(KA79LxxAx) LINEAR INTEGRATED CIRCUIT

www.fairchildsemi.com KA79LXXA 3-Terminal 0.1A Negative Voltage Regulator Features • • • • • • Output Current up to 100mA No External Components Internal Thermal Over Load Protection Internal Short Circuit Current Limiting Output Voltage Offered in ±5% Tolerance Output Voltage of -5V, -8V, -12V, -15V, -18V and -24V Description These regulators employ internal current limiting and thermal shutdown, making them essentially indestructible. TO-92 SOT-89 1 1 1.GND 2.Input 3.Output 8-SOP 1 1. Output 2.3.6.7. Input 5. GND 4.8. NC Internal Block Diagram Q10 Q11 R26 Q12 R15 R22 Q5 D3 R23+R21 D2 R18 Q15 Q6 Q7 R Q4 Q17 C1 Q16 Q14 R28 R24 Q13 R25 Q9 R29 R7 R17 R16 Q8 Q1 R1 R2 D1 Q2 Q3 R6 R3 R4 R5 Rev. 1.0.2 ©2002 Fairchild Semiconductor Corporation KA79LXXA Absolute Maximum Ratings Parameter Input Voltage (for Vo= -5V to -8V) (for Vo = -12V to -18V) (for Vo = -24V) Operating Temperature Range Storage Temperature Range Symbol VI TOPR TSTG Value -30 -35 -40 0 ~ +125 -65 ~ +150 Unit V °C °C Electrical Characteristics(KA79L05A) (VI = -10V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage Quiescent Current Quiescent Current Change Output Noise Voltage Ripple Rejection Dropout Voltage With Line With Load Symbol VO ∆VO ∆VO VO IQ ∆IQ ∆IQ VN RR VD TJ = +25°C TJ =+25°C TJ =+25°C -7.0V ≥ VI ≥ -20V -8V ≥ VI ≥ -20V 1.0mA ≤ IO ≤ 100mA 1.0mA ≤ IO ≤ 40mA Conditions Min. -4.8 -4.75 -4.75 41 Typ. -5.0 15 20 10 2.0 30 60 1.7 Max. -5.2 150 100 60 30 -5.25 -5.25 5.5 6.0 1.5 0.1 Unit V mV mV mV mV V V mA mA mA µV dB V -7.0V ≥ VI ≥ -20V, 1.0mA ≤ IO ≤ 40mA VI = -10V, 1.0mA≤ IO ≤ 70mA TJ =+25°C TJ = +125°C -8V ≥ VI ≥ -20V 1.0mA ≤ IO ≤ 40mA TA = +25°C,10Hz ≤ f ≤ 100kHz f = 120Hz, -8V ≥ VI ≥ -18V , TJ = +25°C TJ = +25°C Note 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 2 KA79LXXA Electrical Characteristics (KA79L08A) (Continued) (VI = -14V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage Quiescent Current Quiescent Current Change Output Noise Voltage Ripple Rejection Dropout Voltage With Line With Load Symbol VO ∆VO ∆VO VO IQ ∆IQ VN RR VD TJ = +25°C TJ =+25°C TJ =+25°C -10.3V ≥ VI ≥ -23V -12V ≥ VI ≥ -23V 1.0mA ≤ Io ≤ 100mA 1.0mA ≤ Io ≤ 40mA Conditions Min. -7.7 -7.6 -7.6 39 Typ. -8.0 50 55 1.7 Max. Unit -8.3 175 125 80 40 -8.4 -8.4 6.0 5.5 1.5 0.1 V mV mV mV mV V mA mA mA µV dB V -10.3V ≥ VI ≥ -23V, 1.0mA ≤ Io ≤ 40mA VI = -14V, 1.0mA ≤ Io ≤ 70mA Tj =+25°C Tj = +125°C -11.7V ≥ VI ≥ -23V 1.0mA ≤ Io ≤ 40mA Tj = +25°C,10Hz ≤ f ≤ 100kHz f = 120Hz, -11V ≥ VI ≥ -21V , Tj = +25°C Tj = +25°C Note 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 3 KA79LXXA Electrical Characteristics(KA79L12A) (Continued) (VI = -19V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage Quiescent Current Quiescent Current Change Output Noise Voltage Ripple Rejection Dropout Voltage With Line With Load Symbol VO ∆VO ∆VO VO IQ ∆IQ ∆IQ VN RR VD TJ = +25°C TJ = +25°C TJ = +25°C -14.5V ≥ VI ≥ -27V -16V ≥ VI ≥ -27V 1.0mA ≤ IO ≤ 100mA 1.0mA ≤ IO ≤ 40mA Conditions Min. -11.4 -11.4 37 Typ. 80 42 1.7 Max. 250 200 100 50 -12.6 -12.6 6.0 6.5 1.5 0.1 Unit V mV mV mV mV V V mA mA mA µV dB V -11.5 -12.0 -12.5 -14.5V >VI > -27V, 1.0mA ≤ IO ≤ 40mA VI = -19V, 1.0mA ≤ IO ≤ 70mA TJ = +25°C TJ = +125°C -16V ≥ VI ≥ -27V 1.0mA ≤ IO ≤ 40mA TA = +25°C,10Hz ≤ f ≤ 100kHz f = 120Hz, -15V ≥ VI ≥ -25V TJ = +25°C TJ = +25°C Note 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 4 KA79LXXA Electrical Characteristics(KA79L15A) (Continued) (VI = -23V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage Quiescent Current Quiescent Current Change Output Noise Voltage Ripple Rejection Dropout Voltage With Line With Load Symbol VO ∆VO ∆VO VO IQ ∆IQ ∆IQ VN RR VD TJ = +25°C TJ = +25°C TJ = +25°C -17.5V ≥ VI ≥ -30V -20V ≥ VI ≥ -30V 1.0mA ≤ IO ≤ 100mA 1.0mA ≤ IO ≤ 40mA Conditions Min. -14.25 34 Typ. 90 39 1.7 Max. 300 250 150 75 -15.75 -15.75 6.0 6.5 1.5 0.1 Unit V mV mV mV mV V V mA mA mA µV dB V -14.4 -15.0 -15.6 -17.5V ≥ VI ≥ -30V, 1.0mA ≤ IO ≤ 40mA -14.25 VI = -23V, 1.0mA ≤ IO ≤ 70mA TJ = +25°C TJ = +125°C -20V ≥ VI ≥ -30V 1.0mA ≤ IO ≤ 40mA TA = +25°C,10Hz ≤ f ≤ 100kHz f = 120Hz, -18.5V ≥ VI ≥ -28.5V TJ = +25°C TJ = +25°C Note 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 5 KA79LXXA Electrical Characteristics(KA79L18A) (Continued) (VI = -27V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage Quiescent Current Quiescent Current Change Output Noise Voltage Ripple Rejection Dropout Voltage With Line With Load Symbol VO ∆VO ∆VO VO IQ ∆IQ ∆IQ VN RR VD TJ = +25°C TJ = +25°C TJ = +25°C -20.7V ≥ VI ≥ -33V -21V ≥ VI ≥ -33V 1.0mA ≤ IO ≤ 100mA 1.0mA ≤ IO ≤ 40mA Conditions Min. Typ. -17.1 33 150 48 1.7 Max. 325 275 170 85 -18.9 -18.9 6.5 6.0 1.5 0.1 Unit V mV mV mV mV V V mA mA mA µV dB V -17.3 -18.0 -18.7 -20.7V > VI > -33V, 1.0mA ≤ IO ≤ 40mA -17.1 VI = -27V, 1.0mA ≤ IO ≤ 70mA TJ = +25°C TJ = +125°C -21V ≥ VI ≥ -33V 1.0mA ≤ IO ≤ 40mA TA =+25°C,10Hz ≤ f ≤ 100kHz f = 120Hz, -23V ≥ VI ≥ -33V TJ = +25°C TJ = +25°C Note 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 6 KA79LXXA Electrical Characteristics(KA79L24A) (Continued) (VI = -33V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage Quiescent Current Quiescent Current Change Output Noise Voltage Ripple Rejection Dropout Voltage With Line With Load Symbol VO ∆VO ∆VO VO IQ ∆IQ ∆IQ VN RR VD TJ = +25°C TJ = +25°C TJ = +25°C -27V ≥ VI ≥ -38V -28V ≥ VI ≥ -38V 1.0mA ≤ IO ≤100mA 1.0mA ≤ IO ≤ 40mA Conditions Min. -23 -22.8 -22.8 31 Typ. -24 200 47 1.7 Max. -25 350 300 200 100 -25.2 -25.2 6.5 6.0 1.5 0.1 Unit V mV mV mV mV V V mA mA mA µV dB V -27V ≥ VI ≥ -38V, 1.0mA ≤ IO ≤ 40mA VI = -33V, 1.0mA ≤ IO ≤ 70mA TJ = +25°C TJ = +125°C -28V ≥ VI ≥ -38V 1.0mA ≤ IO ≤ 40mA TA = +25°C,10Hz ≤ f ≤100kHz f = 120Hz, -29V ≥ VI ≥ -35V TJ = +25°C TJ = +25°C Note 1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used. 7 KA79LXXA Typical Application Design Considerations The KA79LXXA Series of fixed voltage regulators are designed with Thermal Overload Protection 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 lengths, 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 0.33µF 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. I Figure 1. Positive And Negative Regulator Figure 2. Typical Application A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input ripple voltage. * C1 is required if regulator is located an appreciable distance from power supply filter. * CO improves stability and transient response. 8 KA79LXXA Mechanical Dimensions Package Dimensions in millimeters TO-92 4.58 –0.15 +0.25 14.47 ±0.40 0.46 ±0.10 4.58 ±0.20 1.27TYP [1.27 ±0.20] 3.60 ±0.20 1.27TYP [1.27 ±0.20] 0.38 –0.05 +0.10 3.86MAX 1.02 ±0.10 0.38 –0.05 +0.10 (R2.29) (0.25) 9 KA79LXXA Mechanical Dimensions (Continued) Package Dimensions in millimeters 8-SOP MIN 1.55 ±0.20 0.061 ±0.008 0.1~0.25 0.004~0.001 #1 #8 4.92 ±0.20 0.194 ±0.008 5.13 MAX 0.202 ( #4 #5 6.00 ±0.30 0.236 ±0.012 +0.10 0.15 -0.05 +0.004 0.006 -0.002 0.56 ) 0.022 1.80 MAX 0.071 MAX0.10 MAX0.004 3.95 ±0.20 0.156 ±0.008 5.72 0.225 0.50 ±0.20 0.020 ±0.008