Order this document by MC79L00/D The MC79L00, A Series negative voltage regulators are inexpensive, easy-to-use devices suitable for numerous applications requiring up to100 mA. Like the higher powered MC7900 Series negative regulators, this series features thermal shutdown and current limiting, making them remarkably rugged. In most applications, no external components are required for operation. The MC79L00 devices are useful for on-card regulation or any other application where a regulated negative voltage at a modest current level is needed. These regulators offer substantial advantage over the common resistor/zener diode approach. * No External Components Required * * * * * Internal Short Circuit Current Limiting Internal Thermal Overload Protection THREE-TERMINAL LOW CURRENT NEGATIVE FIXED VOLTAGE REGULATORS SEMICONDUCTOR TECHNICAL DATA P SUFFIX PLASTIC PACKAGE CASE 29 Pin 1. Ground 2. Input 3. Output Low Cost Complementary Positive Regulators Offered (MC78L00 Series) 1 2 3 Available in Either 5% (AC) or 10% (C) Selections D SUFFIX PLASTIC PACKAGE CASE 751 (SOP-8)* 8 1 Pin 1. 2. 3. 4. Representative Schematic Diagram Gnd R 5 R18 R1 R8 R6 R9 R17 Q4 Q8 Q14 Q9 R16 R4 Output GND Vin Vin NC * SOP-8 is an internally modified SO-8 package. Pins 2, 3, 6, and 7 are electrically common to the die attach flag. This internal lead frame modification decreases package thermal resistance and increases power dissipation capability when appropriately mounted on a printed circuit board. SOP-8 conforms to all external dimensions of the standard SO-8 package. C Q7 R10 R11 Device No. 5% Nominal Voltage MC79L05C MC79L12C MC79L15C MC79L18C MC79L24C MC79L05AC MC79L12AC MC79L15AC MC79L18AC MC79L24AC -5.0 -12 -15 -18 -24 Q13 Q2 Q6 Device No. 10% ORDERING INFORMATION Q12 R2 Z1 R3 5. 6. 7. 8. Q10 Q5 R7 Q1 Vout Vin Vin NC Device Q11 R14 Operating Temperature Range MC79LXXACD* R15 MC79LXXACP Input SOP-8 TJ = 0 to +125C MC79LXXCP MC79LXXABP* SOP-8 TJ = -40 to +125C Plastic Power XX indicates nominal voltage Motorola, Inc. 1996 MOTOROLA ANALOG IC DEVICE DATA Plastic Power Plastic Power MC79LXXABD* * Automotive temperature range selections are available with special test conditions * and additional tests in 5, 12 and 15 V devices. Contact your local Motorola sales * office for information. Package Rev 2 1 MC79L00, A Series MAXIMUM RATINGS (TA = +25C, unless otherwise noted.) Rating Input Voltage (-5 V) Input Voltage (-12, -15, -18 V) Input Voltage (-24 V) Storage Temperature Range Junction Temperature Symbol Value Unit VI -30 -35 -40 Vdc Tstg TJ -65 to +150 C +150 C ELECTRICAL CHARACTERISTICS (VI = -10 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, -40C < TJ +125C (for MC79LXXAB), 0C < TJ < +125C (for MC79LXXAC)). MC79L05C, AB Characteristics Output Voltage (TJ = +25C) Input Regulation (TJ = +25C) -7.0 Vdc VI -20 Vdc -8.0 Vdc VI -20 Vdc Load Regulation TJ = +25C, 1.0 mA IO 100 mA 1.0 mA IO 40 mA Output Voltage -7.0 Vdc VI -20 Vdc, 1.0 mA IO 40 mA VI = -10 Vdc, 1.0 mA IO 70 mA Input Bias Current (TJ = +25C) (TJ = +125C) MC79L05AC, AB Symbol Min Typ Max Min Typ Max Unit VO Regline -4.6 -5.0 -5.4 -4.8 -5.0 -5.2 Vdc mV - - - - 200 150 - - - - 150 100 - - - - 60 30 - - - - 60 30 -4.5 -4.5 - - -5.5 -5.5 -4.75 -4.75 - - -5.25 -5.25 - - - - 6.0 5.5 - - - - 6.0 5.5 - - - - 1.5 0.2 - - - - 1.5 0.1 Regload mV VO Vdc IIB mA Input Bias Current Change -8.0 Vdc VI -20 Vdc 1.0 mA IO 40 mA IIB Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) Vn - 40 - - 40 - V Ripple Rejection (-8.0 VI -18 Vdc, f = 120 Hz, TJ = +25C) RR 40 49 - 41 49 - dB |VI-VO| - 1.7 - - 1.7 - Vdc Dropout Voltage (IO = 40 mA, TJ = +25C) mA ELECTRICAL CHARACTERISTICS (VI = -19 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, -40C < TJ +125C (for MC79LXXAC), 0C < TJ < +125C (for MC79LXXAB)). MC79L12C, AB Characteristics Output Voltage (TJ = +25C) Input Regulation (TJ = +25C) -14.5 Vdc VI -27 Vdc -16 Vdc VI -27 Vdc Load Regulation TJ = +25C, 1.0 mA IO 100 mA 1.0 mA IO 40 mA MC79L12AC, AB Symbol Min Typ Max Min Typ Max Unit VO Regline -11.1 -12 -12.9 -11.5 -12 -12.5 Vdc mV - - - - 250 200 - - - - 250 200 - - - - 100 50 - - - - 100 50 -10.8 -10.8 - - -13.2 -13.2 -11.4 -11.4 - - -12.6 -12.6 - - - - 6.5 6.0 - - - - 6.5 6.0 - - - - 1.5 0.2 - - - - 1.5 0.2 Regload mV Output Voltage -14.5 Vdc VI -27 Vdc, 1.0 mA IO 40 mA VI = -19 Vdc, 1.0 mA IO 70 mA Input Bias Current (TJ = +25C) (TJ = +125C) Input Bias Current Change -16 Vdc VI -27 Vdc 1.0 mA IO 40 mA VO Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) Ripple Rejection (-15 VI -25 Vdc, f = 120 Hz, TJ = +25C) Dropout Voltage (IO = 40 mA, TJ = +25C) Vn - 80 - - 80 - V RR 36 42 - 37 42 - dB |VI-VO| - 1.7 - - 1.7 - Vdc 2 Vdc IIB mA IIB mA MOTOROLA ANALOG IC DEVICE DATA MC79L00, A Series ELECTRICAL CHARACTERISTICS (VI = -23 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, -40C < TJ +125C (for MC79LXXAB), 0C < TJ < +125C (for MC79LXXAC)). MC79L15C Characteristics MC79L15AC, AB Symbol Min Typ Max Min Typ Max Unit Output Voltage (TJ = +25C) VO -13.8 -15 -16.2 -14.4 -15 -15.6 Vdc Input Regulation (TJ = +25C) -17.5 Vdc VI -30 Vdc -20 Vdc VI -30 Vdc Regline Load Regulation TJ = +25C, 1.0 mA IO 100 mA 1.0 mA IO 40 mA Regload Output Voltage -17.5 Vdc VI -Vdc, 1.0 mA IO 40 mA VI = -23 Vdc, 1.0 mA IO 70 mA VO Input Bias Current (TJ = +25C) (TJ = +125C) IIB mV - - - - 300 250 - - - - 300 250 - - - - 150 75 - - - - 150 75 -13.5 -13.5 - - -16.5 -16.5 -14.25 -14.25 - - -15.75 -15.75 - - - - 6.5 6.0 - - - - 6.5 6.0 - - - - 1.5 0.2 - - - - 1.5 0.1 mV Vdc mA Input Bias Current Change -20 Vdc VI -30 Vdc 1.0 mA IO 40 mA IIB Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) VN - 90 - - 90 - V Ripple Rejection (-18.5 VI -28.5 Vdc, f = 120 Hz) RR 33 39 - 34 39 - dB |VI-VO| - 1.7 - - 1.7 - Vdc Dropout Voltage IO = 40 mA, TJ = +25C mA ELECTRICAL CHARACTERISTICS (VI = -27 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, 0C < TJ > +125C, unless otherwise noted). MC79L18C Characteristics MC79L18AC Symbol Min Typ Max Min Typ Max Unit Output Voltage (TJ = +25C) VO -16.6 -18 -19.4 -17.3 -18 -18.7 Vdc Input Regulation (TJ = +25C) -20.7 Vdc VI -33 Vdc -21.4 Vdc VI -33 Vdc -22 Vdc VI -33 Vdc -21 Vdc VI -33 Vdc Regline Load Regulation TJ = +25C, 1.0 mA IO 100 mA 1.0 mA IO 40 mA Regload mV - - - - - - - - - 325 275 - - - - - - - - - 325 - - 275 - - - - 170 85 - - - - 170 85 - - - - -19.8 -19.8 -17.1 - -17.1 - - - -18.9 - -18.9 - - - - 6.5 6.0 - - - - 6.5 6.0 - - - - - - - 1.5 0.2 - - - - - - 1.5 - 0.1 mV Output Voltage -20.7 Vdc VI -33 Vdc, 1.0 mA IO 40 mA -21.4 Vdc VI -33 Vdc, 1.0 mA IO 40 mA VI = -27 Vdc, 1.0 mA IO 70 mA VO Input Bias Current (TJ = +25C) (TJ = +125C) IIB Input Bias Current Change -21 Vdc VI -33 Vdc -27 Vdc VI -33 Vdc 1.0 mA IO 40 mA IIB Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) Vn - 150 - - 150 - V Ripple Rejection (-23 VI -33 Vdc, f = 120 Hz, TJ = +25C) RR 32 46 - 33 48 - dB |VI-VO| - 1.7 - - 1.7 - Vdc Dropout Voltage IO = 40 mA, TJ = +25C MOTOROLA ANALOG IC DEVICE DATA Vdc - -16.2 -16.2 mA mA 3 MC79L00, A Series ELECTRICAL CHARACTERISTICS (VI = -33 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, 0C < TJ < +125C, unless otherwise noted). MC79L24C Characteristics MC79L24AC Symbol Min Typ Max Min Typ Max Unit Output Voltage (TJ = +25C) VO -22.1 -24 -25.9 -23 -24 -25 Vdc Input Regulation (TJ = +25C) -27 Vdc VI -38 Vdc -27.5 Vdc VI -38 Vdc -28 Vdc VI -38 Vdc Regline Load Regulation TJ = +25C, 1.0 mA IO 100 mA 1.0 mA IO 40 mA Regload Output Voltage -27 Vdc VI -38 V, 1.0 mA IO 40 mA -28 Vdc VI -38 Vdc, 1.0 mA IO 40 mA VI = -33 Vdc, 1.0 mA IO 70 mA VO Input Bias Current (TJ = +25C) (TJ = +125C) IIB mV - - - - - - - 350 300 - - - - - - 350 - 300 - - - - 200 100 - - - - 200 100 - -21.4 -21.4 - - - - -26.4 -26.4 -22.8 - -22.8 - - - -25.2 - -25.2 - - - - 6.5 6.0 - - - - 6.5 6.0 - - - - 1.5 0.2 - - - - 1.5 0.1 mV Vdc mA IIB Input Bias Current Change -28 Vdc VI -38 Vdc 1.0 mA IO 40 mA mA Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) Vn - 200 - - 200 - V Ripple Rejection (-29 VI -35 Vdc, f = 120 Hz, TJ = +25C) RR 30 43 - 31 47 - dB |VI-VO| - 1.7 - - 1.7 - Vdc Dropout Voltage IO = 40 mA, TJ = +25C APPLICATIONS INFORMATION Design Considerations The MC79L00, A Series of fixed voltage regulators are designed with Thermal Overload Protections 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. 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 length, 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 F or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulator's 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 1. Positive and Negative Regulator Figure 2. Standard Application Input +Vin +VO MC78LXX 0.1F 0.33F CI* 0.33F Output MC79LXX CO** 0.1F 0.1F -Vin 0.33F MC79LXX -VO A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0 V above the output voltage even during the low point on the ripple voltage. * CI is required if regulator is located an appreciable * distance from the power supply filter ** CO improves stability and transient response. 4 MOTOROLA ANALOG IC DEVICE DATA MC79L00, A Series TYPICAL CHARACTERISTICS (TA = +25C, unless otherwise noted.) Figure 4. Dropout Voltage versus Junction Temperature Figure 3. Dropout Characteristics MC79L05C VO = -5.0 V TJ = 25C 6.0 IO = 1.0 mA 4.0 IO = 100 mA 2.0 IO = 40 mA 0 0 -2.0 -4.0 -6.0 Vin, INPUT VOLTAGE (V) -0.8 -2.5 V I -V O , INPUT/OUTPUT DIFFERENTIAL VOLTAGE (V) -2.0 IO = 70 mA IO = 40 mA -1.5 IO = 1.0 mA -1.0 Dropout of Regulation is defined when VO = 2% of VO -0.5 0 -10 0 25 Figure 5. Input Bias Current versus Ambient Temperature I IB , INPUT BIAS CURRENT (mA) I IB , INPUT BIAS CURRENT (mA) 5.0 4.0 3.8 3.6 3.4 MC79L05C Vin = -10 V VO = -5.0 V IO = 40 mA 3.2 3.0 0 0 25 50 75 100 TA, AMBIENT TEMPERATURE (C) 4.0 3.0 MC79L05C VO = -5.0 V IO = 40 mA 2.0 1.0 0 125 Figure 7. Maximum Average Power Dissipation versus Ambient Temperature (TO-92) 0 -5.0 -10 -15 -20 -25 -30 Vin, INPUT VOLTAGE (V) -35 170 RJA , THERMAL RESISTANCE JUNCTION-TO-AIR (C/W) 1,000 No Heatsink 100 RJA = 200C/W PD(max) to 25C = 625 mW 25 50 75 100 125 TA, AMBIENT TEMPERATURE (C) MOTOROLA ANALOG IC DEVICE DATA 3.2 150 2.8 PD(max) for TA = +50C 130 2.4 III III III III III III III 110 Graph represents symmetrical layout 90 L 70 2.0 oz. Copper L 50 0 10 20 30 L, LENGTH OF COPPER (mm) 2.0 1.6 1.2 3.0 mm RJA 30 150 -40 Figure 8. SOP-8 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length 10,000 P D , POWER DISSIPATION (mW) 125 Figure 6. Input Bias Current versus Input Voltage 4.2 10 50 75 100 TJ, JUNCTION TEMPERATURE (C) 40 0.8 0.4 50 PD, MAXIMUM POWER DISSIPATION (W) VO , OUTPUT VOLTAGE (V) 8.0 5 MC79L00, A Series OUTLINE DIMENSIONS A P SUFFIX PLASTIC PACKAGE CASE 29-04 ISSUE AD B NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. CONTOUR OF PACKAGE BEYOND DIMENSION R IS UNCONTROLLED. 4. DIMENSION F APPLIES BETWEEN P AND L. DIMENSION D AND J APPLY BETWEEN L AND K MINIMUM. LEAD DIMENSION IS UNCONTROLLED IN P AND BEYOND DIMENSION K MINIMUM. R P L F SEATING PLANE K DIM A B C D F G H J K L N P R V D X X G J H V C SECTION X-X 1 N N INCHES MIN MAX 0.175 0.205 0.170 0.210 0.125 0.165 0.016 0.022 0.016 0.019 0.045 0.055 0.095 0.105 0.015 0.020 0.500 --- 0.250 --- 0.080 0.105 --- 0.100 0.115 --- 0.135 --- MILLIMETERS MIN MAX 4.45 5.20 4.32 5.33 3.18 4.19 0.41 0.55 0.41 0.48 1.15 1.39 2.42 2.66 0.39 0.50 12.70 --- 6.35 --- 2.04 2.66 --- 2.54 2.93 --- 3.43 --- D SUFFIX PLASTIC PACKAGE CASE 751-05 (SOP-8) ISSUE R D A NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. DIMENSIONS ARE IN MILLIMETERS. 3. DIMENSION D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE MOLD PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE B DIMENSION AT MAXIMUM MATERIAL CONDITION. C 8 5 0.25 H E M B M 1 4 h B X 45 _ e q A C SEATING PLANE L 0.10 A1 B 0.25 M C B S A S DIM A A1 B C D E e H h L q MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.18 0.25 4.80 5.00 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.25 0_ 7_ 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 specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. 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Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1-800-441-2447 or 602-303-5454 JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 03-81-3521-8315 MFAX: RMFAX0@email.sps.mot.com - TOUCHTONE 602-244-6609 INTERNET: http://Design-NET.com ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298 6 *MC79L00/D* MOTOROLA ANALOG IC DEVICE DATA MC79L00/D