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M68719 YSCM66 P177032C 63D23 LBN14014 74286 0N60C A24C1
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 79L05
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 MC79L00 Series
Negative-Voltage Regulators
OUTPUT INPUT COMMON
C I
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 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=-7V to -20V IO = 1 mA to 70 mA VI = -7V to -20V VI = -8V to -20V VI = -8V to -18V f = 120 Hz 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 = -8V to -20V IO = 1 mA to 40 mA F ll Full Full range 41
79L05
TYP MAX
UNIT
-4.8 -4.75 -4.75
-5
-5.2 -5.25 -5.25
150 100
V
Input voltage regulation Ripple rejection Output voltage regulation Output noise voltage Dropout voltage
15
49
mV mV dB
20 10 40
1.7
60 30
mV V V
mV
Biasccurrent Bias current rrent
Bias current change
6 5.5 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 7 9L05 is T = 0C to 70C J
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: wsccltd@hkstar.com
WS 79L05
equivalent schematic
COMMON
OUTPUT
INPUT
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Input voltage: 79L05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30V
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
79L05 Input voltage, VI Output current, IO Operating virtual junction temperature, TJ 0 MIN -7 MAX - 20 UNIT V mA C
100
70
3-2
WS 79L05
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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