MC7905.2CTS [MOTOROLA]
Regulator, 1 Output, BIPolar,;
| 型号： | MC7905.2CTS |
| 厂家： | 
MOTOROLA |
| 描述： | Regulator, 1 Output, BIPolar, 稳压器 |
| 文件： | 总12页 (文件大小：190K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Order this document by MC7900/D
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.
THREE–TERMINAL
NEGATIVE FIXED
VOLTAGE REGULATORS
T SUFFIX
PLASTIC PACKAGE
CASE 221A
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
Heatsink surface
connected to Pin 2.
• Output Transistor Safe–Area Compensation
• Available in 2% Voltage Tolerance (See Ordering Information)
1
2
3
Pin 1. Ground
2. Input
3. Output
Representative Schematic Diagram
Gnd
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
2.0 k
8.0 k
1.0 k
2
(D PAK)
2
1
R
R
3.6 k
1.2 k
4.0 k
1
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
1.6 k
2
V
10 k
O
STANDARD APPLICATION
20 pF
MC79XX
Input
Output
10 pF 10 k
240
C
*
in
C
1.0
**
µ
O
0.33 µF
20 k
20 k
2.0 k
F
0.3
1.1 k
750
V
I
This device contains 26 active transistors.
Acommongroundisrequiredbetweentheinput
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.
ORDERING INFORMATION
Output Voltage
Tolerance
Operating
Temperature Range
XX, These two digits of the type number
indicate nominal voltage.
Device
Package
** C is required if regulator is located an
appreciable distance from power supply filter.
** C improve stability and transient response.
O
MC79XXACD2T
MC79XXCD2T
MC79XXACT
MC79XXCT
2%
4%
2%
4%
in
Surface Mount
Insertion Mount
T = 0° to +125°C
J
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
MC79XXBD2T
MC79XXBT
Surface Mount
Insertion Mount
4%
T = –40° to +125°C
J
MC7905
MC7905.2
MC7906
MC7908
5.0 V
5.2 V
6.0 V
8.0 V
MC7912
MC7915
MC7918
MC7924
12 V
15 V
28 V
24 V
XX indicates nominal voltage.
Motorola, Inc. 1996
Rev 6
MC7900
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
A
= +25°C
P
D
Internally Limited
W
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
θ
θ
65
5.0
°C/W
°C/W
JA
JC
2
Case 936 (D PAK)
= +25°C
T
P
θ
θ
Internally Limited
W
°C/W
°C/W
A
D
JA
JC
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
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
θJA
θJC
R
5.0
MC7905C
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
–4.8
–5.0
–5.2
J
Line Regulation (Note 1)
(T = +25°C, I = 100 mA)
Reg
line
J
O
I
I
O
I
I
–7.0 Vdc ≥ V ≥ –25 Vdc
–
–
7.0
2.0
50
25
–8.0 Vdc ≥ V ≥ –12 Vdc
(T = +25°C, I = 500 mA)
J
–7.0 Vdc ≥ V ≥ –25 Vdc
–
–
35
8.0
100
50
–8.0 Vdc ≥ V ≥ –12 Vdc
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
–7.0 Vdc ≥ V ≥ –20 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
V
Vdc
O
–4.75
–
–
–5.25
8.0
I
O
Input Bias Current (T = +25°C)
I
IB
4.3
mA
mA
J
Input Bias Current Change
–7.0 Vdc ≥ V ≥ –25 Vdc
∆I
IB
–
–
–
–
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
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, 0°C ≤ T ≤ +125°C
∆V /∆T
mV/°C
O
I
O
–
–1.0
–
J
NOTE: 1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account separately.
O
NOTE: 1. Pulse testing with low duty cycle is used.
2
MOTOROLA ANALOG IC DEVICE DATA
MC7900
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 1)
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 1)
Reg
mV
load
5.0 mA ≤ I ≤ 1.5 A, T = +25°C
–
–
–
11
4.0
9.0
100
50
100
O
O
J
250 mA ≤ I ≤ 750 mA
5.0 mA ≤ I ≤ 1.0 A
O
Output Voltage
–7.5 Vdc ≥ V ≥ –20 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
V
Vdc
O
–4.80
–
–
–5.20
8.0
I
O
Input Bias Current
I
IB
4.4
mA
mA
Input Bias Current Change
–7.5 Vdc ≥ V ≥ –25 Vdc
∆I
IB
–
–
–
–
–
–
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
–
–
µV
dB
A
n
Ripple Rejection (I = mA, f = 120 Hz)
O
RR
V –V
Dropout Voltage
Vdc
I
O
I
O
= 1.0 A. T = +25°C
–
–
2.0
–
–
J
Average Temperature Coefficient of Output Voltage
= 5.0 A, 0°C ≤ T ≤ +125°C
∆V /∆T
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 1)
(T = +25°C, I = 100 mA)
Reg
line
J
O
I
I
O
I
I
–7.2 Vdc ≥ V ≥ –25 Vdc
–
–
8.0
2.2
52
27
–8.0 Vdc ≥ V ≥ –12 Vdc
(T = +25°C, I = 500 mA)
J
–7.2 Vdc ≥ V ≥ –25 Vdc
–
–
37
8.5
105
52
–8.0 Vdc ≥ V ≥ –12 Vdc
Load Regulation, T = +25°C (Note 1)
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
–7.2 Vdc ≥ V ≥ –20 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
V
Vdc
O
–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
–7.2 Vdc ≥ V ≥ –25 Vdc
∆I
IB
–
–
–
–
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
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, 0°C ≤ T ≤ +125°C
∆V /∆T
mV/°C
O
I
O
–
–1.0
–
J
NOTE: 1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account separately.
O
NOTE: 1. Pulse testing with low duty cycle is used.
3
MOTOROLA ANALOG IC DEVICE DATA
MC7900
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 1)
(T = +25°C, I = 100 mA)
Reg
line
J
O
I
I
O
I
I
–8.0 Vdc ≥ V ≥ –25 Vdc
–
–
9.0
3.0
60
30
–9.0 Vdc ≥ V ≥ –13 Vdc
(T = +25°C, I = 500 mA)
J
–8.0 Vdc ≥ V ≥ –25 Vdc
–
–
43
10
120
60
–9.0 Vdc ≥ V ≥ –13 Vdc
Load Regulation, T = +25°C (Note 1)
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
–8.0 Vdc ≥ V ≥ –21 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
V
Vdc
O
–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
–8.0 Vdc ≥ V ≥ –25 Vdc
∆I
IB
–
–
–
–
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
Dropout Voltage
Vdc
I
O
I
O
= 1.0 A, T = +25°C
–
–
2.0
–
–
J
Average Temperature Coefficient of Output Voltage
= 5.0 A, 0°C ≤ T ≤ +125°C
∆V /∆T
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 1)
(T = +25°C, I = 100 mA)
Reg
line
J
O
–10.5 Vdc ≥ V ≥ –25 Vdc
–
–
12
5.0
80
40
I
–11 Vdc ≥ V ≥ –17 Vdc
I
O
(T = +25°C, I = 500 mA)
J
–10.5 Vdc ≥ V ≥ –25 Vdc
–
–
50
22
160
80
I
–11 Vdc ≥ V ≥ –17 Vdc
I
Load Regulation, T = +25°C (Note 1)
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
–10.5 Vdc ≥ V ≥ –23 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
V
Vdc
O
–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
–10.5 Vdc ≥ V ≥ –25 Vdc
∆I
IB
–
–
–
–
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
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, 0°C ≤ T ≤ +125°C
∆V /∆T
mV/°C
O
I
O
–
–1.0
–
J
NOTE: 1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account separately.
O
NOTE: 1. Pulse testing with low duty cycle is used.
4
MOTOROLA ANALOG IC DEVICE DATA
MC7900
MC7912C
ELECTRICAL CHARACTERISTICS (V = –19 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
–11.5
–12
–12.5
J
Line Regulation (Note 1)
(T = +25°C, I = 100 mA)
Reg
line
J
O
–14.5 Vdc ≥ V ≥ –30 Vdc
–
–
13
6.0
120
60
I
–16 Vdc ≥ V ≥ –22 Vdc
I
O
(T = +25°C, I = 500 mA)
J
–14.5 Vdc ≥ V ≥ –30 Vdc
–
–
55
24
240
120
I
–16 Vdc ≥ V ≥ –22 Vdc
I
Load Regulation, T = +25°C (Note 1)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
–
–
46
17
240
120
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
–14.5 Vdc ≥ V ≥ –27 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
V
Vdc
O
–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
–14.5 Vdc ≥ V ≥ –30 Vdc
∆I
IB
–
–
–
–
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
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, 0°C ≤ T ≤ +125°C
∆V /∆T
mV/°C
O
I
O
–1.0
J
MC7912AC
ELECTRICAL CHARACTERISTICS (V = –19 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
–11.75
–12
–12.25
J
Line Regulation (Note 1)
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
I
O
O
–14.5 Vdc ≥ V ≥ –27 Vdc; I = 1.0 A, T = +25°C
J
Load Regulation (Note 1)
Reg
mV
load
5.0 mA ≤ I ≤ 1.5 A, T = +25°C
–
–
–
46
17
35
150
75
150
O
O
J
250 mA ≤ I ≤ 750 mA
5.0 mA ≤ I ≤ 1.0 A
O
Output Voltage
–14.8 Vdc ≥ V ≥ –27 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
V
Vdc
O
–11.5
–
–
–12.5
8.0
I
O
Input Bias Current
I
IB
4.4
mA
mA
Input Bias Current Change
∆I
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
Dropout Voltage
Vdc
I
O
I
O
= 1.0 A, T = +25°C
–
2.0
–
J
Average Temperature Coefficient of Output Voltage
= 5.0 A, 0°C ≤ T ≤ +125°C
∆V /∆T
mV/°C
O
I
O
–
–1.0
–
J
NOTE: 1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account separately.
O
NOTE: 1. Pulse testing with low duty cycle is used.
5
MOTOROLA ANALOG IC DEVICE DATA
MC7900
MC7915C
ELECTRICAL CHARACTERISTICS (V = –23 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
–14.4
–15
–15.6
J
Line Regulation (Note 1)
(T = +25°C, I = 100 mA)
Reg
line
J
O
–17.5 Vdc ≥ V ≥ –30 Vdc
–
–
14
6.0
150
75
I
–20 Vdc ≥ V ≥ –26 Vdc
I
O
(T = +25°C, I = 500 mA)
J
–17.5 Vdc ≥ V ≥ –30 Vdc
–
–
57
27
300
150
I
–20 Vdc ≥ V ≥ –26 Vdc
I
Load Regulation, T = +25°C (Note 1)
Reg
mV
J
load
5.0 mA ≤ I ≤ 1.5 A
–
–
68
25
300
150
O
250 mA ≤ I ≤ 750 mA
O
Output Voltage
–17.5 Vdc ≥ V ≥ –30 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
V
Vdc
O
–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
–17.5 Vdc ≥ V ≥ –30 Vdc
∆I
IB
–
–
–
–
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
Dropout Voltage
Vdc
I
O
I
O
= 1.0 A, T = +25°C
–
–
2.0
–
–
J
Average Temperature Coefficient of Output Voltage
= 5.0 A, 0°C ≤ T ≤ +125°C
∆V /∆T
mV/°C
O
I
O
–1.0
J
MC7915AC
ELECTRICAL CHARACTERISTICS (V = –23 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
–14.7
–15
–15.3
J
Line Regulation (Note 1)
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
I
O
O
–17.5 Vdc ≥ V ≥ –30 Vdc, I = 1.0 A, T = +25°C
J
Load Regulation (Note 1)
Reg
mV
load
5.0 mA ≤ I ≤ 1.5 A, T = +25°C
–
–
–
68
25
40
150
75
150
O
O
J
250 mA ≤ I ≤ 750 mA
5.0 mA ≤ I ≤ 1.0 A
O
Output Voltage
–17.9 Vdc ≥ V ≥ –30 Vdc, 5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W
V
Vdc
O
–14.4
–
–
–15.6
8.0
I
O
Input Bias Current
I
IB
4.4
mA
mA
Input Bias Current Change
–17.5 Vdc ≥ V ≥ –30 Vdc
∆I
IB
–
–
–
–
–
–
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
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, 0°C ≤ T ≤ +125°C
∆V /∆T
mV/°C
O
I
O
–
–1.0
–
J
NOTE: 1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account separately.
O
NOTE: 1. Pulse testing with low duty cycle is used.
6
MOTOROLA ANALOG IC DEVICE DATA
MC7900
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 1)
(T = +25°C, I = 100 mA)
Reg
line
J
O
I
I
O
I
I
–21 Vdc ≥ V ≥ –33 Vdc
–
–
25
10
180
90
–24 Vdc ≥ V ≥ –30 Vdc
(T = +25°C, I = 500 mA)
J
–21 Vdc ≥ V ≥ –33 Vdc
–
–
90
50
360
180
–24 Vdc ≥ V ≥ –30 Vdc
Load Regulation, T = +25°C (Note 1)
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
Vdc
O
–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
∆I
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
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, 0°C ≤ T ≤ +125°C
∆V /∆T
mV/°C
O
I
O
–1.0
J
MC7924C
ELECTRICAL CHARACTERISTICS (V = –33 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
–23
–24
–25
J
Line Regulation (Note 1)
(T = +25°C, I = 100 mA)
Reg
line
J
O
I
I
O
I
I
–27 Vdc ≥ V ≥ –38 Vdc
–
–
31
14
240
120
–30 Vdc ≥ V ≥ –36 Vdc
(T = +25°C, I = 500 mA)
J
–27 Vdc ≥ V ≥ –38 Vdc
–
–
118
70
470
240
–30 Vdc ≥ V ≥ –36 Vdc
Load Regulation, T = +25°C (Note 1)
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
Vdc
O
–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
∆I
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
–
–
µV
dB
A
n
Ripple Rejection (I = 20 mA, f = 120 Hz)
O
RR
V –V
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, 0°C ≤ T ≤ +125°C
∆V /∆T
mV/°C
O
I
O
–
–1.0
–
J
NOTE: 1. Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account separately.
O
NOTE: 1. Pulse testing with low duty cycle is used.
7
MOTOROLA ANALOG IC DEVICE DATA
MC7900
Figure 1. Worst Case Power Dissipation as a
Function of Ambient Temperature
Figure 2. Peak Output Current as a Function
of Input–Output Differential Voltage
20
10
2.5
2.0
Infinite Heatsink
θ
= 5
°
C/W
HS
5.0
4.0
3.0
T
= +25°C
J
θ
= 15°C/W
HS
1.5
1.0
0.5
2.0
No Heatsink
1.0
0.5
0.4
0.3
0.2
θ
θ
P
= 5
°
C/W
C/W
JC
JA
= 65
°
(max) = 15W
D
0.1
0
0
3.0
6.0
9.0
12
15
18
21
24
27
30
25
50
75
100
125
150
T , AMBIENT TEMPERATURE (
°C)
|V –V | INPUT–OUTPUT VOLTAGE DIFFERENTIAL (V)
A
I
O
Figure 3. Ripple Rejection as a
Function of Frequency
Figure 4. Ripple Rejection as a Function
of Output Voltage
100
80
80
70
60
50
40
V
V
= –11 V
= –6.0 V
= 20 mA
in
O
f = 120 Hz
I
O
I
∆
= 20 mA
O
V
= 1.0 V(RMS)
in
60
40
20
0
10
100
1.0 k
10 k
100 k
2.0
4.0
6.0
8.0
10
V , OUTPUT VOLTAGE (V)
O
12
14
16
18
20
22
f, FREQUENCY (Hz)
Figure 5. Output Voltage as a Function
of Junction Temperature
Figure 6. Quiescent Current as a
Function of Temperature
6.26
6.22
6.18
5.2
5.0
4.8
V
V
= –11 V
= –6.0 V
= 20 mA
in
O
6.14
6.10
4.6
4.4
4.2
V
V
= –11 V
= –6.0 V
= 20 mA
in
D
I
O
I
O
6.06
0
25
50
75
100
125
–25
0
25
50
75
100
125
150
175
T , JUNCTION TEMPERATURE (
°C)
T , JUNCTION TEMPERATURE (°C)
J
J
8
MOTOROLA ANALOG IC DEVICE DATA
MC7900
APPLICATIONS INFORMATION
Design Considerations
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 µF 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 Ω. 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.
Figure 7. Current Regulator
–20 V
Input
I
= 200 mA
10
O
MC7905
–
V
R
≤ 10 V
O
1.0 µF
1.0 µF
+
+
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
=
+ I
B
O
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.
Figure 8. Current Boost Regulator
(–5.0 V @ 4.0 A, with 5.0 A Current Limiting)
Figure 9. Operational Amplifier Supply
(±15 @ 1.0 A)
–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
Gnd
µF
1.0
µ
F
1.0
1.0
µ
F
F
MJE200*
or Equiv
MC7905*
+
1.0 µF
µ
5.6
1.0
µF
1.0
µF
10
µF
MC7915
+
+
+
–20 V
Input
–15 V
Output
Gnd
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
wheneverthe output ofthepositiveregulator(MC7815)isdrawnbelowgroundwith
an output current greater than 200 mA.
When a boost transistor is used, short circuit currents are equal to the sum of the
seriespassandregulatorlimits, whicharemeasuredat3.2Aand1.8Arespectively
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.
9
MOTOROLA ANALOG IC DEVICE DATA
MC7900
2
Figure 10. D PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
80
3.5
P
for T = +50°C
A
D(max)
70
3.0
Free Air
Mounted
Vertically
2.0 oz. Copper
L
60
50
40
30
2.5
2.0
1.5
1.0
Minimum
Size Pad
L
R
θ
JA
0
5.0
10
15
20
25
30
L, LENGTH OF COPPER (mm)
DEFINITIONS
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.
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.
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.
10
MOTOROLA ANALOG IC DEVICE DATA
MC7900
OUTLINE DIMENSIONS
T SUFFIX
PLASTIC PACKAGE
CASE 221A–06
ISSUE Y
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIM Z DEFINES A ZONE WHERE ALL BODY AND
LEAD IRREGULARITIES ARE ALLOWED.
SEATING
–T
PLANE
–
F
B
C
T
S
INCHES
MILLIMETERS
DIM
A
B
C
D
F
G
H
J
K
L
N
Q
R
S
MIN
MAX
0.620
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
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
–
4
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
–
A
K
Q
Z
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
–
1
2
3
U
H
L
R
J
V
T
U
V
G
D
Z
0.080
2.04
N
D2T SUFFIX
PLASTIC PACKAGE
CASE 936–03
2
(D PAK)
ISSUE B
OPTIONAL
CHAMFER
NOTES:
TERMINAL 4
1
DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
–T
–
A
U
2
3
CONTROLLING DIMENSION: INCH.
TAB CONTOUR OPTIONAL WITHIN DIMENSIONS
A AND K.
E
4
5
DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 4.
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.
S
K
V
B
H
F
INCHES
MILLIMETERS
MIN MAX
9.804 10.236
1
2
3
DIM
A
B
C
D
E
MIN
MAX
0.403
0.368
0.180
0.036
0.055
0.386
0.356
0.170
0.026
0.045
M
9.042
4.318
0.660
1.143
9.347
4.572
0.914
1.397
L
P
J
N
F
0.051 REF
0.100 BSC
0.539 0.579 13.691 14.707
0.125 MAX
0.050 REF
1.295 REF
2.540 BSC
D
G
H
J
K
L
M
N
P
R
S
R
0.010 (0.254) M
T
3.175 MAX
1.270 REF
G
0.000
0.088
0.018
0.058
5
0.010
0.102
0.026
0.078
0.000
0.254
2.591
0.660
1.981
2.235
0.457
1.473
5
REF
REF
C
0.116 REF
0.200 MIN
0.250 MIN
2.946 REF
5.080 MIN
6.350 MIN
U
V
11
MOTOROLA ANALOG IC DEVICE DATA
MC7900
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”
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