MC79L12C

ON Semiconductort 100 mA Negative Voltage Regulators 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 • Low Cost • Complementary Positive Regulators Offered (MC78L00 Series) • Available in Either ±5% (AC) or ±10% (C) Selections MC79L00, MC79L00A Series THREE–TERMINAL LOW CURRENT NEGATIVE FIXED VOLTAGE REGULATORS SEMICONDUCTOR TECHNICAL DATA P SUFFIX PLASTIC PACKAGE CASE 29 Pin 1. Ground 2. Input 3. Output 1 2 3 8 1 D SUFFIX PLASTIC PACKAGE CASE 751 (SOP–8)* Vout Vin Vin NC 5. 6. 7. 8. GND Vin Vin NC Pin 1. 2. 3. 4. Representative Schematic Diagram Gnd Q10 Q5 Q4 R7 Q8 Q14 Q9 Q1 R2 Z1 R3 C Q6 R10 R11 Q7 Q2 Q11 R14 R15 Input * Automotive temperature range selections are available with special test conditions and additional tests in 5, 12 and 15 V devices. Contact your local ON Semiconductor sales office for information. R4 Q12 R16 Output Q13 R9 R17 R1 R 5 R18 R6 R8 *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. Device No. ±10% MC79L05C MC79L12C MC79L15C MC79L18C MC79L24C Device No. 5% MC79L05AC MC79L12AC MC79L15AC MC79L18AC MC79L24AC Nominal Voltage –5.0 –12 –15 –18 –24 ORDERING INFORMATION Device MC79LXXACD* MC79LXXACP MC79LXXCP MC79LXXABD* MC79LXXABP* TJ = –40° to +125°C TJ = 0° to +125°C Operating Temperature Range Package SOP–8 Plastic Power Plastic Power SOP–8 Plastic Power XX indicates nominal voltage © Semiconductor Components Industries, LLC, 2002 1 January, 2002 – Rev. 4 Publication Order Number: MC79L00/D MC79L00, MC79L00A Series MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.) Rating Input Voltage (–5 V) Input Voltage (–12, –15, –18 V) Input Voltage (–24 V) Storage Temperature Range Junction Temperature 0°C < TJ < +125°C (for MC79LXXAC)). Characteristics Output Voltage (TJ = +25°C) Input Regulation (TJ = +25°C) –7.0 Vdc ≥ VI ≥ –20 Vdc –8.0 Vdc ≥ VI ≥ –20 Vdc Load Regulation TJ = +25°C, 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 = +25°C) (TJ = +125°C) Input Bias Current Change –8.0 Vdc ≥ VI ≥ –20 Vdc 1.0 mA ≤ IO ≤ 40 mA Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Ripple Rejection (–8.0 ≥ VI ≥ –18 Vdc, f = 120 Hz, TJ = +25°C) Dropout Voltage (IO = 40 mA, TJ = +25°C) 0°C < TJ < +125°C (for MC79LXXAB)). Characteristics Output Voltage (TJ = +25°C) Input Regulation (TJ = +25°C) –14.5 Vdc ≥ VI ≥ –27 Vdc –16 Vdc ≥ VI ≥ –27 Vdc Load Regulation TJ = +25°C, 1.0 mA ≤ IO ≤ 100 mA 1.0 mA ≤ IO ≤ 40 mA 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 = +25°C) (TJ = +125°C) Input Bias Current Change –16 Vdc ≥ VI ≥ –27 Vdc 1.0 mA ≤ IO ≤ 40 mA Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Ripple Rejection (–15 ≤ VI ≤ –25 Vdc, f = 120 Hz, TJ = +25°C) Dropout Voltage (IO = 40 mA, TJ = +25°C) Symbol VI Value –30 –35 –40 –65 to +150 +150 Unit Vdc Tstg TJ °C °C ELECTRICAL CHARACTERISTICS (VI = –10 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, –40°C < TJ +125°C (for MC79LXXAB), MC79L05C, AB Symbol VO Regline – – Regload – – VO –4.5 –4.5 IIB – – IIB – – Vn RR |VI–VO| – 40 – – – 40 49 1.7 1.5 0.2 – – – – – – 41 – – – 40 49 1.7 1.5 0.1 – – – µV dB Vdc – – 6.0 5.5 – – – – 6.0 5.5 mA – – –5.5 –5.5 –4.75 –4.75 – – –5.25 –5.25 mA – – 60 30 – – – – 60 30 Vdc – – 200 150 – – – – 150 100 mV Min –4.6 Typ –5.0 Max –5.4 MC79L05AC, AB Min –4.8 Typ –5.0 Max –5.2 Unit Vdc mV ELECTRICAL CHARACTERISTICS (VI = –19 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, –40°C < TJ +125°C (for MC79LXXAC), MC79L12C, AB Symbol VO Regline – – Regload – – VO –10.8 –10.8 IIB – – IIB – – Vn RR |VI–VO| – 36 – – – 80 42 1.7 1.5 0.2 – – – – – – 37 – – – 80 42 1.7 1.5 0.2 – – – µV dB Vdc – – 6.5 6.0 – – – – 6.5 6.0 mA – – –13.2 –13.2 –11.4 –11.4 – – –12.6 –12.6 mA – – 100 50 – – – – 100 50 Vdc – – 250 200 – – – – 250 200 mV Min –11.1 Typ –12 Max –12.9 MC79L12AC, AB Min –11.5 Typ –12 Max –12.5 Unit Vdc mV http://onsemi.com 2 MC79L00, MC79L00A Series ELECTRICAL CHARACTERISTICS (VI = –23 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, –40°C < TJ +125°C (for MC79LXXAB), 0°C < TJ < +125°C (for MC79LXXAC)). MC79L15C Characteristics Output Voltage (TJ = +25°C) Input Regulation (TJ = +25°C) –17.5 Vdc ≥ VI ≥ –30 Vdc –20 Vdc ≥ VI ≥ –30 Vdc Load Regulation TJ = +25°C, 1.0 mA ≤ IO ≤ 100 mA 1.0 mA ≤ IO ≤ 40 mA Output Voltage –17.5 Vdc ≥ VI ≥ –Vdc, 1.0 mA ≤ IO ≤ 40 mA VI = –23 Vdc, 1.0 mA ≤ IO ≤ 70 mA Input Bias Current (TJ = +25°C) (TJ = +125°C) Input Bias Current Change –20 Vdc ≥ VI ≥ –30 Vdc 1.0 mA ≤ IO ≤ 40 mA Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Ripple Rejection (–18.5 ≤ VI ≤ –28.5 Vdc, f = 120 Hz) Dropout Voltage IO = 40 mA, TJ = +25°C Symbol VO Regline – – Regload – – VO –13.5 –13.5 IIB – – ∆IIB – – VN RR |VI–VO| – 33 – – – 90 39 1.7 1.5 0.2 – – – – – – 34 – – – 90 39 1.7 1.5 0.1 – – – µV dB Vdc – – 6.5 6.0 – – – – 6.5 6.0 mA – – –16.5 –16.5 –14.25 –14.25 – – –15.75 –15.75 mA – – 150 75 – – – – 150 75 Vdc – – 300 250 – – – – 300 250 mV Min –13.8 Typ –15 Max –16.2 MC79L15AC, AB Min –14.4 Typ –15 Max –15.6 Unit Vdc mV ELECTRICAL CHARACTERISTICS (VI = –27 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, 0°C < TJ > +125°C, unless otherwise noted). MC79L18C Characteristics Output Voltage (TJ = +25°C) Input Regulation (TJ = +25°C) –20.7 Vdc ≥ VI ≥ –33 Vdc –21.4 Vdc ≥ VI ≥ –33 Vdc –22 Vdc ≥ VI ≥ –33 Vdc –21 Vdc ≥ VI ≥ –33 Vdc Load Regulation TJ = +25°C, 1.0 mA ≤ IO ≤ 100 mA 1.0 mA ≤ IO ≤ 40 mA 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 Input Bias Current (TJ = +25°C) (TJ = +125°C) Input Bias Current Change –21 Vdc ≥ VI ≥ –33 Vdc –27 Vdc ≥ VI ≥ –33 Vdc 1.0 mA ≤ IO ≤ 40 mA Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Ripple Rejection (–23 ≤ VI ≤ –33 Vdc, f = 120 Hz, TJ = +25°C) Dropout Voltage IO = 40 mA, TJ = +25°C Symbol VO Regline – – – – Regload – – VO – –16.2 –16.2 IIB – – IIB – – – Vn RR |VI–VO| – 32 – – – – 150 46 1.7 – 1.5 0.2 – – – – – – – 33 – – – – 150 48 1.7 1.5 – 0.1 – – – µV dB Vdc – – 6.5 6.0 – – – – 6.5 6.0 mA – – – – –19.8 –19.8 –17.1 – –17.1 – – – –18.9 – –18.9 mA – – 170 85 – – – – 170 85 Vdc – – – – – 325 275 – – – – – – – – – 325 – – 275 mV Min –16.6 Typ –18 Max –19.4 Min –17.3 MC79L18AC Typ –18 Max –18.7 Unit Vdc mV http://onsemi.com 3 MC79L00, MC79L00A Series ELECTRICAL CHARACTERISTICS (VI = –33 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, 0°C < TJ < +125°C, unless otherwise noted). MC79L24C Characteristics Output Voltage (TJ = +25°C) Input Regulation (TJ = +25°C) –27 Vdc ≥ VI ≥ –38 Vdc –27.5 Vdc ≥ VI ≥ –38 Vdc –28 Vdc ≥ VI ≥ –38 Vdc Load Regulation TJ = +25°C, 1.0 mA ≤ IO ≤ 100 mA 1.0 mA ≤ IO ≤ 40 mA 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 Input Bias Current (TJ = +25°C) (TJ = +125°C) Input Bias Current Change –28 Vdc ≥ VI ≥ –38 Vdc 1.0 mA ≤ IO ≤ 40 mA Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Ripple Rejection (–29 ≤ VI ≤ –35 Vdc, f = 120 Hz, TJ = +25°C) Dropout Voltage IO = 40 mA, TJ = +25°C Symbol VO Regline – – – Regload – – VO – –21.4 –21.4 IIB – – ∆IIB – – Vn RR |VI–VO| – 30 – – – 200 43 1.7 1.5 0.2 – – – – – – 31 – – – 200 47 1.7 1.5 0.1 – – – µV dB Vdc – – 6.5 6.0 – – – – 6.5 6.0 mA – – – – –26.4 –26.4 –22.8 – –22.8 – – – –25.2 – –25.2 mA – – 200 100 – – – – 200 100 Vdc – – – – 350 300 – – – – – – 350 – 300 mV Min –22.1 Typ –24 Max –25.9 Min –23 MC79L24AC Typ –24 Max –25 Unit Vdc mV 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 µF 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. +Vin 0.33µF MC78LXX 0.1µF +VO Input CI* 0.33µF MC79LXX CO** 0.1µF Output 0.1µF -Vin 0.33µF 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. Figure 1. Positive and Negative Regulator http://onsemi.com 4 Figure 2. Standard Application MC79L00, MC79L00A Series TYPICAL CHARACTERISTICS (TA = +25°C, unless otherwise noted.) V I -V O , INPUT/OUTPUT DIFFERENTIAL VOLTAGE (V) 8.0 VO, OUTPUT VOLTAGE (V) MC79L05C VO = -5.0 V TJ = 25°C IO = 1.0 mA IO = 100 mA -2.5 -2.0 -1.5 IO = 1.0 mA -1.0 -0.5 0 Dropout of Regulation is defined when ∆VO = 2% of VO 0 25 50 75 100 TJ, JUNCTION TEMPERATURE (°C) 125 IO = 70 mA IO = 40 mA 6.0 4.0 2.0 IO = 40 mA 0 0 -2.0 -4.0 -6.0 Vin, INPUT VOLTAGE (V) -0.8 -10 Figure 3. Dropout Characteristics Figure 4. Dropout Voltage versus Junction Temperature 4.2 I IB , INPUT BIAS CURRENT (mA) 4.0 3.8 3.6 3.4 3.2 3.0 0 0 MC79L05C Vin = -10 V VO = -5.0 V IO = 40 mA 25 50 75 100 TA, AMBIENT TEMPERATURE (°C) 125 I IB , INPUT BIAS CURRENT (mA) 5.0 4.0 3.0 2.0 1.0 0 MC79L05C VO = -5.0 V IO = 40 mA 0 -5.0 -10 -15 -20 -25 -30 Vin, INPUT VOLTAGE (V) -35 -40 Figure 5. Input Bias Current versus Ambient Temperature Figure 6. Input Bias Current versus Input Voltage RθJA , THERMAL RESISTANCE JUNCTION-TO-AIR (°C/W) 150 130 110 90 70 50 30 0 10 RθJA P D , POWER DISSIPATION (mW) PD(max) for TA = +50°C 2.8 2.4 1,000 No Heatsink Graph represents symmetrical layout 2.0 1.6 1.2 0.8 0.4 50 100 RΘJA = 200°C/W PD(max) to 25°C = 625 mW 25 50 75 100 125 TA, AMBIENT TEMPERATURE (°C) 150 L 2.0 oz. Copper L 3.0 mm 10 20 30 L, LENGTH OF COPPER (mm) 40 Figure 7. Maximum Average Power Dissipation versus Ambient Temperature (TO–92) Figure 8. SOP–8 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length http://onsemi.com 5 PD, MAXIMUM POWER DISSIPATION (W) 10,000 170 3.2 ÎÎÎ Î ÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎ MC79L00, MC79L00A Series PACKAGE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 29–11 ISSUE AL NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. CONTOUR OF PACKAGE BEYOND DIMENSION R IS UNCONTROLLED. 4. LEAD DIMENSION IS UNCONTROLLED IN P AND BEYOND DIMENSION K MINIMUM. INCHES MIN MAX 0.175 0.205 0.170 0.210 0.125 0.165 0.016 0.021 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 0.407 0.533 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 --- A R P L SEATING PLANE B K XX G H V 1 D J C SECTION X–X N N DIM A B C D G H J K L N P R V http://onsemi.com 6 MC79L00, MC79L00A Series PACKAGE DIMENSIONS D SUFFIX PLASTIC PACKAGE CASE 751–07 ISSUE W –X– A 8 5 B 1 4 S 0.25 (0.010) M Y M –Y– G C –Z– H D 0.25 (0.010) M SEATING PLANE K NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM A B C D G H J K M N S MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.33 0.51 1.27 BSC 0.10 0.25 0.19 0.25 0.40 1.27 0_ 8_ 0.25 0.50 5.80 6.20 INCHES MIN MAX 0.189 0.197 0.150 0.157 0.053 0.069 0.013 0.020 0.050 BSC 0.004 0.010 0.007 0.010 0.016 0.050 0_ 8_ 0.010 0.020 0.228 0.244 N X 45 _ 0.10 (0.004) M J ZY S X S http://onsemi.com 7 MC79L00, MC79L00A Series ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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