MC7905ACT [ONSEMI]
1.0 A Negative Voltage Regulators; 1.0负电压稳压器
| 型号： | MC7905ACT |
| 厂家： | 
ONSEMI |
| 描述： | 1.0 A Negative Voltage Regulators |
| 文件： | 总14页 (文件大小：136K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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.
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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.
TO−220
T SUFFIX
CASE 221A
Heatsink surface
connected to Pin 2.
• No External Components Required
1
2
• Internal Thermal Overload Protection
3
• Internal Short Circuit Current Limiting
• Output Transistor Safe−Area Compensation
• Available in 2% Voltage Tolerance (See Ordering Information)
Pin 1. Ground
2. Input
3. Output
• Pb−Free Package May be Available. The G−Suffix Denotes a
2
D PAK
Pb−Free Lead Finish
D2T SUFFIX
CASE 936
1
2
Gnd
3
2.0 k
8.0 k
1.0 k
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
R
1
3.6 k
1.2 k
4.0 k
1.6 k
STANDARD APPLICATION
R
2
MC79XX
Input
Output
C *
0.33 mF
V
O
10 k
in
C **
1.0 mF
O
20 pF
10 pF 10 k
240
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.
20 k 20 k
2.0 k
0.3
1.1 k
750
V
I
XX, These two digits of the type number
indicate nominal voltage.
This device contains 26 active transistors.
** C is required if regulator is located an
in
Figure 1. Representative Schematic Diagram
appreciable distance from power supply filter.
** C improve stability and transient response.
O
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 12 of this data sheet.
Semiconductor Components Industries, LLC, 2004
1
Publication Order Number:
March, 2004 − Rev. 12
MC7900/D
MC7900 Series
MAXIMUM RATINGS (T = +25°C, unless otherwise noted.)
A
Rating
Symbol
Value
Unit
Input Voltage (−5.0 V ≥ V ≥ −18 V)
Input Voltage (24 V)
V
I
−35
−40
Vdc
O
Power Dissipation
Case 221A
T = +25°C
P
q
q
Internally Limited
W
°C/W
°C/W
A
D
JA
JC
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
65
5.0
2
Case 936 (D PAK)
T = +25°C
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
P
q
q
Internally Limited
W
°C/W
°C/W
A
D
JA
JC
70
5.0
Storage Junction Temperature Range
Junction Temperature
T
−65 to +150
+150
°C
°C
stg
T
J
THERMAL CHARACTERISTICS
Characteristics
Symbol
Max
65
Unit
°C/W
°C/W
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
R
q
JA
JC
R
5.0
q
MC7905B, MC7905C
ELECTRICAL CHARACTERISTICS (V = −10 V, I = 500 mA, Tlow* < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−4.8
−5.0
−5.2
J
Line Regulation (Note 1)
Reg
line
(T = +25°C, I = 100 mA)
J
O
−7.0 Vdc ≥ V ≥ −25 Vdc
−
−
7.0
2.0
50
25
I
−8.0 Vdc ≥ V ≥ −12 Vdc
I
(T = +25°C, I = 500 mA)
J
O
−7.0 Vdc ≥ V ≥ −25 Vdc
−
−
35
8.0
100
50
I
−8.0 Vdc ≥ V ≥ −12 Vdc
I
Load Regulation, T = +25°C (Note 1)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
−
−
11
4.0
100
50
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
V
O
Vdc
−7.0 Vdc ≥ V ≥ −20 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−ꢀ4.75
−
−ꢀ5.25
I
O
Input Bias Current (T = +25°C)
I
−
4.3
8.0
mA
mA
J
IB
Input Bias Current Change
DI
IB
−7.0 Vdc ≥ V ≥ −25 Vdc
−
−
−
−
1.3
0.5
I
5.0 mA ≤ I ≤ 1.5 A
O
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
40
70
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage
Vdc
I
O
I
O
= 1.0 A, T = +25°C
−
2.0
−
J
Average Temperature Coefficient of Output Voltage
= 5.0 mA, Tlow* ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
*Tlow = −40°C for MC7905B and Tlow = 0°C for MC7905C.
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2
MC7900 Series
MC7905AC
ELECTRICAL CHARACTERISTICS (V = −10 V, I = 500 mA, 0°C < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−4.9
−5.0
−5.1
J
Line Regulation (Note 2)
Reg
line
−8.0 Vdc ≥ V ≥ −12 Vdc; I = 1.0 A, T = +25°C
−
−
−
−
2.0
7.0
7.0
6.0
25
50
50
50
I
O
J
−8.0 Vdc ≥ V ≥ −12 Vdc; I = 1.0 A
I
O
−7.5 Vdc ≥ V ≥ −25 Vdc; I = 500 mA
I
O
−7.0 Vdc ≥ V ≥ −20 Vdc; I = 1.0 A, T = +25°C
I
O
J
Load Regulation (Note 2)
Reg
mV
load
5.0 mA ≤ I ≤ 1.5 A, T = +25°C
−
−
−
11
4.0
9.0
100
50
100
O
J
250 mA ≤ I ≤ 750 mA
O
5.0 mA ≤ I ≤ 1.0 A
O
Output Voltage
V
O
Vdc
−7.5 Vdc ≥ V ≥ −20 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−4.80
−
−
−5.20
8.0
I
O
Input Bias Current
I
IB
4.4
mA
mA
Input Bias Current Change
DI
IB
−7.5 Vdc ≥ V ≥ −25 Vdc
−
−
−
−
−
−
1.3
0.5
0.5
I
5.0 mA ≤ I ≤ 1.0 A
O
5.0 mA ≤ I ≤ 1.5 A, T = +25°C
O
J
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
40
70
−
−
−
mV
dB
A
n
Ripple Rejection (I = mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A. T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 A, 0°C ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
MC7905.2C
ELECTRICAL CHARACTERISTICS (V = −10 V, I = 500 mA, 0°C < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−5.0
−5.2
−5.4
J
Line Regulation (Note 2)
Reg
line
(T = +25°C, I = 100 mA)
J
O
−7.2 Vdc ≥ V ≥ −25 Vdc
−
−
8.0
2.2
52
27
I
−8.0 Vdc ≥ V ≥ −12 Vdc
I
(T = +25°C, I = 500 mA)
J
O
−7.2 Vdc ≥ V ≥ −25 Vdc
−
−
37
8.5
105
52
I
−8.0 Vdc ≥ V ≥ −12 Vdc
I
Load Regulation, T = +25°C (Note 2)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
−
−
12
4.5
105
52
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
V
O
Vdc
−7.2 Vdc ≥ V ≥ −20 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−4.95
−
−
−5.45
8.0
I
O
Input Bias Current (T = +25°C)
I
IB
4.3
mA
mA
J
Input Bias Current Change
DI
IB
−7.2 Vdc ≥ V ≥ −25 Vdc
−
−
−
−
1.3
0.5
I
5.0 mA ≤ I ≤ 1.5 A
O
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
42
68
−
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A, T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 mA, 0°C ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
2. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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3
MC7900 Series
MC7906C
ELECTRICAL CHARACTERISTICS (V = −11 V, I = 500 mA, 0°C < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−5.75
−6.0
−6.25
J
Line Regulation (Note 3)
Reg
line
(T = +25°C, I = 100 mA)
J
O
−8.0 Vdc ≥ V ≥ −25 Vdc
−
−
9.0
3.0
60
30
I
−9.0 Vdc ≥ V ≥ −13 Vdc
I
(T = +25°C, I = 500 mA)
J
O
−8.0 Vdc ≥ V ≥ −25 Vdc
−
−
43
10
120
60
I
−9.0 Vdc ≥ V ≥ −13 Vdc
I
Load Regulation, T = +25°C (Note 3)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
−
−
13
5.0
120
60
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
V
O
Vdc
−8.0 Vdc ≥ V ≥ −21 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−5.7
−
−
−6.3
8.0
I
O
Input Bias Current (T = +25°C)
I
IB
4.3
mA
mA
J
Input Bias Current Change
DI
IB
−8.0 Vdc ≥ V ≥ −25 Vdc
−
−
−
−
1.3
0.5
I
5.0 mA ≤ I ≤ 1.5 A
O
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
45
65
−
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A, T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 A, 0°C ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
MC7908C
ELECTRICAL CHARACTERISTICS (V = −14 V, I = 500 mA, 0°C < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−7.7
−8.0
−8.3
J
Line Regulation (Note 3)
Reg
line
(T = +25°C, I = 100 mA)
J
O
−10.5 Vdc ≥ V ≥ −25 Vdc
−
−
12
5.0
80
40
I
−11 Vdc ≥ V ≥ −17 Vdc
I
(T = +25°C, I = 500 mA)
J
O
−10.5 Vdc ≥ V ≥ −25 Vdc
−
−
50
22
160
80
I
−11 Vdc ≥ V ≥ −17 Vdc
I
Load Regulation, T = +25°C (Note 3)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
−
−
26
9.0
160
80
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
V
O
Vdc
−10.5 Vdc ≥ V ≥ −23 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−7.6
−
−
−8.4
8.0
I
O
Input Bias Current (T = +25°C)
I
IB
4.3
mA
mA
J
Input Bias Current Change
DI
IB
−10.5 Vdc ≥ V ≥ −25 Vdc
−
−
−
−
1.0
0.5
I
5.0 mA ≤ I ≤ 1.5 A
O
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
52
62
−
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A, T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 mA, 0°C ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
3. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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4
MC7900 Series
MC7912B, MC7912C
ELECTRICAL CHARACTERISTICS (V = −19 V, I = 500 mA, Tlow* < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−11.5
−12
−12.5
J
Line Regulation (Note 4)
Reg
line
(T = +25°C, I = 100 mA)
J
O
−14.5 Vdc ≥ V ≥ −30 Vdc
−
−
13
6.0
120
60
I
−16 Vdc ≥ V ≥ −22 Vdc
I
(T = +25°C, I = 500 mA)
J
O
−14.5 Vdc ≥ V ≥ −30 Vdc
−
−
55
24
240
120
I
−16 Vdc ≥ V ≥ −22 Vdc
I
Load Regulation, T = +25°C (Note 4)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
−
−
46
17
240
120
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
V
O
Vdc
−14.5 Vdc ≥ V ≥ −27 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−11.4
−
−
−12.6
8.0
I
O
Input Bias Current (T = +25°C)
I
IB
4.4
mA
mA
J
Input Bias Current Change
DI
IB
−14.5 Vdc ≥ V ≥ −30 Vdc
−
−
−
−
1.0
0.5
I
5.0 mA ≤ I ≤ 1.5 A
O
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
75
61
−
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A, T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 mA, Tlow* ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
MC7912AC
ELECTRICAL CHARACTERISTICS (V = −19 V, I = 500 mA, Tlow* < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−11.75
−12
−12.25
J
Line Regulation (Note 4)
Reg
line
−16 Vdc ≥ V ≥ −22 Vdc; I = 1.0 A, T = +25°C
−
−
−
−
6.0
24
24
13
60
I
O
J
−16 Vdc ≥ V ≥ −22 Vdc; I = 1.0 A
120
120
120
I
O
−14.8 Vdc ≥ V ≥ −30 Vdc; I = 500 mA
I
O
−14.5 Vdc ≥ V ≥ −27 Vdc; I = 1.0 A, T = +25°C
I
O
J
Load Regulation (Note 4)
Reg
mV
load
5.0 mA ≤ I ≤ 1.5 A, T = +25°C
−
−
−
46
17
35
150
75
150
O
J
250 mA ≤ I ≤ 750 mA
O
5.0 mA ≤ I ≤ 1.0 A
O
Output Voltage
V
O
Vdc
−14.8 Vdc ≥ V ≥ −27 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−11.5
−
−
−12.5
8.0
I
O
Input Bias Current
I
IB
4.4
mA
mA
Input Bias Current Change
DI
IB
−15 Vdc ≥ V ≥ −30 Vdc
−
−
−
−
−
−
0.8
0.5
0.5
I
5.0 mA ≤ I ≤ 1.0 A
O
5.0 mA ≤ I ≤ 1.5 A, T = +25°C
O
J
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
75
61
−
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A, T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 A, Tlow* ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
4. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
*Tlow = −40°C for MC7912B and Tlow = 0°C for MC7912C.
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5
MC7900 Series
MC7915B, MC7915C
ELECTRICAL CHARACTERISTICS (V = −23 V, I = 500 mA, Tlow* < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−14.4
−15
−15.6
J
Line Regulation (Note 5)
Reg
line
(T = +25°C, I = 100 mA)
J
O
−17.5 Vdc ≥ V ≥ −30 Vdc
−
−
14
6.0
150
75
I
−20 Vdc ≥ V ≥ −26 Vdc
I
(T = +25°C, I = 500 mA)
J
O
−17.5 Vdc ≥ V ≥ −30 Vdc
−
−
57
27
300
150
I
−20 Vdc ≥ V ≥ −26 Vdc
I
Load Regulation, T = +25°C (Note 5)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
−
−
68
25
300
150
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
V
O
Vdc
−17.5 Vdc ≥ V ≥ −30 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−14.25
−
−
−15.75
8.0
I
O
Input Bias Current (T = +25°C)
I
IB
4.4
mA
mA
J
Input Bias Current Change
DI
IB
−17.5 Vdc ≥ V ≥ −30 Vdc
−
−
−
−
1.0
0.5
I
5.0 mA ≤ I ≤ 1.5 A
O
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
90
60
−
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A, T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 A, Tlow* ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
MC7915AC
ELECTRICAL CHARACTERISTICS (V = −23 V, I = 500 mA, Tlow* < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−14.7
−15
−15.3
J
Line Regulation (Note 5)
Reg
line
−20 Vdc ≥ V ≥ −26 Vdc, I = 1.0 A, T = +25°C
−
−
−
−
27
57
57
57
75
I
O
J
−20 Vdc ≥ V ≥ −26 Vdc, I = 1.0 A,
150
150
150
I
O
−17.9 Vdc ≥ V ≥ −30 Vdc, I = 500 mA
I
O
−17.5 Vdc ≥ V ≥ −30 Vdc, I = 1.0 A, T = +25°C
I
O
J
Load Regulation (Note 5)
Reg
mV
load
5.0 mA ≤ I ≤ 1.5 A, T = +25°C
−
−
−
68
25
40
150
75
150
O
J
250 mA ≤ I ≤ 750 mA
O
5.0 mA ≤ I ≤ 1.0 A
O
Output Voltage
V
O
Vdc
−17.9 Vdc ≥ V ≥ −30 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−14.4
−
−
−15.6
8.0
I
O
Input Bias Current
I
IB
4.4
mA
mA
Input Bias Current Change
DI
IB
−17.5 Vdc ≥ V ≥ −30 Vdc
−
−
−
−
−
−
0.8
0.5
0.5
I
5.0 mA ≤ I ≤ 1.0 A
O
5.0 mA ≤ I ≤ 1.5 A, T = +25°C
O
J
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
90
60
−
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A, T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 mA, Tlow* ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
5. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
*Tlow = −40°C for MC7915B and Tlow = 0°C for MC7915C.
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6
MC7900 Series
MC7918C
ELECTRICAL CHARACTERISTICS (V = −27 V, I = 500 mA, 0°C < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−17.3
−18
−18.7
J
Line Regulation (Note 6)
Reg
line
(T = +25°C, I = 100 mA)
J
O
−21 Vdc ≥ V ≥ −33 Vdc
−
−
25
10
180
90
I
−24 Vdc ≥ V ≥ −30 Vdc
I
(T = +25°C, I = 500 mA)
J
O
−21 Vdc ≥ V ≥ −33 Vdc
−
−
90
50
360
180
I
−24 Vdc ≥ V ≥ −30 Vdc
I
Load Regulation, T = +25°C (Note 6)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
−
−
110
55
360
180
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
V
O
Vdc
−21 Vdc ≥ V ≥ −33 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−17.1
−
−
−18.9
8.0
I
O
Input Bias Current (T = +25°C)
I
IB
4.5
mA
mA
J
Input Bias Current Change
DI
IB
−21 Vdc ≥ V ≥ −33 Vdc
−
−
−
−
1.0
0.5
I
5.0 mA ≤ I ≤ 1.5 A
O
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
110
59
−
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A, T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 mA, 0°C ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
MC7924B, MC7924C
ELECTRICAL CHARACTERISTICS (V = −33 V, I = 500 mA, Tlow* < T < +125°C, unless otherwise noted.)
I
O
J
Characteristics
Symbol
Min
Typ
Max
Unit
Vdc
mV
Output Voltage (T = +25°C)
V
O
−23
−24
−25
J
Line Regulation (Note 6)
Reg
line
(T = +25°C, I = 100 mA)
J
O
−27 Vdc ≥ V ≥ −38 Vdc
−
−
31
14
240
120
I
−30 Vdc ≥ V ≥ −36 Vdc
I
(T = +25°C, I = 500 mA)
J
O
−27 Vdc ≥ V ≥ −38 Vdc
−
−
118
70
470
240
I
−30 Vdc ≥ V ≥ −36 Vdc
I
Load Regulation, T = +25°C (Note 6)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
−
−
150
85
480
240
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
V
O
Vdc
−27 Vdc ≥ V ≥ −38 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
−22.8
−
−
−25.2
8.0
I
O
Input Bias Current (T = +25°C)
I
IB
4.6
mA
mA
J
Input Bias Current Change
DI
IB
−27 Vdc ≥ V ≥ −38 Vdc
−
−
−
−
1.0
0.5
I
5.0 mA ≤ I ≤ 1.5 A
O
Output Noise Voltage (T = +25°C, 10 Hz ≤ f ≤ 100 kHz)
V
−
−
−
170
56
−
−
−
mV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
RR
V −V
O
Dropout Voltage (I = 1.0 A, T = +25°C)
2.0
Vdc
O
J
I
O
Average Temperature Coefficient of Output Voltage
= 5.0 mA, Tlow* ≤ T ≤ +125°C
DV /DT
mV/°C
O
I
O
−
−1.0
−
J
6. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
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
2.5
2.0
1.5
1.0
0.5
0
Infinite Heatsink
q
= 5°C/W
HS
5.0
4.0
3.0
T = +25°C
J
q
= 15°C/W
HS
2.0
No Heatsink
1.0
0.5
0.4
0.3
0.2
q
q
= 5° C/W
JC
JA
= 65° C/W
P (max) = 15W
D
0.1
0
3.0 6.0 9.0
12
15
18 21
24
27
30
25
50
75
100
125
150
T , AMBIENT TEMPERATURE (°C)
A
|V −V | INPUT−OUTPUT VOLTAGE DIFFERENTIAL (V)
I
O
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
100
80
70
60
50
40
V
V
= −11 V
= −ꢀ6.0 V
in
O
f = 120 Hz
80
60
40
20
0
I = 20 mA
O
I
O
= 20 mA
DV = 1.0 V(RMS)
in
10
100
1.0 k
10 k
100 k
2.0 4.0 6.0
8.0
10
12
14
16
18
20
22
f, FREQUENCY (Hz)
V , OUTPUT VOLTAGE (V)
O
Figure 4. Ripple Rejection as a
Function of Frequency
Figure 5. Ripple Rejection as a Function
of Output Voltage
6.26
6.22
6.18
6.14
6.10
6.06
5.2
5.0
4.8
V
V
= −11 V
= −ꢀ6.0 V
= 20 mA
in
4.6
4.4
4.2
O
V
V
= −11 V
= −ꢀ6.0 V
= 20 mA
in
D
I
O
I
O
0
25
50
75
100
125
−25
0
25
50
75
100
125
150
175
T , JUNCTION TEMPERATURE (°C)
J
T , JUNCTION TEMPERATURE (°C)
J
Figure 6. Output Voltage as a Function
of Junction Temperature
Figure 7. Quiescent Current as a
Function of Temperature
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8
MC7900 Series
APPLICATIONS INFORMATION
Design Considerations
used to minimize ground loops and lead resistance drops
since the regulator has no external sense lead. Bypassing the
output is also recommended.
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
−20 V
Input
I
= 200 mA
O
10
R
MC7905
−
V
≤ 10 V
O
1.0 mF
1.0 mF
+
+
Gnd
Gnd
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.
5.0 V
I
O
=
+ I
B
R
The quiescent current for this regulator is typically 4.3 mA. The 5.0ꢁV regulator was
chosen to minimize dissipation and to allow the output voltage to operate to within
6.0 V below the input voltage.
Figure 8. Current Regulator
−ꢀ5.0 V
Output
−10 V
Input
0.56
0.56
0.56
+20 V
Input
+15 V
Output
2N3055*
or Equiv
MC7815
+
+
+
1N4001
or Equiv
Gnd
0.33 mF
1.0 mF
1.0 mF
1.0 mF
MJE200*
or Equiv
Gnd
+
MC7905*
1.0 mF
MC7915
5.6
1.0 mF
1.0 mF
Gnd
−ꢀ20 V
Input
−15 V
Output
10 mF
+
+
+
Gnd
*Mounted on heatsink.
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.
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/R . Operation
SC
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.
Figure 9. Current Boost Regulator
Figure 10. Operational Amplifier Supply
(−5.0 V @ 4.0 A, with 5.0 A Current Limiting)
(±15 @ 1.0 A)
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9
MC7900 Series
80
70
3.5
3.0
P
for T = +50°C
A
D(max)
Free Air
Mounted
Vertically
2.0 oz. Copper
60
50
40
30
2.5
2.0
1.5
1.0
L
Minimum
Size Pad
L
R
q
JA
0
5.0
10
15
20
25
30
L, LENGTH OF COPPER (mm)
Figure 11. D2PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
DEFINITIONS
Line Regulation − The change in output voltage for a
Input Bias Current − That part of the input current that
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.
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.
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.
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.
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10
MC7900 Series
ORDERING INFORMATION
Output Voltage
Nominal
Output Voltage
Operating
Temperature Range
†
Tolerance
2%
2%
4%
4%
2%
4%
4%
4%
4%
4%
4%
4%
4%
4%
2%
4%
4%
2%
2%
4%
4%
2%
4%
4%
4%
4%
2%
4%
4%
2%
4%
4%
4%
4%
4%
4%
4%
Device
MC7905ACD2T
MC7905ACD2TR4
MC7905CD2T
MC7905CD2TR4
MC7905ACT
MC7905CT
Package
Shipping
2
D PAK
50 Units/Rail
800 Tape & Reel
50 Units/Rail
800 Tape & Reel
50 Units/Rail
50 Units/Rail
50 Units/Rail
800 Tape & Reel
50 Units/Rail
50 Units/Rail
50 Units/Rail
50 Units/Rail
50 Units/Rail
800 Tape & Reel
50 Units/Rail
50 Units/Rail
50 Units/Rail
50 Units/Rail
800 Tape & Reel
50 Units/Rail
800 Tape & Reel
50 Units/Rail
50 Units/Rail
50 Units/Rail
800 Tape & Reel
50 Units/Rail
50 Units/Rail
50 Units/Rail
800 Tape & Reel
50 Units/Rail
50 Units/Rail
50 Units/Rail
50 Units/Rail
50 Units/Rail
50 Units/Rail
50 Units/Rail
50 Units/Rail
2
D PAK
2
D PAK
T = 0° to +125°C
J
2
D PAK
TO−220
TO−220
5.0 V
2
MC7905BD2T
MC7905BD2TR4
MC7905BT
D PAK
2
D PAK
T = −40° to +125°C
J
TO−220
TO−220
MC7905.2CT
MC7906CD2T
MC7906CT
5.2 V
6.0 V
2
D PAK
TO−220
2
MC7908CD2T
MC7908CD2TR4
MC7908ACT
MC7908CT
D PAK
T = 0° to +125°C
J
2
D PAK
TO−220
TO−220
TO−220
8.0 V
MC7908CTG
MC7912ACD2T
MC7912ACD2TR4
MC7912CD2T
MC7912CD2TR4
MC7912ACT
MC7912CT
2
D PAK
2
D PAK
2
D PAK
T = 0° to +125°C
J
2
D PAK
TO−220
TO−220
12 V
2
MC7912BD2T
MC7912BD2TR4
MC7912BT
D PAK
2
D PAK
T = −40° to +125°C
J
TO−220
2
MC7915ACD2T
MC7915CD2T
MC7915CD2TR4
MC7915ACT
MC7915CT
D PAK
2
D PAK
2
D PAK
T = 0° to +125°C
J
TO−220
TO−220
15 V
2
MC7915BD2T
MC7915BT
D PAK
T = −40° to +125°C
J
TO−220
TO−220
MC7918CT
18 V
24 V
2
MC7924CD2T
MC7924CT
D PAK
T = 0° to +125°C
J
TO−220
TO−220
MC7924BT
T = −40° to +125°C
J
†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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11
MC7900 Series
MARKING DIAGRAMS
TO−220
T SUFFIX
CASE 221A
MC
MC
MC
MC
79xxACT
AWLYWW
7905.2CT
AWLYWW
79xxBT
AWLYWW
79xxCT
AWLYWW
1 2
3
1 2
3
1 2
3
1 2 3
2
D PAK
D2T SUFFIX
CASE 936
MC
MC
MC
79xxACD2T
AWLYWW
79xxBD2T
AWLYWW
79xxCD2T
AWLYWW
2
2
2
1
3
1
3
1
3
xx = Nominal Voltage
= Assembly Location
WL = Wafer Lot
= Year
A
Y
WW = Work Week
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12
MC7900 Series
PACKAGE DIMENSIONS
D2PAK
D2T SUFFIX
PLASTIC PACKAGE
CASE 936−03
ISSUE B
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
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.
TERMINAL 4
−T−
OPTIONAL
CHAMFER
K
E
A
U
S
V
B
H
F
INCHES
DIM MIN MAX
MILLIMETERS
MIN MAX
9.804 10.236
1
2
3
M
L
A
B
C
D
E
F
0.386
0.356
0.170
0.026
0.045
0.403
0.368
0.180
0.036
0.055
9.042
4.318
0.660
1.143
9.347
4.572
0.914
1.397
J
D
P
N
G
M
0.051 REF
0.100 BSC
0.539 0.579 13.691 14.707
0.125 MAX
0.050 REF
0.000
0.088
0.018
0.058
1.295 REF
2.540 BSC
0.010 (0.254)
T
R
G
H
J
3.175 MAX
1.270 REF
K
L
0.010
0.102
0.026
0.078
0.000
0.254
2.591
0.660
1.981
M
N
P
R
S
U
V
2.235
0.457
1.473
C
5_REF
5_REF
0.116 REF
0.200 MIN
0.250 MIN
2.946 REF
5.080 MIN
6.350 MIN
SOLDERING FOOTPRINT*
8.38
0.33
1.016
0.04
10.66
0.42
5.08
0.20
3.05
0.12
17.02
0.67
mm
inches
ǒ
Ǔ
SCALE 3:1
2
D PAK−3
*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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13
MC7900 Series
PACKAGE DIMENSIONS
TO−220−3
T SUFFIX
PLASTIC PACKAGE
CASE 221A−09
ISSUE AA
NOTES:
SEATING
PLANE
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
−T−
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION Z DEFINES A ZONE WHERE ALL
BODY AND LEAD IRREGULARITIES ARE
ALLOWED.
C
S
B
F
T
4
1
INCHES
DIM MIN MAX
MILLIMETERS
MIN
14.48
9.66
4.07
0.64
3.61
2.42
2.80
0.46
12.70
1.15
4.83
2.54
2.04
1.15
5.97
0.00
1.15
−−−
MAX
15.75
10.28
4.82
0.88
3.73
2.66
3.93
0.64
14.27
1.52
5.33
3.04
2.79
1.39
6.47
1.27
−−−
A
K
Q
Z
A
B
C
D
F
0.570
0.380
0.160
0.025
0.142
0.095
0.110
0.018
0.500
0.045
0.190
0.100
0.080
0.045
0.235
0.000
0.045
−−−
0.620
0.405
0.190
0.035
0.147
0.105
0.155
0.025
0.562
0.060
0.210
0.120
0.110
0.055
0.255
0.050
−−−
2
3
U
H
G
H
J
K
L
L
R
J
N
Q
R
S
T
V
G
D
U
V
Z
N
0.080
2.04
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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.
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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
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MC7900/D
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