www.fairchildsemi.com KA79LXXA 3-Terminal 0.1A Negative Voltage Regulator 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 Rev. 1.0.1 ©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 = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, 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 = +25°C,10Hz≤f≤100KHz - 30 - µV Ripple Rejection RR f = 120Hz, -8V≥VI ≥-18V TJ = +25°C 41 60 - dB Dropout Voltage VD TJ = +25°C - 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 = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, 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 = +25°C,10Hz ≤ f ≤ 100KHz - 50 - µV Ripple Rejection RR f = 120Hz, -11V ≥ VI ≥ -21V Tj = +25°C 39 55 - dB Dropout Voltage VD Tj = +25°C - 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 = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, 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 -16V≥VI ≥-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 = +25°C,10Hz ≤ f ≤ 100KHz - 80 - µV Ripple Rejection RR f = 120Hz, -15V ≥ VI ≥ -25V TJ = +25°C 37 42 - dB Dropout Voltage VD TJ = +25°C - 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 = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified) Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Output Voltage Quiescent Current 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 = +25°C - - 6.0 TJ = +125°C - - 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 = +25°C,10Hz ≤ f ≤ 100KHz - 90 - µV Ripple Rejection RR f = 120Hz, -18.5V ≥ VI ≥ -28.5V TJ = +25°C 34 39 - dB Dropout Voltage VD TJ = +25°C - 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 = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, 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 = +25°C - - 6.5 TJ = +125°C - - 6.0 mA with line ∆IQ -21V ≥ VI ≥ -33V - - 1.5 mA with load ∆IQ 1.0mA ≤ IO ≤ 40mA - - 0.1 mA VN TA =+25°C,10Hz ≤ f ≤ 100KHz - 150 - µV Ripple Rejection RR f = 120Hz, -23V ≥ VI ≥ -33V TJ = +25°C 33 48 - dB Dropout Voltage VD TJ = +25°C - 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 = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, 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 = +25°C - - 6.5 TJ = +125°C - - 6.0 mA with line ∆IQ -28V ≥ VI ≥ -38V - - 1.5 mA with load ∆IQ 1.0mA ≤ IO ≤ 40mA - - 0.1 mA VN TA = +25°C,10Hz ≤ f ≤100KHz - 200 - µV Ripple Rejection RR f = 120Hz, -29V ≥ VI ≥ -35V TJ = +25°C 31 47 - dB Dropout Voltage VD TJ = +25°C - 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 0.33µF 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 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 ~ + 125°C KA79L18AZ KA79L24AZ 12 KA79L05AD 8-SOP KA79L05AM SOT-89 KA79LXXA 13 KA79LXXA DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 6/11/01 0.0m 001 Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components.