79L08 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 Provided Pb-Free packages from the end of 2004 C OUTPUT INPUT COMMON I O TO–92 79L08ACZ description This series of fixed negative-voltage integrated-circuit SOT-89 voltage regulators is designed for a wide range of 79L08CPK COMMON INPUT OUTPUT 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 iimpedance of two orders of magnitude, with lower bias current. electrical characteristics at specified virtual junction temperature, VI = -14V, Io = 40mA (unless otherwise noted) TEST CONDITIONS PARAMETER 79L06 TJ‡ MIN Output voltage Input voltage regulation V 7 V tto 20 V I 25°C -7.7 Full range -7.6 1 mA A tto 40 mA A I o=1 to 40mA, V = -10.5V to -23V Io=1mA to 70mA VI = -10.5V to -23V 25°C 25°C 25 C TYP -8 UNIT MAX -8.3 V -8.4 42 200 36 150 mV mV Ripple rejection VI = -11V to -23V VI = -11V to -23V f = 120 Hz Output voltage regulation IO = 1 mA to 40mA IO = 1 mA to 100mA 25°C 25 C Output noise voltage f = 10 Hz to 100 kHz 25°C 54 µV 25°C 1.7 V 25°C 3 Dropout voltage Biascurrent Bias ccurrent rrent Bias current change 25°C 37 125°C VI = -11V to -23V IO = 1 mA to 40 mA Fullll range F Full 46 15 30 dB 50 100 6 5.5 1.5 0.1 mV mV 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 79L08 is T J = 0°C to 70°C 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] 3-1 WS 79L08 equivalent schematic COMMON OUTPUT INPUT absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Input voltage: 79L0 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -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 79L0 8 Input voltage, VI MIN MAX -10.5 -23 V 100 mA 70 °C Output current, IO Operating virtual junction temperature, TJ 0 3-2 UNIT WS 79L08 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