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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
MC79M00 Series
THREE-TERMINAL NEGATIVE FIXED VOLTAGE REGULATORS
* * * *
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 MC79M08 -5.0 V -8.0 V MC79M12 MC79M15 -12 V -15 V Pin 1. Ground 2. Input 3. Output Package DPAK TJ = - 40 to +125C 4.0% 4 0% TJ = 0 to +125C Plastic Power DPAK Plastic Power
1 3 1 2 3
T SUFFIX PLASTIC PACKAGE CASE 221A Heatsink surface connected to Pin 2.
1 2 3
ORDERING INFORMATION
Output Voltage Tolerance Operating Temperature Range
Device MC79MXXBDT, BDT-1 MC79MXXBT MC79MXXCDT, CDT-1 MC79MXXCT
XX indicates nominal voltage.
DT SUFFIX PLASTIC PACKAGE CASE 369A (DPAK)
DT-1 SUFFIX PLASTIC PACKAGE CASE 369 (DPAK)
Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2.
Representative Schematic Diagram
Gnd 2.4 k 2.0 k 14.7 k 2.0 k 11.5 k
STANDARD APPLICATION
25
3.6 k
547
Input
4.0 k R1
MC79MXX
Output CO** 1.0 F
1.2 k
1.0 k
12 k
2.0 k
Cin* 0.33 F
4.9 k
R2 10 k 20 pF 10 pF 10 k 2.0 k 1.1 k 20 k 20 k 100 750 240 0.3 VI VO
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.
This device contains 31 active transistors.
(c) Motorola, Inc. 1996
Rev 4
MOTOROLA ANALOG IC DEVICE DATA
1
MC79M00
MAXIMUM RATINGS (TA = 25C, unless otherwise noted.)
Rating Input Voltage Power Dissipation Case 221A TA = 25C Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case Case 369 and 369A (DPAK) TA = 25C Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case Storage Junction Temperature Junction Temperature
NOTE: ESD data available upon request.
Symbol VI
Value -35
Unit Vdc
PD JA JC PD JA JC Tstg TJ
Internally Limited 65 5.0 Internally Limited 92 6.0 -65 to +150 150
W C/W C/W W C/W C/W C C
THERMAL CHARACTERISTICS
Characteristic Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case Symbol RJA RJC Value 65 5.0 Unit C/W C/W
MC79M05B, C ELECTRICAL CHARACTERISTICS (VI = -10 V, IO = 350 mA, Tlow to Thigh [Note 2], unless otherwise noted.)
Characteristic Output Voltage (TJ = 25C) Line Regulation, TJ = 25C (Note 1) -7.0 Vdc VI -25 Vdc -8.0 Vdc VI -18 Vdc Load Regulation, TJ = 25C (Note 1) 5.0 mA IO 500 mA Output Voltage -7.0 Vdc VI -25 Vdc, 5.0 mA IO 350 mA Input Bias Current (TJ = 25C) Input Bias Current Change -8.0 Vdc VI -25 Vdc, IO = 350 mA 5.0 mA IO 350 mA, VI = -10 V Output Noise Voltage, TA = 25C, 10 Hz f 100 kHz Ripple Rejection (f = 120 Hz) Dropout Voltage IO = 500 mA, TJ = 25C Average Temperature Coefficient of Output Voltage IO = 5.0 mA, 0C TJ 125C Symbol VO Regline - - Regload - VO -4.75 IIB IIB - - Vn RR VI-VO - VO/T - 0.2 - 1.1 - mV/C - 54 - - 40 66 0.4 0.4 - - V dB Vdc - - 4.3 -5.25 8.0 mA mA 30 100 Vdc 7.0 2.0 50 30 mV Min -4.8 Typ -5.0 Max -5.2 Unit Vdc mV
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, -40C < TJ < 125C C = Tlow to Thigh, 0C < TJ < 125C
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.)
Characteristic Output Voltage (TJ = 25C) Line Regulation, TJ = 25C (Note 1) -7.0 Vdc VI -25 Vdc -8.0 Vdc VI -18 Vdc Load Regulation, TJ = 25C (Note 1) 5.0 mA IO 500 mA Output Voltage -7.0 Vdc VI -25 Vdc, 5.0 mA IO 350 mA Input Bias Current (TJ = 25C) Input Bias Current Change -8.0 Vdc VI -25 Vdc, IO = 350 mA 5.0 mA IO 350 mA, VI = -10 V Output Noise Voltage, TA = 25C, 10 Hz f 100 kHz Ripple Rejection (f = 120 Hz) Dropout Voltage IO = 500 mA, TJ = 25C Average Temperature Coefficient of Output Voltage IO = 5.0 mA, 0C TJ 125C Symbol VO Regline - - Regload - VO -7.6 IIB IIB - - Vn RR VI-VO - VO/T - 0.4 - 1.1 - mV/C - 54 - - 60 63 0.4 0.4 - - V dB Vdc - -8.0 - -8.4 8.0 mA mA 30 100 Vdc 5.0 3.0 80 50 mV Min -7.7 Typ -8.0 Max -8.3 Unit Vdc mV
MC79M12B, C ELECTRICAL CHARACTERISTICS (VI = -19 V, IO = 350 mA, Tlow to Thigh [Note 2], unless otherwise noted.)
Characteristic Output Voltage (TJ = 25C) Line Regulation, TJ = 25C (Note 1) -14.5 Vdc VI -30 Vdc -15 Vdc VI -25 Vdc Load Regulation, TJ = 25C (Note 1) 5.0 mA IO 500 mA Output Voltage -14.5 Vdc VI -30 Vdc, 5.0 mA IO 350 mA Input Bias Current (TJ = 25C) Input Bias Current Change -14.5 Vdc VI -30 Vdc, IO = 350 mA 5.0 mA IO 350 mA, VI = -19 V Output Noise Voltage, TA = 25C, 10 Hz f 100 kHz Ripple Rejection (f = 120 Hz) Dropout Voltage IO = 500 mA, TJ = 25C Average Temperature Coefficient of Output Voltage IO = 5.0 mA, 0C TJ 125C Symbol VO Regline - - Regload - VO -11.4 IIB IIB - - Vn RR VI-VO - VO/T - -0.8 - 1.1 - mV/C - 54 - - 75 60 0.4 0.4 - - V dB Vdc - - 4.4 -12.6 8.0 mA mA 30 240 Vdc 5.0 3.0 80 50 mV Min -11.5 Typ -12 Max -12.5 Unit Vdc mV
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, -40C < TJ < 125C C = Tlow to Thigh, 0C < TJ < 125C
MOTOROLA ANALOG IC DEVICE DATA
3
MC79M00
MC79M15B, C ELECTRICAL CHARACTERISTICS (VI = - 23 V, IO = 350 mA, Tlow to Thigh [Note 2], unless otherwise noted.)
Characteristic Output Voltage (TJ = 25C) Line Regulation, TJ = 25C (Note 1) -17.5 Vdc VI -30 Vdc -18 Vdc VI -28 Vdc Load Regulation, TJ = 25C (Note 1) 5.0 mA IO 500 mA Output Voltage -17.5 Vdc VI -30 Vdc, 5.0 mA IO 350 mA Input Bias Current (TJ = 25C) Input Bias Current Change -17.5 Vdc VI -30 Vdc, IO = 350 mA 5.0 mA IO 350 mA, VI = -23 V Output Noise Voltage, TA = 25C, 10 Hz f 100 kHz Ripple Rejection (f = 120 Hz) Dropout Voltage IO = 500 mA, TJ = 25C Average Temperature Coefficient of Output Voltage IO = 5.0 mA, 0C TJ 125C Symbol VO Regline - - Regload - VO -14.25 IIB IIB - - Vn RR VI-VO - VO/T - -1.0 - 1.1 - mV/C - 54 - - 90 60 0.4 0.4 - - V dB Vdc - - 4.4 -15.75 8.0 mA mA 30 240 Vdc 5.0 3.0 80 50 mV Min -14.4 Typ -15 Max -15.6 Unit Vdc mV
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, -40C < TJ < 125C C = Tlow to Thigh, 0C < TJ < 125C
Figure 1. DPAK Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length
Free Air Mounted Vertically Minimum Size Pad PD(max) for TA = 50C 2.0 oz. Copper L L PD, MAXIMUM POWER DISSIPATION (W) 100 R JA, THERMAL RESISTANCE JUNCTION-TO-AIR (C/W) 90 80 70 60 50 RJA 40 0 5.0 10 15 20 25 30 L, LENGTH OF COPPER (mm) 2.4 2.0 1.6 1.2 0.8 0.4 0
4
IIII IIII IIII
MOTOROLA ANALOG IC DEVICE DATA
MC79M00
OUTLINE DIMENSIONS
T SUFFIX PLASTIC PACKAGE CASE 221A-06 ISSUE Y
-T- B
4
SEATING PLANE
F T S
C
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION Z DEFINES A ZONE WHERE ALL BODY AND LEAD IRREGULARITIES ARE ALLOWED. DIM A B C D F G H J K L N Q R S T U V Z 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 0.045 0.055 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 1.15 1.39 5.97 6.47 0.00 1.27 1.15 --- --- 2.04
Q
123
A U K
H Z L V G D N R J
DT SUFFIX PLASTIC PACKAGE CASE 369A-13 (DPAK) ISSUE Y
-T- B V R
4
SEATING PLANE
C E
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. INCHES MIN MAX 0.235 0.250 0.250 0.265 0.086 0.094 0.027 0.035 0.033 0.040 0.037 0.047 0.180 BSC 0.034 0.040 0.018 0.023 0.102 0.114 0.090 BSC 0.175 0.215 0.020 0.050 0.020 --- 0.030 0.050 0.138 --- MILLIMETERS MIN MAX 5.97 6.35 6.35 6.73 2.19 2.38 0.69 0.88 0.84 1.01 0.94 1.19 4.58 BSC 0.87 1.01 0.46 0.58 2.60 2.89 2.29 BSC 4.45 5.46 0.51 1.27 0.51 --- 0.77 1.27 3.51 ---
S
1 2 3
A K F L D G
2 PL
Z U
J H 0.13 (0.005) T
DIM A B C D E F G H J K L R S U V Z
M
MOTOROLA ANALOG IC DEVICE DATA
5
MC79M00
OUTLINE DIMENSIONS
DT-1 SUFFIX PLASTIC PACKAGE CASE 369-07 (DPAK) ISSUE K
B V R
4
C E
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. DIM A B C D E F G H J K R S V INCHES MIN MAX 0.235 0.250 0.250 0.265 0.086 0.094 0.027 0.035 0.033 0.040 0.037 0.047 0.090 BSC 0.034 0.040 0.018 0.023 0.350 0.380 0.175 0.215 0.050 0.090 0.030 0.050 MILLIMETERS MIN MAX 5.97 6.35 6.35 6.73 2.19 2.38 0.69 0.88 0.84 1.01 0.94 1.19 2.29 BSC 0.87 1.01 0.46 0.58 8.89 9.65 4.45 5.46 1.27 2.28 0.77 1.27
A
1 2 3
S -T-
SEATING PLANE
K
F D G
3 PL M
J H 0.13 (0.005) T
6
MOTOROLA ANALOG IC DEVICE DATA
MC79M00
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MOTOROLA ANALOG IC DEVICE DATA
7
MC79M00
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8
*MC79M00/D*
MOTOROLA ANALOG IC DEVICE DATA MC79M00/D

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