UNISONIC TECHNOLOGIES CO.,
79LXX LINEAR INTEGRATED CIRCUIT
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Copyright © 2009 Unisonic Technologies Co., QW-R101-003.G
3-TERMINAL 0.1A NEGATIVE
VOLTAGE REGULATOR
DESCRIPTION
The UTC 79LXX family is monolithic fixed voltage regulator
integrated circuit. They are suitable for applications that required
supply current up to 100mA.
FEATURES
* Output Current up to 100mA.
* Fixed Output Voltage of -5V, -6V, -8V, -9V, -12V,-15V ,-18V and
-24V Available.
* Thermal Overload Shutdown Protection.
* Short Circuit Current Limiting.
ORDERING INFORMATION
Ordering Number Pin Assignment
Normal Lead Free Plating Halogen Free 1 2 3 4 5 6 7 8 Package Packing
79Lxx-AB3-R 79LxxL-AB3-R 79LxxG-AB3-R
G I O - - - - - SOT-89 Tape Reel
79Lxx-S08-R 79LxxL-S08-R 79LxxG-S08-R
OI INGI IN SOP-8 Tape Reel
79Lxx-T92-B 79LxxL-T92-B 79LxxG-T92-B
GIO----- TO-92 Tape Box
79Lxx-T92-K 79LxxL-T92-K 79LxxG-T92-K
GIO----- TO-92 Bulk
Note: 1. xx: Output Voltage, refer to Marking Information.
2. Note: Pin Assignment: I:VIN O:VOUT G:GND
79LXX LINEAR INTEGRATED CIRCUIT
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MARKING INFORMATION
PACKAGE VOLTAGE CODE MARKING
SOT-89
TO-92
05:-5.0V
06:-6.0V
08:-8.0V
09:-9.0V
10:-10V
12:-12V
15:-15V
18:-18V
24:-24V
79LXX LINEAR INTEGRATED CIRCUIT
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ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL VALUE UNIT
VOUT = -5~ -9V -30 V
VOUT = -12~ -15V -35 V
Input Voltage
VOUT = -18~ -24V
VIN
-35 V
SOT-89 350 mW
SOP-8 300 mW
Power Dissipation
TO-92
PD
625 mW
Ambient Operating Temperature TOPR -30 ~ +125 °C
Storage Temperature TSTG -40 ~ +125 °C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS
79L05(TJ=25°C, C1=0.33µF, COUT=1µF, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT V
IN=-10V, IOUT=40mA -4.8 -5.0 -5.2 V
Line Regulation OUTIN
OUT
V×ΔV
ΔVVIN=-7~-20V, IOUT =40mA 15 150 mV
Load Regulation OUTOUT
OUT
V×IΔ
ΔVVIN=-10V, IOUT =1~100mA 7 60 mV
Quiescent current IQ V
IN=-10V, IOUT =40mA 3.5 6.0 mA
Ripple Rejection RR VIN=-8~-18V, IOUT =40mA,
ein=1Vp-p ,f=120Hz 41 71 dB
Output Voltage Noise eN VIN=-10V, IOUT =40mA
BW=10Hz~100kH 120 µV
79L06(TJ=25°C, C1=0.33µF, COUT=1µF, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT V
IN=-12V, IOUT =40mA -5.76 -6.0 -6.24 V
Line Regulation OUTIN
OUT
V×ΔV
ΔVVIN=-8.5~-20V, IOUT =40mA 15 150 mV
Load Regulation OUTOUT
OUT
V×IΔ
ΔVVIN=-12V, IOUT =1~100mA 7 60 mV
Quiescent current IQ V
IN=-12V, IOUT =40mA 3.5 6.0 mA
Ripple Rejection RR VIN=-9~ -19V, IOUT =40mA
ein=1Vp-p, f=120Hz 41 71 dB
Output Voltage Noise eN VIN=-12V, IOUT =40mA
BW=10Hz~100kH 120 µV
79L08(TJ=25°C, C1=0.33µF, COUT=1µF, unless otherwise specified)
PARAMETER SYMBOL Test conditions MIN TYP MAX UNIT
Output Voltage VOUT V
IN=-14V, IOUT =40mA -7.68 -8.0 -8.32 V
Line Regulation OUTIN
OUT
V×ΔV
ΔVVIN=-10.5~-23V, IOUT =40mA 24 175 mV
Load Regulation OUTOUT
OUT
V×IΔ
ΔVVIN=-14V, IOUT =1~100mA 10 80 mV
Quiescent current IQ V
IN=-14V, IOUT =40mA 3.5 6.0 mA
Ripple Rejection RR VIN=-11~ -21V, IOUT =40mA
ein=1Vp-p ,f=140Hz 39 68 dB
Output Voltage Noise eN VIN=-14V, IOUT =40mA
BW=10Hz~100kH 190 µV
79LXX LINEAR INTEGRATED CIRCUIT
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ELECTRICAL CHARACTERISTICS(Cont.)
79L09(TJ=25°C, C1=0.33µF, COUT=1µF, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT V
IN=-15V, IOUT =40mA -8.64 -9.0 -9.36 V
Line Regulation OUTIN
OUT
V×ΔV
ΔVVIN=-12.5~-24V, IOUT =40mA 27 200 mV
Load Regulation OUTOUT
OUT
V×IΔ
ΔVVIN=-15V, IOUT =1~100mA 12 90 mV
Quiescent current IQ V
IN=-15V, IOUT =40mA 3.5 6.0 mA
Ripple Rejection RR VIN=-12~ -22V, IOUT =40 mA
ein=1Vp-p ,f=150Hz 37 64 dB
Output Voltage Noise eN VIN=-15V, IOUT =40mA
BW=10Hz~100kH 210 µV
79L12(TJ=25°C, C1=0.33µF, COUT=1µF, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT V
IN=-19V, IOUT =40mA -11.52 -12.0 -12.48 V
Line Regulation OUTIN
OUT
V×ΔV
ΔVVIN=-14.5~-27V, IOUT =40mA 36 250 mV
Load Regulation OUTOUT
OUT
V×IΔ
ΔVVIN=-19V, IOUT =1~100mA 16 100 mV
Quiescent current IQ V
IN=-19V, IOUT =40mA 3.5 6.0 mA
Ripple Rejection RR VIN=-15~ -25V, IOUT =40mA
ein=1Vp-p ,f=190Hz 37 64 dB
Output Voltage Noise eN VIN=-19V, IOUT =40mA
BW=10Hz~100kH 210 µV
79L15(TJ=25°C, C1=0.33µF, COUT=1µF, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT V
IN=-23V, IOUT =40mA -14.4 -15.0 -15.6 V
Line Regulation OUTIN
OUT
V×ΔV
ΔVVIN=-17.5~-30V, IOUT =40mA 45 300 mV
Load Regulation OUTOUT
OUT
V×IΔ
ΔVVIN=-23V, IOUT =1~100mA 20 150 mV
Quiescent current IQ V
IN=-23V, IOUT =40mA 3.5 6.0 mA
Ripple Rejection RR VIN=-18.5~ -28.5V, IOUT =40mA
ein=1Vp-p ,f=230Hz 34 63 dB
Output Voltage Noise eN VIN=-23V, IOUT =40mA
BW=10Hz~100kH 340 µV
79L18(TJ=25°C, C1=0.33µF, COUT=1µF, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT V
IN=-27V, IOUT =40mA -17.28 -18.0 -18.72 V
Line Regulation OUTIN
OUT
V×ΔV
ΔVVIN=-20.5~-33V, IOUT =40mA 54 300 mV
Load Regulation OUTOUT
OUT
V×IΔ
ΔVVIN=-27V, IOUT =1~100mA 23 170 mV
Quiescent current IQ V
IN=-27V, IOUT =40mA 3.5 6.0 mA
Ripple Rejection RR VIN=-23~ -33V, IOUT =40mA
ein=1Vp-p ,f=270Hz 33 60 dB
Output Voltage Noise eN VIN=-27V, IOUT =40mA
BW=10Hz~100kH 410 µV
79LXX LINEAR INTEGRATED CIRCUIT
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ELECTRICAL CHARACTERISTICS(Cont.)
79L24(TJ=25°C, C1=0.33µF, COUT=1µF, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output Voltage VOUT V
IN=-33V, IOUT =40mA -23.04 -24.0 -24.96 V
Line Regulation OUTIN
OUT
V×ΔV
ΔVVIN=-27~-38V,Io=40mA 72 350 mV
Load Regulation OUTOUT
OUT
V×IΔ
ΔVVIN=-33V, IOUT =1~100mA 30 200 mV
Quiescent current IQ V
IN=-33V, IOUT =40mA 3.5 6.0 mA
Ripple Rejection RR VIN=-29~ -35V, IOUT =40mA
ein=1Vp-p ,f=330Hz 31 55 dB
Output Voltage Noise eN VIN=-33V, IOUT =40mA
BW=10Hz~100kH 550 µV
79LXX LINEAR INTEGRATED CIRCUIT
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APPLICATION CIRCUIT
UTC
79LXX
3
1
2
COUT=1µF
C1=0.33 µF
VIN VOUT
TEST CIRCUIT
79LXX LINEAR INTEGRATED CIRCUIT
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TYPICAL CHARACTERISTICS
Power dissipation vs. ambient
temperature
25 50 75 100 125
Ambient temperature(°C)
300
400
500
600
700
Power Dissiapation(mW)
TO-92
SOT-89
Input Voltage vs. Output Voltage
Output Voltage, VOUT(V)
0
-10
-20
-30
-40
UTC79L24
UTC79L15
UTC79L09
UTC79L05
SOP-8
Load Characteristics (TJ=25°C)
0 50 100 150 200 250
Output Current, IOUT(mA)
Output Voltage, VOUT(V)
0
-10
-20
-30
-40
UTC79L24
UTC79L15
UTC79L05
VIN=-33V
VIN=-23V
VIN=-10V
Short Circuit Current (TJ=25°C)
0 -10 -20 -30 -40
Dropout Voltage, VD(V)
Output Current, IOUT(mA)
100
200
300
Output Voltage vs. Junction
temperature
Ambient temperature(°C)
-25 12525 75 175
0
-10
-20
-30
-40
VIN=-33V
VIN=-23V
VIN=-10V
UTC79L24
UTC79L15
UTC79L05
Ambient temperature(°C)
Output Voltage vs. ambient
temperature
-50 0 50 100 150
-4.8
-4.9
-5.0
-5.1
5.2
-7.8
-7.9
-8.0
-8.1
8.2
UTC79L08
UTC79L05
79LXX LINEAR INTEGRATED CIRCUIT
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TYPICAL CHARACTERISTICS(Cont.)
UTC79L05 Dropout Characteristics
(TJ=25°C)
UTC79L08 Dropout Characteristics
(TJ=25°C)
Input Voltage, VIN(V)Input Voltage, VIN(V)
-5.5 -6.0 -6.5
Output Voltage, VOUT(V)
-4.5
-5.0
IOUT=100mA
IOUT=40mA
IOUT=5mA
-8.5 -9.0 -9.5
-7.5
-8.0
IOUT=100mA
IOUT=40mA
IOUT=5mA
Output Voltage, VOUT(V)
0 -10 -20 -30 -40
Input Voltage, VIN(V)
Current vs. Input Voltage
(IOUT=0mA, TJ=25°C)
Quiescent current, IQ(mA)
0
1
2
3
4
5
UTC79L24
UTC79L05
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
