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UTCLM7912
Datasheet
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UTC UTCLM7924, UTCLM7918, UTCLM7915, UTCLM7912, UTCLM7908 Datasheet

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UTC LM79XX LINEAR INTEGRATED CIRCUIT
3 TERMINAL 1A NEGATIVE VOLTAGE REGULATOR
DESCRIPTION
regulators are available in TO-220 package and with several fixed output voltage, making them useful in a wide range of application. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible.
FEATURES
*Output current up to 1A *-5V;-6V;-8V;-12V;-15V;-18V;-24V output voltage available *Thermal overload protection *Short circuit protection
BLOCK DIAGRAM
GND
1
TO-220
1:GND 2:Input 3:Output
R1
OUTPUT
R2
Voltage
reference
Protection
circuitry
RSC
INPUT
UTC UNISONIC TECHNOLOGIES CO., LTD. 1
QW-R101-007,B
UTC LM79XX LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS(Ta=25°C)
PARAMETER SYMBOL VALUE UNIT
Input voltage Vi -35 V
JA
Thermal resistance junction-air Thermal resistance junction-cases Operating Temperature Topr 0 ~ +125 Storage Temperature Tstg -65 ~ +150
R θ
R θ
JC
65
5
UTC7905 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125°C,Io=500mA,Vi=-10V,Ci=33uF,Co=1uF, unless otherwise specified)
Output voltage Vo 5.0mA<Io<1.0A,Po<15W
Line regulation
Load regulation
Quiescent current IQ Quiescent current change Vi=-7V to -25V 0.1 1.3 mA Output voltage drift Output noise voltage VN Ripple rejection RR f=120Hz, Vi=-8V to -18V 54 60 dB Dropout voltage Vo Short circuit current Isc peak current Ipk
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Tj=25°C
Vi=-7V to -20V
∆Vo Tj=25°C,Vi=-7V to -25V
Tj=25°C,Vi=-8V to -12V
∆Vo Tj=25°C,Io=5.0mA to 1.5A
Tj=25°C,Io=250mA to 750mA Tj=25°C Io=5mA to 1.0A 0.05 0.5 mA
Q
∆I
∆Vo/∆T
Io=5mA -0.4 f=10hz to 100kHz,Ta=25°C
Io=1.0A,Tj=25°C Vi=-35V,Ta=25°C Tj=25°C
-4.80 -5.0 -5.20 V
-4.75 -5.25 V 10 100 mV mV 10 100 mV 3 50 mV 3 6 mA
100
2 V 300 mA
2.2 A
UTC7906 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125°C,Io=500mA,Vi=-11V,Ci=2.2uF,Co=1uF,unless otherwise specified)
Output voltage Vo 5.0mA<Io<1.0A,Po<15W
Line regulation
Load regulation
Quiescent current IQ Quiescent current change Vi=-8V to -25V 1.3 mA Output voltage drift Output noise voltage VN Ripple rejection RR f=120Hz, Vi=-9V to -19V 54 60 dB Dropout voltage Vo Short circuit current Isc peak current Ipk
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Tj=25°C
Vi=-8V to -21V
∆Vo Tj=25°C,Vi=-8V to -25V
Tj=25°C,Vi=-9V to -13V
∆Vo Tj=25°C,Io=5.0mA to 1.5A
Tj=25°C,Io=250mA to 750mA Tj=25°C Io=5mA to 1.0A 0.5 mA
Q
∆I
∆Vo/∆T
Io=5mA -0.5 f=10hz to 100kHz,Ta=25°C
Io=1.0A,Tj=25°C Vi=-35V,Ta=25°C Tj=25°C
-5.76 -6.00 -6.24 V
-5.70 -6.30 V 10 120 mV 5 60 mV 10 120 mV 3 60 mV 3 6 mA
130
2 V 300 mA
2.2 A
°C /W
°C /W
°C °C
mV/°C
µV
mV/°C
µV
UTC UNISONIC TECHNOLOGIES CO., LTD. 2
QW-R101-007,B
UTC LM79XX LINEAR INTEGRATED CIRCUIT
UTC7908 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125°C,Io=500mA,Vi=-14V,Ci=2.2uF,Co=1uF,unless otherwise specified)
Output voltage Vo 5.0mA<Io<1.0A,Po<15W
Line regulation
Load regulation
Quiescent current IQ Quiescent current change Vi=-11.5V to -25V 0.1 1.0 mA Output voltage drift Output noise voltage VN Ripple rejection RR f=120Hz, Vi=-11.5V to -21.5V 54 60 dB Dropout voltage Vo Short citcuit current Isc peak current Ipk
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Tj=25°C
Vi=-10.5V to -23V
∆Vo Tj=25°C,Vi=-10.5V to -25V
Tj=25°C,Vi=-11.5V to -17V
∆Vo Tj=25°C,Io=5.0mA to 1.5A
∆Vo/∆T
Tj=25°C,Io=250mA to 750mA Tj=25°C Io=5mA to 1.0A 0.05 0.5 mA
Q
∆I
Io=5mA -0.6 f=10hz to 100kHz,Ta=25°C
Io=1.0A,Tj=25°C Vi=-35V,Ta=25°C Tj=25°C
UTC7912 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125°C,Io=500mA,Vi=-18V,Ci=2.2uF,Co=1uF,unless otherwise specified)
Output voltage Vo 5.0mA<Io<1.0A,Po<15W
Line regulation
Load regulation
Quiescent current IQ Quiescent current change Vi=-14.5V to -30V 0.1 1.0 mA Output voltage drift Output noise voltage VN Ripple rejection RR f=120Hz, Vi=-15V to -25V 54 60 dB Dropout voltage Vo Short circuit current Isc peak current Ipk
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Tj=25°C
Vi=-14.5V to -27V
∆Vo Tj=25°C,Vi=-14.5V to -30V
Tj=25°C,Vi=-16V to -22V
∆Vo Tj=25°C,Io=5.0mA to 1.5A
Tj=25°C,Io=250mA to 750mA Tj=25°C Io=5mA to 1.0A 0.05 0.5 mA
Q
∆I
∆Vo/∆T
Io=5mA -0.8 f=10hz to 100kHz,Ta=25°C
Io=1.0A,Tj=25°C Vi=-35V,Ta=25°C Tj=25°C
-7.68 -8.0 -8.32 V
-7.60 -8.40 V 10 100 mV 5 80 mV 12 160 mV 4 80 mV 3 6 mA
175
2 V 300 mA
2.2 A
-11.52 -12.0 -12.48 V
-11.40 -12.60 V 12 240 mV 6 120 mV 12 240 mV 4 120 mV 3 6 mA
200
2 V 300 mA
2.2 A
mV/°C
µV
mV/°C
µV
UTC UNISONIC TECHNOLOGIES CO., LTD. 3
QW-R101-007,B
UTC LM79XX LINEAR INTEGRATED CIRCUIT
UTC7915 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125°C, Io=500mA,Vi=-23V,Ci=2.2uF,Co=1uF,unless otherwise specified)
Output voltage Vo 5.0mA<Io<1.0A,Po<15W
Line regulation
Load regulation
Quiescent current IQ Quiescent current change Vi=-17.5V to -30.5V 0.1 1.0 mA Output voltage drift Output noise voltage VN Ripple rejection RR f=120Hz, Vi=-18.5V to -28.5V 54 60 dB Dropout voltage Vo Short circuit current Isc peak current Ipk
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Tj=25°C
Vi=-17.5V to -30V
∆Vo Tj=25°C,Vi=-17.5V to -30V
Tj=25°C,Vi=-20V to -26V
∆Vo Tj=25°C,Io=5.0mA to 1.5A
Tj=25°C,Io=250mA to 750mA Tj=25°C Io=5mA to 1.0A 0.05 0.5 mA
Q
∆I
∆Vo/∆T
Io=5mA -0.9 f=10hz to 100kHz,Ta=25°C
Io=1.0A,Tj=25°C Vi=-35V,Ta=25°C Tj=25°C
UTC7918 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125°C,Io=500mA,Vi=-27V,Ci=2.2uF,Co=1uF,unless otherwise specified)
Output voltage Vo 5.0mA<Io<1.0A,Po<15W
Line regulation
Load regulation
Quiescent current IQ Quiescent current change Vi=-21V to -32V 1.0 mA Output voltage drift Output noise voltage VN Ripple rejection RR f=120Hz, Vi=-22V to -32V 54 60 dB Dropout voltage Vo Short circuit current Isc peak current Ipk
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Tj=25°C
Vi=-21V to -33V
∆Vo Tj=25°C,Vi=-21V to -33V
Tj=25°C,Vi=-24V to -30V
∆Vo Tj=25°C,Io=5.0mA to 1.5A
Tj=25°C,Io=250mA to 750mA Tj=25°C Io=5mA to 1.0A 0.5 mA
Q
∆I
∆Vo/∆T
Io=5mA -1 f=10hz to 100kHz,Ta=25°C
Io=1.0A,Tj=25°C Vi=-35V,Ta=25°C Tj=25°C
-14.40 -15.0 -15.60 V
-14.25 -15.75 V 12 300 mV 6 150 mV 12 300 mV 4 150 mV 3 6 mA
250
2 V 300 mA
2.2 A
-17.28 -18.0 -18.72 V
-17.10 -18.90 V 15 360 mV 8 180 mV 15 360 mV
5.0 180 mV 3 6 mA
300
2 V 300 mA
2.2 A
mV/°C
µV
mV/°C
µV
UTC UNISONIC TECHNOLOGIES CO., LTD. 4
QW-R101-007,B
UTC LM79XX LINEAR INTEGRATED CIRCUIT
UTC7924 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125°C,Io=500mA,Vi=-33V,Ci=2.2uF,Co=1uF,unless otherwise specified)
Output voltage Vo 5.0mA<Io<1.0A,Po<15W
Line regulation
Load regulation
Quiescent current IQ Quiescent current change Vi=-27V to -38V 1.0 mA Output voltage drift Output noise voltage VN Ripple rejection RR f=120Hz, Vi=-28V to -38V 54 60 dB Dropout voltage Vo Short circuit current Isc peak current Ipk
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
∆Vo/∆T
Tj=25°C
Vi=-27V to -38V
∆Vo Tj=25°C,Vi=-27V to -38V
Tj=25°C,Vi=-30V to -36V
∆Vo Tj=25°C,Io=5.0mA to 1.5A
Tj=25°C,Io=250mA to 750mA Tj=25°C Io=5mA to 1.0A 0.5 mA
Q
∆I
Io=5mA -1 f=10hz to 100kHz,Ta=25°C
Io=1.0A,Tj=25°C Vi=-35V,Ta=25°C Tj=25°C
APPLICATION CIRCUITS
-23.04 -24 -24.96 V
-22.80 -25.20 V 15 480 mV 8 240 mV 15 480 mV
5.0 240 mV 3 6 mA
400
2 V 300 mA
2.2 A
mV/°C
µV
C1
2.2
µ
F
1
-Vi -Vo 23
UTC LM79XX
Fig.1 Fixed output regulator
+20V
UTC LM7815
1
2
2.2 µF
23
1
UTC LM7915
3
0.1
µ
F0.33 µF
1
µ
F
Fig.2 Split power supply(+-15V,1A)
C0
1 µF
+15V
1N4001
1N4001
-15V-20V
UTC UNISONIC TECHNOLOGIES CO., LTD. 5
QW-R101-007,B
UTC LM79XX LINEAR INTEGRATED CIRCUIT
2.2
C1
C3
2.5
µ
F
µ
F
23
1
UTC LM79XX
R1
R2
C2
µ
F
1
-Vo-Vi
Fig.3 Circuit for increasing output voltage
UTC UNISONIC TECHNOLOGIES CO., LTD. 6
QW-R101-007,B
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