www.fairchildsemi.com KA79LXXA 3-Terminal 0.1A Negative Voltage Regulator Boca Semiconductor Corp. BSC http://www.bocasemi.com Features Description * * * * * * These regulators employ internal current limiting and thermal shutdown, making them essentially indestructible. 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 TO-92 SOT-89 1 1 1.GND 2.Input 3.Output 8-SOP 1 1. Output 2.3.6.7. GND 4.5. NC 8. Input Internal Block Diagram Output Input http://www.bocasemi.com Rev. 1.0.1 (c)2001 Fairchild Semiconductor Corporation KA79LXXA Absolute Maximum Ratings Parameter Symbol Value Unit VI -30 -35 -40 V Operating Temperature Range TOPR 0 ~ +125 C Storage Temperature Range TSTG -65 ~ +150 C Input Voltage (for Vo= -5V to -8V) (for Vo= -12V to -18V) (for Vo= -24V) Electrical Characteristics(KA79L05A) (VI = -10V, IO = 40mA, CI = 0.33F, CO = 0.1F, 0C TJ +125C, unless otherwise specified) Parameter Symbol Output Voltage VO Line Regulation (Note1) Load Regulation (Note1) Conditions TJ = +25 C - 5.0 - 5.2 V 15 150 mV -8V VI -20V - - 100 mV 1.0mA IO 100mA - 20 60 mV 1.0mA IO 40mA - 10 30 mV -7.0V VI -20V, 1.0mA IO 40mA - 4.75 - - 5.25 V VI = -10V, 1.0mA IO 70mA - 4.75 - - 5.25 V TJ =+ 25 C - 2.0 5.5 TJ = +125 C - - 6.0 TJ =+25 C IQ Unit - VO Quiescent Current Max. - 4.8 TJ =+25 C VO Typ. -7.0V VI -20V VO Output Voltage Min. mA with line IQ -8V VI -20V - - 1.5 mA with load IQ 1.0mA IO 40mA - - 0.1 mA Output Noise Voltage VN TA = +25C,10Hzf100KHz - 30 - V Ripple Rejection RR f = 120Hz, -8VVI -18V TJ = +25C 41 60 - dB Dropout Voltage VD TJ = +25C - 1.7 - V Quiescent Current Change 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) (VI = -14V, IO = 40mA, CI = 0.33F, CO = 0.1F, 0C TJ +125C, unless otherwise specified) Parameter Symbol Min. Typ. Max. Unit - 7.7 - 8.0 - 8.3 V -10.3V VI -23V - - 175 mV -12V VI -23V - - 125 mV 1.0mA Io 100mA - - 80 mV 1.0mA Io 40mA - - 40 mV -10.3V VI -23V, 1.0mA Io 40mA - 7.6 - - 8.4 VI = -14V, 1.0mA Io 70mA - 7.6 - - 8.4 Tj =+ 25 C - - 6.0 Tj = +125 C - - 5.5 -11.7V VI -23V - - 1.5 mA 1.0mA Io 40mA - - 0.1 mA VN Tj = +25C,10Hz f 100KHz - 50 - V Ripple Rejection RR f = 120Hz, -11V VI -21V Tj = +25C 39 55 - dB Dropout Voltage VD Tj = +25C - 1.7 - V Output Voltage Line Regulation (Note1) Load Regulation (Note1) VO TJ = +25 C VO TJ =+25 C VO TJ =+25 C Output Voltage VO Quiescent Current IQ Quiescent Current Change with line with load Output Noise Voltage Conditions IQ V mA 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) (VI = -19V, IO = 40mA, CI = 0.33F, CO = 0.1F, 0C TJ +125C, unless otherwise specified) Parameter Symbol Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage VO TJ = +25 C VO TJ = +25 C VO TJ = +25 C VO Quiescent Current Conditions IQ Min. Typ. Max. -11.5 -12.0 -12.5 Unit V -14.5V VI -27V - - 250 mV -16VVI -27V - - 200 mV 1.0mA IO 100mA - - 100 mV 1.0mA IO 40mA - - 50 mV -14.5V >VI > -27V, 1.0mA IO 40mA -11.4 - -12.6 V VI = -19V, 1.0mA IO 70mA V -11.4 - -12.6 TJ = +25 C - - 6.0 TJ = +125 C - - 6.5 mA with line IQ -16V VI -27V - - 1.5 mA with load IQ 1.0mA IO 40mA - - 0.1 mA VN TA = +25C,10Hz f 100KHz - 80 - V Ripple Rejection RR f = 120Hz, -15V VI -25V TJ = +25C 37 42 - dB Dropout Voltage VD TJ = +25C - 1.7 - V Quiescent Current Change Output Noise Voltage 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) (VI = -23V, IO = 40mA, CI = 0.33F, CO = 0.1F, 0C TJ +125C, unless otherwise specified) Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage Quiescent Current Symbol Conditions VO TJ = +25 C VO TJ = +25 C VO TJ = +25 C VO IQ Min. Typ. Max. -14.4 -15.0 -15.6 Unit V -17.5V VI -30V - - 300 mV -20V VI -30V - - 250 mV 1.0mA IO 100mA - - 150 mV 1.0mA IO 40mA - - 75 mV -17.5V VI -30V, 1.0mA IO 40mA -14.25 - -15.75 V VI = -23V, 1.0mA IO 70mA V -14.25 - -15.75 TJ = +25C - - 6.0 TJ = +125C - - 6.5 mA Quiescent Current with line Change with load IQ -20V VI -30V - - 1.5 mA IQ 1.0mA IO 40mA - - 0.1 mA Output Noise Voltage VN TA = +25C,10Hz f 100KHz - 90 - V Ripple Rejection RR f = 120Hz, -18.5V VI -28.5V TJ = +25C 34 39 - dB Dropout Voltage VD TJ = +25C - 1.7 - V 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) (VI = -27V, IO = 40mA, CI = 0.33F, CO = 0.1F, 0C TJ +125C, unless otherwise specified) Parameter Symbol Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage VO TJ = +25 C VO TJ = +25 C VO TJ = +25 C VO Quiescent Current Conditions IQ Min. Typ. Max. -17.3 -18.0 -18.7 Unit V -20.7V VI -33V - - 325 mV -21V VI -33V - - 275 mV 1.0mA IO 100mA - - 170 mV 1.0mA IO 40mA - - 85 mV -20.7V > VI > -33V, 1.0mA IO 40mA -17.1 - -18.9 V VI = -27V, 1.0mA IO 70mA V -17.1 - -18.9 TJ = +25C - - 6.5 TJ = +125C - - 6.0 mA with line IQ -21V VI -33V - - 1.5 mA with load IQ 1.0mA IO 40mA - - 0.1 mA VN TA =+25C,10Hz f 100KHz - 150 - V Ripple Rejection RR f = 120Hz, -23V VI -33V TJ = +25C 33 48 - dB Dropout Voltage VD TJ = +25C - 1.7 - V Quiescent Current Change Output Noise Voltage 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) (VI = -33V, IO = 40mA, CI = 0.33F, CO = 0.1F, 0C TJ +125C, unless otherwise specified) Parameter Symbol Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage Min. Typ. Max. Unit -23 -24 -25 V -27V VI -38V - - 350 mV -28V VI -38V - - 300 mV 1.0mA IO 100mA - - 200 mV 1.0mA IO 40mA - - 100 mV -27V VI -38V, 1.0mA IO 40mA -22.8 - -25.2 V VI = -33V, 1.0mA IO 70mA V VO TJ = +25 C VO TJ = +25 C VO TJ = +25 C VO Quiescent Current Conditions IQ -22.8 - -25.2 TJ = +25C - - 6.5 TJ = +125C - - 6.0 mA with line IQ -28V VI -38V - - 1.5 mA with load IQ 1.0mA IO 40mA - - 0.1 mA VN TA = +25C,10Hz f 100KHz - 200 - V Ripple Rejection RR f = 120Hz, -29V VI -35V TJ = +25C 31 47 - dB Dropout Voltage VD TJ = +25C - 1.7 - V Quiescent Current Change Output Noise Voltage 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 0.33F 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 TO-92 +0.25 4.58 0.20 4.58 -0.15 14.47 0.40 0.46 0.10 1.27TYP [1.27 0.20] 1.27TYP [1.27 0.20] +0.10 0.38 -0.05 (0.25) +0.10 0.38 -0.05 1.02 0.10 3.86MAX 3.60 0.20 (R2.29) 9 KA79LXXA Mechanical Dimensions(Continued) Package 8-SOP MIN #5 10 0~ 8 +0.10 0.15 -0.05 +0.004 0.006 -0.002 3.95 0.20 0.156 0.008 5.72 0.225 0.50 0.20 0.020 0.008 1.80 MAX 0.071 MAX0.10 MAX0.004 6.00 0.30 0.236 0.012 0.41 0.10 0.016 0.004 #4 1.27 0.050 #8 5.13 MAX 0.202 #1 4.92 0.20 0.194 0.008 ( 0.56 ) 0.022 1.55 0.20 0.061 0.008 0.1~0.25 0.004~0.001 KA79LXXA Mechanical Dimensions (Continued) Package SOT-89 1.50 0.20 4.50 0.20 (0.40) (1.10) 2.50 0.20 C0.2 4.10 0.20 (0.50) 1.65 0.10 0.50 0.10 0.40 0.10 0.40 +0.10 -0.05 1.50 TYP 1.50 TYP 11 KA79LXXA Ordering Information Product Number Package Operating Temperature KA79L05AZ KA79L08AZ KA79L12AZ KA79L15AZ TO-92 0 ~ + 125C KA79L18AZ KA79L24AZ KA79L05AD 8-SOP KA79L05AM SOT-89 12 http://www.bocasemi.com