Motorola MC79M15CDT-1, MC79M15CDTRK, MC79M15CT, MC79M15CDT, MC79M15BDT-1 Datasheet
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Three-Terminal Negative
Voltage Regulators
The MC79M00 series of fixed output negative voltage regulators are intended as complements to the popular MC78M00 series devices.
Available in fixed output voltage options of ±5.0, ±8.0, ±12 and ±15 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 0.5 A.
•No External Components Required
•Internal Thermal Overload Protection
•Internal Short Circuit Current Limiting
•Output Transistor Safe±Area Compensation
•Also Available in Surface Mount DPAK (DT) Package
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
MC79M05 |
±5.0 V |
MC79M12 |
±12 V |
MC79M08 |
±8.0 V |
MC79M15 |
±15 V |
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ORDERING INFORMATION
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Output |
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Voltage |
Operating |
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Device |
Tolerance |
Temperature Range |
Package |
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MC79MXXBDT, BDT±1 |
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TJ = ±40° to +125°C |
DPAK |
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MC79MXXBT |
4.0% |
Plastic Power |
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MC79MXXCDT, CDT±1 |
TJ = 0° to +125°C |
DPAK |
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MC79MXXCT |
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Plastic Power |
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XX indicates nominal voltage.
Representative Schematic Diagram
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Gnd |
25 |
2.4 k |
14.7 k |
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2.0 k |
2.0 k |
11.5 k |
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3.6 k |
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4.9 k |
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547 |
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4.0 k |
R1 |
1.2 k |
12 k |
1.0 k |
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2.0 k |
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R2 |
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10 k |
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VO |
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20 pF |
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10 pF |
10 k |
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2.0 k |
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20 k |
20 k |
240 |
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1.1 k |
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100 |
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0.3 |
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750 |
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VI |
This device contains 31 active transistors.
Order this document by MC79M00/D
MC79M00
Series
THREE±TERMINAL
NEGATIVE FIXED
VOLTAGE REGULATORS
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface connected to Pin 2.
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1 |
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2 |
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Pin 1. |
Ground |
3 |
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2. |
Input |
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3. |
Output |
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1 |
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1 |
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3 |
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2 |
3 |
DT SUFFIX |
DT±1 SUFFIX |
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PLASTIC PACKAGE |
PLASTIC PACKAGE |
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CASE 369A |
CASE 369 |
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(DPAK) |
(DPAK) |
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Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2.
STANDARD APPLICATION
Input |
MC79MXX |
Output |
Cin* |
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CO** |
0.33 μF |
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1.0 μF |
A common ground is required between the input and the output voltages. The input voltage must remain typically 1.1 V 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.
Motorola, Inc. 1996 |
Rev 4 |
MC79M00
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)
Rating |
Symbol |
Value |
Unit |
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Input Voltage |
VI |
±35 |
Vdc |
Power Dissipation |
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Case 221A |
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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 369 and 369A (DPAK) |
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TA = 25°C |
PD |
Internally Limited |
W |
Thermal Resistance, Junction±to±Ambient |
θJA |
92 |
°C/W |
Thermal Resistance, Junction±to±Case |
θJC |
6.0 |
°C/W |
Storage Junction Temperature |
Tstg |
±65 to +150 |
°C |
Junction Temperature |
TJ |
150 |
°C |
NOTE: ESD data available upon request. |
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THERMAL CHARACTERISTICS
Characteristic |
Symbol |
Value |
Unit |
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Thermal Resistance, Junction±to±Ambient |
RθJA |
65 |
°C/W |
Thermal Resistance, Junction±to±Case |
RθJC |
5.0 |
°C/W |
MC79M05B, C
ELECTRICAL CHARACTERISTICS (VI = ±10 V, IO = 350 mA, Tlow to Thigh [Note 2], unless otherwise noted.)
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Characteristic |
Symbol |
Min |
Typ |
Max |
Unit |
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Output Voltage (TJ = 25°C) |
VO |
±4.8 |
±5.0 |
±5.2 |
Vdc |
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Line Regulation, TJ = 25°C (Note 1) |
Regline |
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mV |
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±7.0 Vdc ≥ |
VI |
≥ |
±25 Vdc |
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± |
7.0 |
50 |
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±8.0 Vdc ≥ |
VI |
≥ |
±18 Vdc |
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± |
2.0 |
30 |
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Load Regulation, TJ = 25°C (Note 1) |
Regload |
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mV |
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5.0 mA ≤ IO ≤ 500 mA |
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30 |
100 |
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Output Voltage |
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VO |
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Vdc |
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±7.0 Vdc ≥ |
VI ≥ |
±25 Vdc, 5.0 mA ≤ IO ≤ 350 mA |
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±4.75 |
± |
±5.25 |
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Input Bias Current (TJ = 25°C) |
IIB |
± |
4.3 |
8.0 |
mA |
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Input Bias Current Change |
IIB |
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mA |
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±8.0 Vdc ≥ |
VI ≥ |
±25 Vdc, IO = 350 mA |
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± |
0.4 |
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5.0 mA ≤ IO ≤ 350 mA, VI = ±10 V |
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0.4 |
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Output Noise Voltage, TA = 25°C, 10 Hz ≤ f ≤ 100 kHz |
Vn |
± |
40 |
± |
μV |
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Ripple Rejection (f = 120 Hz) |
RR |
54 |
66 |
± |
dB |
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Dropout Voltage |
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VI±VO |
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Vdc |
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IO = 500 mA, TJ = 25°C |
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± |
1.1 |
± |
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Average Temperature Coefficient of Output Voltage |
VO/ T |
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mV/°C |
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IO = 5.0 mA, 0°C ≤ TJ ≤ 125°C |
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0.2 |
± |
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NOTES: 1. Load and line regulation are specified at constant temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
2.B = Tlow to Thigh, ±40°C < TJ < 125°C C = Tlow to Thigh, 0°C < TJ < 125°C
2 |
MOTOROLA ANALOG IC DEVICE DATA |
MC79M00
MC79M08B, C
ELECTRICAL CHARACTERISTICS (VI = ±10 V, IO = 350 mA, Tlow to Thigh [Note 2], unless otherwise noted.)
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Characteristic |
Symbol |
Min |
Typ |
Max |
Unit |
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Output Voltage (TJ = 25°C) |
VO |
±7.7 |
±8.0 |
±8.3 |
Vdc |
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Line Regulation, TJ = 25°C (Note 1) |
Regline |
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mV |
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±7.0 Vdc ≥ |
VI |
≥ |
±25 Vdc |
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± |
5.0 |
80 |
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±8.0 Vdc ≥ |
VI |
≥ |
±18 Vdc |
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± |
3.0 |
50 |
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Load Regulation, TJ = 25°C (Note 1) |
Regload |
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mV |
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5.0 mA ≤ IO ≤ 500 mA |
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30 |
100 |
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Output Voltage |
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VO |
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Vdc |
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±7.0 Vdc ≥ |
VI ≥ |
±25 Vdc, 5.0 mA ≤ IO ≤ 350 mA |
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±7.6 |
±8.0 |
±8.4 |
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Input Bias Current (TJ = 25°C) |
IIB |
± |
± |
8.0 |
mA |
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Input Bias Current Change |
IIB |
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mA |
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±8.0 Vdc ≥ |
VI ≥ |
±25 Vdc, IO = 350 mA |
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± |
± |
0.4 |
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5.0 mA ≤ IO ≤ 350 mA, VI = ±10 V |
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± |
0.4 |
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Output Noise Voltage, TA = 25°C, 10 Hz ≤ f ≤ 100 kHz |
Vn |
± |
60 |
± |
μV |
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Ripple Rejection (f = 120 Hz) |
RR |
54 |
63 |
± |
dB |
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Dropout Voltage |
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VI±VO |
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Vdc |
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IO = 500 mA, TJ = 25°C |
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± |
1.1 |
± |
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Average Temperature Coefficient of Output Voltage |
VO/ T |
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mV/°C |
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IO = 5.0 mA, 0°C ≤ TJ ≤ 125°C |
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0.4 |
± |
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MC79M12B, C
ELECTRICAL CHARACTERISTICS (VI = ±19 V, IO = 350 mA, Tlow to Thigh [Note 2], unless otherwise noted.)
Characteristic |
Symbol |
Min |
Typ |
Max |
Unit |
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Output Voltage (TJ = 25°C) |
VO |
±11.5 |
±12 |
±12.5 |
Vdc |
Line Regulation, TJ = 25°C (Note 1) |
Regline |
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mV |
±14.5 Vdc ≥ VI ≥ ±30 Vdc |
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± |
5.0 |
80 |
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±15 Vdc ≥ VI ≥ ±25 Vdc |
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± |
3.0 |
50 |
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Load Regulation, TJ = 25°C (Note 1) |
Regload |
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mV |
5.0 mA ≤ IO ≤ 500 mA |
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± |
30 |
240 |
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Output Voltage |
VO |
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Vdc |
±14.5 Vdc ≥ VI ≥ ±30 Vdc, 5.0 mA ≤ IO ≤ 350 mA |
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±11.4 |
± |
±12.6 |
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Input Bias Current (TJ = 25°C) |
IIB |
± |
4.4 |
8.0 |
mA |
Input Bias Current Change |
IIB |
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mA |
±14.5 Vdc ≥ VI ≥ ±30 Vdc, IO = 350 mA |
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± |
± |
0.4 |
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5.0 mA ≤ IO ≤ 350 mA, VI = ±19 V |
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± |
0.4 |
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Output Noise Voltage, TA = 25°C, 10 Hz ≤ f ≤ 100 kHz |
Vn |
± |
75 |
± |
μV |
Ripple Rejection (f = 120 Hz) |
RR |
54 |
60 |
± |
dB |
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Dropout Voltage |
VI±VO |
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Vdc |
IO = 500 mA, TJ = 25°C |
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± |
1.1 |
± |
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Average Temperature Coefficient of Output Voltage |
VO/ T |
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mV/°C |
IO = 5.0 mA, 0°C ≤ TJ ≤ 125°C |
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± |
±0.8 |
± |
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NOTES: 1. Load and line regulation are specified at constant temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
2.B = Tlow to Thigh, ±40°C < TJ < 125°C C = Tlow to Thigh, 0°C < TJ < 125°C
MOTOROLA ANALOG IC DEVICE DATA |
3 |
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