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79L05 D D D D D D Negative-Voltage Regulators 3-Terminal Regulators Output Current Up to 100 mA No External Components Required Internal Thermal-Overload Protection Internal Short-Circuit Current Limiting Direct Replacement for Motorola MC79L00 Series C I OUTPUT INPUT COMMON O TO–92 79L05ACZ description This series of fixed negative-voltage integrated-circuit SOT-89 voltage regulators is designed for a wide range of COMMON INPUT OUTPUT 79L05CPK applications. These include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. In addition, they can be used to control series pass elements to make high-current voltage-regulator circuits. One of these regulators can deliver up to 100 mA of output current. The internal current-limiting and thermal-shutdown features make them essentially immune to overload. When used as a replacement for a zener-diode and resistor combination, these devices can provide ef fective improvement in output impedance of two orders of magnitude, with lower bias current. electrical characteristics at specified virtual junction temperature, VI =-10 V, I = 40 mA (unless otherwise noted) PARAMETER V 7 V tto 20 V I 1 mA A to t 40 mA A Io =1mA to 40mA,Vi=-7V to -20V IO = 1 mA to 70 mA Input voltage regulation VI = -7V to -20V VI = -8V to -20V Ripple rejection VI = -8V to -18V f = 120 Hz IO = 1 mA to 100 mA Output voltage regulation Output noise voltage IO = 1 mA to 40 mA f = 10 Hz to 100 kHz Dropout voltage Biascurrent Bias ccurrent rrent Bias current change VI = -8V to -20V IO = 1 mA to 40 mA UNIT MIN TYP MAX -4.8 -4.75 -5 Full range -5.2 -5.25 Full range -4.75 25°C Output voltage 79L05 TJ‡ TEST CONDITIONS 25°C -5.25 15 25°C 25°C 25 C 150 100 41 25°C 25 C V 49 mV mV dB 20 60 10 30 mV mV 25°C 40 µV 25°C 1.7 V 25°C 6 125°C 5.5 Fullll range F Full 1.5 0.1 mA mA mA mA ‡ Pulse-testing techniques maintain TJ as close to TA as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Full range for the 79L05 is TJ = 0°C to 70°C 3-1 Wing Shing Computer Components Co., (H.K.)Ltd. Homepage: http://www.wingshing.com Tel:(852)2341 9276 Fax:(852)2797 8153 E-mail: [email protected] WS 79L05 equivalent schematic COMMON OUTPUT INPUT absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Input voltage: 79L05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30V Operating free-air, case, or virtual junction temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150 °C Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C recommended operating conditions 79L05 Input voltage, VI MIN MAX –7 – 20 V 100 mA 70 °C Output current, IO Operating virtual junction temperature, TJ 0 3-2 UNIT WS 79L05 Pad Location WS79L00 3 2 90µm 1 90µm chip size 1.15 x 1.35mm Pad Location Coordinates Pad N 1 2 3 Pad Name Ground Input Output X(µm) Y(µm) 1150 115 115 115 690 950 3-3 This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components.