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| 79L15 D D D D D D 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 MC79L15 Series Negative-Voltage Regulators OUTPUT INPUT COMMON C IO TO-92 79L15ACZ description This series of fixed negative-voltage integrated-circuit SOT-89 voltage regulators is designed for a wide range of 79L15CPK 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 impedance of two orders of magnitude, with lower bias current. electrical characteristics at specified virtual junction temperature, VI = -23V, I O=40mA otherwise noted) PARAMETER TEST CONDITIONS TJ MIN 25C Output voltage V 7 V t 20 V to I 1 mA to 40 mA At A Io =1mA to 40mA,VI =-17.5V to -30V IO =1mA to 70mA VI = -17.5V to -30V VI = -20V to -30V VI = -18.5V to -28.5V, f = 120Hz IO = 1 mA to 100 mA IO = 1 mA to 40 mA f = 10 Hz to 100 kHz Full range Full range 25C 25C 25 C 25C 25C 25 C 25C 25C 25C 125C VI = -20V to -30V IO = 1 mA to 40 mA F ll Full Full range 79L15 TYP MAX UNIT -14.4 -11.25 -11.25 -15 -15.6 -15.75 -15.75 V Input voltage regulation Ripple rejection Output voltage regulation Output noise voltage Dropout voltage 65 50 300 250 mV mV dB 34 39 25 150 75 mV V V 15 90 1.7 mV Biasccurrent Bias current rrent Bias current change 6.5 6 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-F capacitor across the input and a 0.1-F capacitor across the output. Full range for the 79L15 is T J = 0C to 70C Wing Shing Computer Components Co., (H.K.)Ltd. Homepage: http://www.wingshing.com Tel:(852)2341 9276 Fax:(852)2797 8153 E-mail: ic@wingshing.com 3-1 WS 79L15 equivalent schematic COMMON OUTPUT INPUT absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Input voltage: 79L15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35V 150 C Operating free-air, case, or virtual junction temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C recommended operating conditions 79L15 Input voltage, VI Output current, IO Operating virtual junction temperature, TJ 0 MIN MAX UNIT V mA C -17.5 -30 100 70 3-2 WS 79L15 Pad Location WS79L00 3 2 90m 1 90m chip size 1.15 x 1.35mm Pad Location Coordinates Pad N 1 2 3 Pad Name Ground Input Output X(m) 1150 115 115 Y(m) 115 690 950 3-3 |
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