UTC UTCLM7924, UTCLM7918, UTCLM7915, UTCLM7912, UTCLM7908 Datasheet
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UTCLM79XX |
LINEAR INTEGRATED CIRCUIT |
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3 TERMINAL 1A NEGATIVE |
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VOLTAGE REGULATOR |
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DESCRIPTION |
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The UTC LM79XX series of three-terminal negative |
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regulators are available in TO-220 package and with several |
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fixed output voltage, making them useful in a wide range of |
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application. Each type employs internal current limiting, |
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thermal shut-down and safe |
area protection, |
making it |
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essentially indestructible. |
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FEATURES |
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*Output current up to 1A |
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*-5V;-6V;-8V;-12V;-15V;-18V;-24V output voltage |
available |
TO-220 |
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*Thermal overload protection |
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*Short circuit protection |
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1:GND 2:Input 3:Output |
BLOCK DIAGRAM
GND
R1
R2 OUTPUT
Voltage reference
Protection
circuitry
RSC |
INPUT |
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UTC UNISONIC TECHNOLOGIES CO., LTD. 1
QW-R101-007,B
UTCLM79XX |
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LINEAR INTEGRATED CIRCUIT |
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ABSOLUTE MAXIMUM RATINGS(Ta=25°C) |
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PARAMETER |
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SYMBOL |
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VALUE |
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UNIT |
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Input voltage |
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Vi |
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-35 |
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V |
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Thermal resistance |
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R θ JA |
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65 |
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°C /W |
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junction-air |
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Thermal resistance |
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R θ JC |
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5 |
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°C /W |
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junction-cases |
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Operating Temperature |
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Topr |
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0 ~ +125 |
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°C |
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Storage Temperature |
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Tstg |
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-65 ~ +150 |
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°C |
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UTC7905 ELECTRICAL CHARACTERISTICS |
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(Refer to test circuits, 0<Tj<125°C,Io=500mA,Vi=-10V,Ci=33uF,Co=1uF, unless otherwise specified) |
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PARAMETER |
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SYMBOL |
TEST CONDITIONS |
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MIN |
TYP |
MAX |
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UNIT |
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Output voltage |
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Vo |
Tj=25°C |
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-4.80 |
-5.0 |
-5.20 |
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V |
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5.0mA<Io<1.0A,Po<15W |
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Vi=-7V to -20V |
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-4.75 |
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-5.25 |
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V |
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Line regulation |
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∆Vo |
Tj=25°C,Vi=-7V to -25V |
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10 |
100 |
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mV |
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Tj=25°C,Vi=-8V to -12V |
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mV |
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Load regulation |
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∆Vo |
Tj=25°C,Io=5.0mA to 1.5A |
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10 |
100 |
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mV |
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Tj=25°C,Io=250mA to 750mA |
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3 |
50 |
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mV |
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Quiescent current |
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IQ |
Tj=25°C |
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3 |
6 |
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mA |
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Quiescent current change |
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∆IQ |
Io=5mA to 1.0A |
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0.05 |
0.5 |
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mA |
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Vi=-7V to -25V |
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0.1 |
1.3 |
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mA |
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Output voltage drift |
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∆Vo/∆T |
Io=5mA |
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-0.4 |
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mV/°C |
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Output noise voltage |
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VN |
f=10hz to 100kHz,Ta=25°C |
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100 |
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µV |
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Ripple rejection |
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RR |
f=120Hz, Vi=-8V to -18V |
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54 |
60 |
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dB |
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Dropout voltage |
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Vo |
Io=1.0A,Tj=25°C |
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2 |
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V |
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Short circuit current |
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Isc |
Vi=-35V,Ta=25°C |
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300 |
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mA |
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peak current |
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Ipk |
Tj=25°C |
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2.2 |
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A |
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UTC7906 ELECTRICAL CHARACTERISTICS |
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(Refer to test circuits, 0<Tj<125°C,Io=500mA,Vi=-11V,Ci=2.2uF,Co=1uF,unless otherwise specified) |
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PARAMETER |
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SYMBOL |
TEST CONDITIONS |
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MIN |
TYP |
MAX |
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UNIT |
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Output voltage |
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Vo |
Tj=25°C |
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-5.76 |
-6.00 |
-6.24 |
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V |
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5.0mA<Io<1.0A,Po<15W |
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Vi=-8V to -21V |
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-5.70 |
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-6.30 |
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V |
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Line regulation |
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∆Vo |
Tj=25°C,Vi=-8V to -25V |
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10 |
120 |
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mV |
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Tj=25°C,Vi=-9V to -13V |
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5 |
60 |
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mV |
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Load regulation |
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∆Vo |
Tj=25°C,Io=5.0mA to 1.5A |
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10 |
120 |
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mV |
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Tj=25°C,Io=250mA to 750mA |
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3 |
60 |
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mV |
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Quiescent current |
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IQ |
Tj=25°C |
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3 |
6 |
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mA |
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Quiescent current change |
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∆IQ |
Io=5mA to 1.0A |
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0.5 |
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mA |
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Vi=-8V to -25V |
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1.3 |
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mA |
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Output voltage drift |
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∆Vo/∆T |
Io=5mA |
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-0.5 |
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mV/°C |
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Output noise voltage |
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VN |
f=10hz to 100kHz,Ta=25°C |
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130 |
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µV |
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Ripple rejection |
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RR |
f=120Hz, Vi=-9V to -19V |
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54 |
60 |
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dB |
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Dropout voltage |
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Vo |
Io=1.0A,Tj=25°C |
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2 |
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V |
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Short circuit current |
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Isc |
Vi=-35V,Ta=25°C |
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300 |
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mA |
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peak current |
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Ipk |
Tj=25°C |
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2.2 |
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A |
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UTC |
UNISONIC TECHNOLOGIES |
CO., LTD. |
2 |
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QW-R101-007,B
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