Motorola MC7912CD2T, MC7912BD2T, MC7912BT, MC7918BT, MC7918CD2T Datasheet
...
Three-Terminal 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)
Representative Schematic Diagram
|
|
|
|
|
|
|
Gnd |
|
k |
k |
k |
|
|
|
|
|
2.4 |
14.7 |
2.0 |
2.0 k |
8.0 k |
|
|
|
|
|
|
|
|||
3.6 k |
25 |
|
|
|
|
4.0 k |
R1 |
|
|
4.0 k |
|
1.0 k |
|||
1.2 k |
k |
k |
1.6 k |
|
|
|
|
12 |
1.0 |
|
|
|
|
||
|
|
|
|
|
|||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
R2 |
|
|
|
|
|
10 k |
|
VO |
|
|
|
|
|
20 pF |
|
|
|
|
|
|
|
10 pF |
10 k |
|
|
|
|
2.0 k |
20 k |
20 k |
240 |
0.3 |
|
|
|
|
|
|
||
|
|
1.1 k |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
750 |
|
|
|
This device contains 26 active transistors. |
|
VI |
|||
|
|
|
|
||||
ORDERING INFORMATION
|
Output Voltage |
Operating |
|
|
Device |
Tolerance |
Temperature Range |
Package |
|
|
|
|
|
|
MC79XXACD2T |
2% |
|
Surface Mount |
|
|
|
|
||
MC79XXCD2T |
4% |
TJ = 0° to +125°C |
||
|
||||
|
|
|
||
MC79XXACT |
2% |
Insertion Mount |
||
|
||||
|
|
|
||
MC79XXCT |
4% |
|
||
|
|
|||
|
|
|
|
|
MC79XXBD2T |
4% |
TJ = ±40° to +125°C |
Surface Mount |
|
|
|
|||
MC79XXBT |
Insertion Mount |
|||
|
|
|||
|
|
|
|
XX indicates nominal voltage.
Order this document by MC7900/D
MC7900
Series
THREE±TERMINAL
NEGATIVE FIXED
VOLTAGE REGULATORS
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface connected to Pin 2.
1
2
3
|
|
Pin 1. |
Ground |
|
|
2. |
Input |
|
|
3. |
Output |
D2T SUFFIX |
|
|
|
PLASTIC PACKAGE |
|
|
|
CASE 936 |
|
|
|
(D2PAK) |
1 |
2 |
|
|
|
|
|
|
|
3 |
|
Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2.
STANDARD APPLICATION
Input |
MC79XX |
Output |
Cin* |
CO** |
|
0.33 μF |
||
|
1.0 |
μF |
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.
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
MC7905 |
5.0 V |
MC7912 |
12 V |
MC7905.2 |
5.2 V |
MC7915 |
15 V |
MC7906 |
6.0 V |
MC7918 |
28 V |
MC7908 |
8.0 V |
MC7924 |
24 V |
Motorola, Inc. 1996 |
Rev 6 |
MC7900
MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.) |
|
|
|
|
|
|
|
|
||||
|
Rating |
Symbol |
Value |
|
Unit |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
Input Voltage (± 5.0 V ≥ VO ≥ ±18 V) |
VI |
± 35 |
|
Vdc |
|
|
|
|
|
|
||
(24 V) |
|
|
± 40 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Power Dissipation |
|
|
|
|
|
|
|
|
|
|
|
|
Case 221A |
|
|
|
|
|
|
|
|
|
|
|
|
TA = +25°C |
|
|
PD |
Internally Limited |
|
W |
|
|
|
|
|
|
Thermal Resistance, Junction±to±Ambient |
θJA |
65 |
°C/W |
|
|
|
|
|
|
|||
Thermal Resistance, Junction±to±Case |
θJC |
5.0 |
°C/W |
|
|
|
|
|
|
|||
Case 936 (D2PAK) |
|
|
|
|
|
|
|
|
|
|
|
|
TA = +25°C |
|
|
PD |
Internally Limited |
|
W |
|
|
|
|
|
|
Thermal Resistance, Junction±to±Ambient |
θJA |
70 |
°C/W |
|
|
|
|
|
|
|||
Thermal Resistance, Junction±to±Case |
θJC |
5.0 |
°C/W |
|
|
|
|
|
|
|||
Storage Junction Temperature Range |
Tstg |
± 65 to +150 |
|
°C |
|
|
|
|
|
|
||
Junction Temperature |
TJ |
+150 |
|
°C |
|
|
|
|
|
|
||
THERMAL CHARACTERISTICS |
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|||
Characteristics |
Symbol |
Max |
|
Unit |
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
||
Thermal Resistance, Junction±to±Ambient |
RθJA |
65 |
°C/W |
|
|
|
|
|
|
|||
Thermal Resistance, Junction±to±Case |
RθJC |
5.0 |
°C/W |
|
|
|
|
|
|
|||
MC7905C |
|
|
|
|
|
|
|
|
|
|
|
|
ELECTRICAL CHARACTERISTICS (VI = ±10 V, IO = 500 mA, 0°C < 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) |
|
|
|
Regline |
|
|
|
|
mV |
|||
(TJ = +25°C, IO = 100 mA) |
|
|
|
|
|
|
|
|
|
|
||
±7.0 Vdc ≥ |
VI ≥ |
± 25 Vdc |
|
|
|
|
|
± |
|
7.0 |
50 |
|
± 8.0 Vdc ≥ |
VI ≥ |
±12 Vdc |
|
|
|
|
|
± |
|
2.0 |
25 |
|
(TJ = +25°C, IO = 500 mA) |
|
|
|
|
|
|
|
|
|
|
||
±7.0 Vdc ≥ |
VI ≥ |
± 25 Vdc |
|
|
|
|
|
± |
|
35 |
100 |
|
± 8.0 Vdc ≥ |
VI ≥ |
±12 Vdc |
|
|
|
|
|
± |
|
8.0 |
50 |
|
Load Regulation, TJ = +25°C (Note 1) |
|
|
|
Regload |
|
|
|
|
mV |
|||
5.0 mA ≤ IO ≤ 1.5 A |
|
|
|
|
|
± |
|
11 |
100 |
|
||
250 mA ≤ IO ≤ 750 mA |
|
|
|
|
|
± |
|
4.0 |
50 |
|
||
Output Voltage |
|
|
|
|
|
VO |
|
|
|
|
Vdc |
|
±7.0 Vdc ≥ VI ≥ ± 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W |
|
|
|
|
± 4.75 |
|
± |
± 5.25 |
|
|||
Input Bias Current (TJ = +25°C) |
|
|
|
IIB |
± |
|
4.3 |
8.0 |
mA |
|||
Input Bias Current Change |
|
|
|
IIB |
|
|
|
|
mA |
|||
±7.0 Vdc ≥ VI ≥ ± 25 Vdc |
|
|
|
|
|
± |
|
± |
1.3 |
|
||
5.0 mA ≤ IO ≤ 1.5 A |
|
|
|
|
|
± |
|
± |
0.5 |
|
||
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) |
|
|
Vn |
± |
|
40 |
± |
μV |
||||
Ripple Rejection (IO = 20 mA, f = 120 Hz) |
|
|
|
RR |
± |
|
70 |
± |
dB |
|||
Dropout Voltage |
|
|
|
|
VI±VO |
|
|
|
|
Vdc |
||
IO = 1.0 A, TJ = +25°C |
|
|
|
|
|
± |
|
2.0 |
± |
|
||
Average Temperature Coefficient of Output Voltage |
|
|
VO/ T |
|
|
|
|
mV/°C |
||||
IO = 5.0 mA, 0°C ≤ TJ ≤ +125°C |
|
|
|
|
|
± |
|
±1.0 |
± |
|
||
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 |
MOTOROLA ANALOG IC DEVICE DATA |
MC7900
MC7905AC
ELECTRICAL CHARACTERISTICS (VI = ±10 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
|
|
|
Characteristics |
Symbol |
Min |
Typ |
Max |
Unit |
|
|
|
|
|
|
|||
Output Voltage (TJ = +25°C) |
VO |
± 4.9 |
± 5.0 |
± 5.1 |
Vdc |
|||
Line Regulation (Note 1) |
Regline |
|
|
|
mV |
|||
± 8.0 Vdc ≥ |
VI |
≥ |
±12 Vdc; IO = 1.0 A, TJ = +25°C |
|
± |
2.0 |
25 |
|
± 8.0 Vdc ≥ |
VI |
≥ |
±12 Vdc; IO = 1.0 A |
|
± |
7.0 |
50 |
|
±7.5 Vdc ≥ |
VI |
≥ |
± 25 Vdc; IO = 500 mA |
|
± |
7.0 |
50 |
|
±7.0 Vdc ≥ |
VI |
≥ |
± 20 Vdc; IO = 1.0 A, TJ = +25°C |
|
± |
6.0 |
50 |
|
Load Regulation (Note 1) |
Regload |
|
|
|
mV |
|||
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C |
|
± |
11 |
100 |
|
|||
250 mA ≤ IO ≤ 750 mA |
|
± |
4.0 |
50 |
|
|||
5.0 mA ≤ IO ≤ 1.0 A |
|
± |
9.0 |
100 |
|
|||
Output Voltage |
|
|
VO |
|
|
|
Vdc |
|
±7.5 Vdc ≥ |
VI ≥ |
± 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W |
|
± 4.80 |
± |
± 5.20 |
|
|
Input Bias Current |
|
IIB |
± |
4.4 |
8.0 |
mA |
||
Input Bias Current Change |
IIB |
|
|
|
mA |
|||
±7.5 Vdc ≥ |
VI ≥ |
± 25 Vdc |
|
± |
± |
1.3 |
|
|
5.0 mA ≤ IO ≤ 1.0 A |
|
± |
± |
0.5 |
|
|||
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C |
|
± |
± |
0.5 |
|
|||
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) |
Vn |
± |
40 |
± |
μV |
|||
Ripple Rejection (IO = mA, f = 120 Hz) |
RR |
± |
70 |
± |
dB |
|||
Dropout Voltage |
|
|
VI±VO |
|
|
|
Vdc |
|
IO = 1.0 A. TJ = +25°C |
|
± |
2.0 |
± |
|
|||
Average Temperature Coefficient of Output Voltage |
VO/ T |
|
|
|
mV/°C |
|||
IO = 5.0 A, 0°C ≤ TJ ≤ +125°C |
|
± |
±1.0 |
± |
|
|||
MC7905.2C
ELECTRICAL CHARACTERISTICS (VI = ±10 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
|
|
Characteristics |
Symbol |
Min |
Typ |
Max |
Unit |
|
|
|
|
|
|
||
Output Voltage (TJ = +25°C) |
VO |
± 5.0 |
± 5.2 |
± 5.4 |
Vdc |
||
Line Regulation (Note 1) |
Regline |
|
|
|
mV |
||
(TJ = +25°C, IO = 100 mA) |
|
|
|
|
|
||
±7.2 Vdc ≥ |
VI ≥ |
± 25 Vdc |
|
± |
8.0 |
52 |
|
± 8.0 Vdc ≥ |
VI ≥ |
±12 Vdc |
|
± |
2.2 |
27 |
|
(TJ = +25°C, IO = 500 mA) |
|
|
|
|
|
||
±7.2 Vdc ≥ |
VI ≥ |
± 25 Vdc |
|
± |
37 |
105 |
|
± 8.0 Vdc ≥ |
VI ≥ |
±12 Vdc |
|
± |
8.5 |
52 |
|
Load Regulation, TJ = +25°C (Note 1) |
Regload |
|
|
|
mV |
||
5.0 mA ≤ IO ≤ 1.5 A |
|
± |
12 |
105 |
|
||
250 mA ≤ IO ≤ 750 mA |
|
± |
4.5 |
52 |
|
||
Output Voltage |
|
|
VO |
|
|
|
Vdc |
±7.2 Vdc ≥ VI ≥ ± 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W |
|
± 4.95 |
± |
± 5.45 |
|
||
Input Bias Current (TJ = +25°C) |
IIB |
± |
4.3 |
8.0 |
mA |
||
Input Bias Current Change |
IIB |
|
|
|
mA |
||
±7.2 Vdc ≥ VI ≥ ± 25 Vdc |
|
± |
± |
1.3 |
|
||
5.0 mA ≤ IO ≤ 1.5 A |
|
± |
± |
0.5 |
|
||
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) |
Vn |
± |
42 |
± |
μV |
||
Ripple Rejection (IO = 20 mA, f = 120 Hz) |
RR |
± |
68 |
± |
dB |
||
Dropout Voltage |
|
VI±VO |
|
|
|
Vdc |
|
IO = 1.0 A, TJ = +25°C |
|
± |
2.0 |
± |
|
||
Average Temperature Coefficient of Output Voltage |
VO/ T |
|
|
|
mV/°C |
||
IO = 5.0 mA, 0°C ≤ TJ ≤ +125°C |
|
± |
±1.0 |
± |
|
||
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.
MOTOROLA ANALOG IC DEVICE DATA |
3 |
|
MC7900
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 1) |
Regline |
|
|
|
mV |
||
(TJ = +25°C, IO = 100 mA) |
|
|
|
|
|
||
± 8.0 Vdc ≥ |
VI ≥ |
± 25 Vdc |
|
± |
9.0 |
60 |
|
±9.0 Vdc ≥ |
VI ≥ |
±13 Vdc |
|
± |
3.0 |
30 |
|
(TJ = +25°C, IO = 500 mA) |
|
|
|
|
|
||
± 8.0 Vdc ≥ |
VI ≥ |
± 25 Vdc |
|
± |
43 |
120 |
|
± 9.0 Vdc ≥ |
VI ≥ |
±13 Vdc |
|
± |
10 |
60 |
|
Load Regulation, TJ = +25°C (Note 1) |
Regload |
|
|
|
mV |
||
5.0 mA ≤ IO ≤ 1.5 A |
|
± |
13 |
120 |
|
||
250 mA ≤ IO ≤ 750 mA |
|
± |
5.0 |
60 |
|
||
Output Voltage |
|
|
VO |
|
|
|
Vdc |
± 8.0 Vdc ≥ VI ≥ ± 21 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W |
|
± 5.7 |
± |
± 6.3 |
|
||
Input Bias Current (TJ = +25°C) |
IIB |
± |
4.3 |
8.0 |
mA |
||
Input Bias Current Change |
IIB |
|
|
|
mA |
||
± 8.0 Vdc ≥ VI ≥ ± 25 Vdc |
|
± |
± |
1.3 |
|
||
5.0 mA ≤ IO ≤ 1.5 A |
|
± |
± |
0.5 |
|
||
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) |
Vn |
± |
45 |
± |
μV |
||
Ripple Rejection (IO = 20 mA, f = 120 Hz) |
RR |
± |
65 |
± |
dB |
||
Dropout Voltage |
|
VI±VO |
|
|
|
Vdc |
|
IO = 1.0 A, TJ = +25°C |
|
± |
2.0 |
± |
|
||
Average Temperature Coefficient of Output Voltage |
VO/ T |
|
|
|
mV/°C |
||
IO = 5.0 A, 0°C ≤ TJ ≤ +125°C |
|
± |
±1.0 |
± |
|
||
MC7908C
ELECTRICAL CHARACTERISTICS (VI = ±14 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics |
Symbol |
Min |
Typ |
Max |
Unit |
|
|
|
|
|
|
Output Voltage (TJ = +25°C) |
VO |
±7.7 |
± 8.0 |
± 8.3 |
Vdc |
Line Regulation (Note 1) |
Regline |
|
|
|
mV |
(TJ = +25°C, IO = 100 mA) |
|
|
|
|
|
±10.5 Vdc ≥ VI ≥ ±25 Vdc |
|
± |
12 |
80 |
|
±11 Vdc ≥ VI ≥ ±17 Vdc |
|
± |
5.0 |
40 |
|
(TJ = +25°C, IO = 500 mA) |
|
|
|
|
|
±10.5 Vdc ≥ VI ≥ ±25 Vdc |
|
± |
50 |
160 |
|
±11 Vdc ≥ VI ≥ ±17 Vdc |
|
± |
22 |
80 |
|
Load Regulation, TJ = +25°C (Note 1) |
Regload |
|
|
|
mV |
5.0 mA ≤ IO ≤ 1.5 A |
|
± |
26 |
160 |
|
250 mA ≤ IO ≤ 750 mA |
|
± |
9.0 |
80 |
|
Output Voltage |
VO |
|
|
|
Vdc |
±10.5 Vdc ≥ VI ≥ ± 23 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W |
|
±7.6 |
± |
± 8.4 |
|
Input Bias Current (TJ = +25°C) |
IIB |
± |
4.3 |
8.0 |
mA |
Input Bias Current Change |
IIB |
|
|
|
mA |
±10.5 Vdc ≥ VI ≥ ± 25 Vdc |
|
± |
± |
1.0 |
|
5.0 mA ≤ IO ≤ 1.5 A |
|
± |
± |
0.5 |
|
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) |
Vn |
± |
52 |
± |
μV |
Ripple Rejection (IO = 20 mA, f = 120 Hz) |
RR |
± |
62 |
± |
dB |
Dropout Voltage |
VI±VO |
|
|
|
Vdc |
IO = 1.0 A, TJ = +25°C |
|
± |
2.0 |
± |
|
Average Temperature Coefficient of Output Voltage |
VO/ T |
|
|
|
mV/°C |
IO = 5.0 mA, 0°C ≤ TJ ≤ +125°C |
|
± |
±1.0 |
± |
|
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 |
MOTOROLA ANALOG IC DEVICE DATA |
Loading...