Units/Rail
(Pb−Free)
MC7906CT
MC7906CTG
MC7908ACT
−8.0 V
2%
TO−220
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
TO−220
MC7908ACTG
TJ = 0°C to +125°C
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
D2PAK
50 Units/Rail
MC7908CD2TG
D2PAK
(Pb−Free)
50 Units/Rail
MC7908CD2TR4
D2PAK
800 Tape & Reel
D2PAK
(Pb−Free)
800 Tape & Reel
TO−220
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
MC7908CD2T
4%
MC7908CD2TR4G
MC7908CT
MC7908CTG
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11
MC7900 Series
Device
MC7912ACD2T
Nominal
Output Voltage
−12 V
Output Voltage
Tolerance
Package
Operating
Temperature Range
Shipping†
2%
D2PAK
TJ = 0°C to +125°C
50 Units/Rail
MC7912ACD2TG
D2PAK
(Pb−Free)
50 Units/Rail
MC7912ACD2TR4
D2PAK
800 Tape & Reel
D2PAK
(Pb−Free)
800 Tape & Reel
TO−220
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
MC7912ACD2TR4G
MC7912ACT
MC7912ACTG
MC7912BD2T
D2PAK
4%
TJ = −40°C to +125°C
D2PAK
MC7912BD2TG
50 Units/Rail
50 Units/Rail
(Pb−Free)
MC7912BD2TR4
D2PAK
800 Tape & Reel
MC7912BD2TR4G
D2PAK
800 Tape & Reel
(Pb−Free)
MC7912BT
TO−220
50 Units/Rail
MC7912BTG
TO−220
(Pb−Free)
50 Units/Rail
MC7912CD2T
D2PAK
TJ = 0°C to +125°C
50 Units/Rail
MC7912CD2TG
D2PAK
(Pb−Free)
50 Units/Rail
MC7912CD2TR4
D2PAK
800 Tape & Reel
D2PAK
(Pb−Free)
800 Tape & Reel
TO−220
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
MC7912CD2TR4G
MC7912CT
MC7912CTG
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12
MC7900 Series
Device
MC7915ACD2T
Nominal
Output Voltage
− 15 V
Output Voltage
Tolerance
Package
Operating
Temperature Range
Shipping†
2%
D2PAK
TJ = 0°C to +125°C
50 Units/Rail
MC7915ACD2TG
MC7915ACT
MC7915ACTG
50 Units/Rail
TO−220
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
D2PAK
4%
MC7915BD2T
D2PAK
(Pb−Free)
TJ = −40°C to +125°C
D2PAK
MC7915BD2TG
50 Units/Rail
50 Units/Rail
(Pb−Free)
MC7915BT
TO−220
50 Units/Rail
MC7915BTG
TO−220
(Pb−Free)
50 Units/Rail
MC7915BD2TR4G
D2PAK
(Pb−Free)
800 Tape & Reel
MC7915CD2T
D2PAK
MC7915CD2TG
D2PAK
TJ = 0°C to +125°C
50 Units/Rail
50 Units/Rail
(Pb−Free)
MC7915CD2TR4
D2PAK
800 Tape & Reel
MC7915CD2TR4G
D2PAK
800 Tape & Reel
(Pb−Free)
MC7915CT
MC7915CTG
MC7918CT
− 18 V
4%
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
TO−220
MC7918CTG
MC7924BT
TO−220
TJ = 0°C to +125°C
TO−220
(Pb−Free)
− 24 V
4%
TO−220
MC7924BTG
TO−220
(Pb−Free)
MC7924CD2T
D2PAK
MC7924CD2TG
MC7924CT
MC7924CTG
50 Units/Rail
50 Units/Rail
TJ = −40°C to +125°C
50 Units/Rail
50 Units/Rail
TJ = 0°C to +125°C
50 Units/Rail
D2PAK
(Pb−Free)
50 Units/Rail
TO−220
50 Units/Rail
TO−220
(Pb−Free)
50 Units/Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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13
MC7900 Series
MARKING DIAGRAMS
TO−220
T SUFFIX
CASE 221AB
MC
79xxACT
AWLYWWG
MC
7905.2CT
AWLYWWG
MC
79xxBT
AWLYWWG
MC
79xxCT
AWLYWWG
1 2 3
1 2 3
1 2 3
1 2 3
D2PAK
D2T SUFFIX
CASE 936
MC
79xxACD2T
AWLYWWG
MC
79xxBD2T
AWLYWWG
2
1
MC
79xxCD2T
AWLYWWG
2
3
1
xx
A
WL
Y
WW
G
2
3
= Nominal Voltage
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Device
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14
1
3
MC7900 Series
PACKAGE DIMENSIONS
D2PAK
D2T SUFFIX
CASE 936−03
ISSUE D
T
C
A
K
S
B
J
2
ES
DETAIL C
DETAIL C
3
F
G
SIDE VIEW
2X
TOP VIEW
D
0.010 (0.254)
N
M
P
R
C
OPTIONAL
CHAMFER
V
H
1
U
ED
OPTIONAL
CHAMFER
T
TERMINAL 4
L
SIDE VIEW
BOTTOM VIEW
DUAL GAUGE
CONSTRUCTION
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCHES.
3. TAB CONTOUR OPTIONAL WITHIN
DIMENSIONS A AND K.
4. DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 4.
5. DIMENSIONS A AND B DO NOT INCLUDE
MOLD FLASH OR GATE PROTRUSIONS. MOLD
FLASH AND GATE PROTRUSIONS NOT TO
EXCEED 0.025 (0.635) MAXIMUM.
6. SINGLE GAUGE DESIGN WILL BE SHIPPED
AFTER FPCN EXPIRATION IN OCTOBER 2011.
SINGLE GAUGE
CONSTRUCTION
T
M
T
SEATING
PLANE
BOTTOM VIEW
DETAIL C
OPTIONAL CONSTRUCTIONS
SOLDERING FOOTPRINT*
10.490
8.380
16.155
2X
3.504
2X
1.016
5.080
PITCH
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
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15
DIM
A
B
C
D
ED
ES
F
G
H
J
K
L
M
N
P
R
S
U
V
INCHES
MIN
MAX
0.386
0.403
0.356
0.368
0.170
0.180
0.026
0.036
0.045
0.055
0.018
0.026
0.051 REF
0.100 BSC
0.539
0.579
0.125 MAX
0.050 REF
0.000
0.010
0.088
0.102
0.018
0.026
0.058
0.078
5 _ REF
0.116 REF
0.200 MIN
0.250 MIN
MILLIMETERS
MIN
MAX
9.804 10.236
9.042
9.347
4.318
4.572
0.660
0.914
1.143
1.397
0.457
0.660
1.295 REF
2.540 BSC
13.691 14.707
3.175 MAX
1.270 REF
0.000
0.254
2.235
2.591
0.457
0.660
1.473
1.981
5 _ REF
2.946 REF
5.080 MIN
6.350 MIN
MC7900 Series
PACKAGE DIMENSIONS
TO−220, SINGLE GAUGE
T SUFFIX
CASE 221AB
ISSUE A
−T−
B
F
SEATING
PLANE
C
T
S
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCHES.
3. DIMENSION Z DEFINES A ZONE WHERE ALL BODY AND
LEAD IRREGULARITIES ARE ALLOWED.
4. PRODUCT SHIPPED PRIOR TO 2008 HAD DIMENSIONS
S = 0.045 - 0.055 INCHES (1.143 - 1.397 MM)
4
DIM
A
B
C
D
F
G
H
J
K
L
N
Q
R
S
T
U
V
Z
A
Q
U
1 2 3
H
K
Z
L
R
V
J
G
D
N
INCHES
MIN
MAX
0.570
0.620
0.380
0.405
0.160
0.190
0.025
0.035
0.142
0.147
0.095
0.105
0.110
0.155
0.018
0.025
0.500
0.562
0.045
0.060
0.190
0.210
0.100
0.120
0.080
0.110
0.020
0.024
0.235
0.255
0.000
0.050
0.045
----0.080
MILLIMETERS
MIN
MAX
14.48
15.75
9.66
10.28
4.07
4.82
0.64
0.88
3.61
3.73
2.42
2.66
2.80
3.93
0.46
0.64
12.70
14.27
1.15
1.52
4.83
5.33
2.54
3.04
2.04
2.79
0.508
0.61
5.97
6.47
0.00
1.27
1.15
----2.04
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC
reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any
particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without
limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications
and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC
does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for
surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where
personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and
its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly,
any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture
of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
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LITERATURE FULFILLMENT:
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Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
MC7900/D