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SG120
NEGATIVE FIXED VOLTAGE REGULATOR
DESCRIPTION
The SG120 series of negative regulators offer self-contained, fixed-voltage capability with up to 1.5A of load current. With a variety of output voltages and four package options this regulator series is an optimum complement to the SG7800A/ 7800/120 line of three terminal regulators. All protective features of thermal shutdown, current limiting, and safe-area control have been designed into these units and since these regulators require only a single output capacitor or a capacitor and 5mA minimum load for satisfactory performance, ease of application is assured. Although designed as fixed-voltage regulators, the output voltage can be increased through the use of a simple voltage divider. The low quiescent drain current of the device insures good regulation when this method is used, especially for the SG120 series. Utilizing an improved Bandgap reference design, problems have been eliminated that are normally associated with the zener diode references, such as drift in output voltage and large changes in the line and load regulation These devices are available in TO-257 (hermetically sealed TO-220), both isolated and non-isolated), TO-3, TO-39 and TO-66 power packages.
FEATURES
* * * * * * Output current to 1.5A Excellent line and load regulation Foldback current limiting Thermal overload protection Voltages available: -5V, -12V, -15V Voltages Not Recommended For New Designs: -5.2V, -8V, -18V, -20V * Contact factory for other voltage options
HIGH RELIABILITY FEATURES - SG120
Available to MIL-STD - 883 Radiation data available LMI level "S" processing available
SCHEMATIC DIAGRAM
11/91 Rev 1.4 6/97
Copyright 1997
1
11861
Western
LINFINITY
Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
Microelectronics
Inc.
SG120
ABSOLUTE MAXIMUM RATINGS (Note 1)
Device Output Voltage -5V -5.2V -8V -12V -15V -18V -20V Input Voltage -35V -35V -35V -35V -40V -40V -40V
NEGATIVE REGULATOR
Input Voltage Differential (Output shorted to ground) 35V 35V 35V 35V 35V 35V 35V
Operating Junction Temperature Hermetic (K, R, IG - Packages) ................................... 150C
Note 1. Values beyond which damage may occur.
Storage Temperature Range ........................... -65C to 150C Lead Temperature (Soldering, 10 Seconds) ................. 300C
THERMAL DATA
K Package: Thermal Resistance-Junction to Case, JC ................. 3.0C/W Thermal Resistance-Junction to Ambient, JA ............... 35C/W R Package: Thermal Resistance-Junction to Case, JC ................. 5.0C/W Thermal Resistance-Junction to Ambient, JA .............. 40C/W T Package: Thermal Resistance-Junction to Case, JC .................. 15C/W Thermal Resistance-Junction to Ambient, JA ............ 120C/W IG Package: Thermal Resistance-Junction to Case, JC ................. 3.5C/W Thermal Resistance-Junction to Ambient, JA .............. 42C/W L Package: Thermal Resistance-Junction to Case, JC .................. 35C/W Thermal Resistance-Junction to Ambient, JA ............ 120C/W
Note A. Junction Temperature Calculation: TJ = TA + (PD x JA). Note B. The above numbers for JC are maximums for the limiting thermal resistance of the package in a standard mounting configuration. The JA numbers are meant to be guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow.
RECOMMENDED OPERATING CONDITIONS
(Note 2)
Operating Junction Temperature Range: SG120 ........................................................... -55C to 150C
Note 2. Range over which the device is functional.
CHARACTERISTIC CURVES
FIGURE 1. MAXIMUM AVERAGE POWER DISSIPATION
FIGURE 2. QUIESCENT CURRENT VS. LOAD
FIGURE 3. TEMPERATURE COEFFICIENT
11/91 Rev 1.4 6/97
Copyright 1997
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Western
LINFINITY
Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
Microelectronics
Inc.
SG120
CHARACTERISTIC CURVES
(continued)
NEGATIVE REGULATOR
FIGURE 4. SHORTCIRCUIT CURRENT VS. VIN
FIGURE 5. QUIESCENT CURRENT VS. VIN
FIGURE 6. SHORT CIRCUIT CURRENT VS. VIN
FIGURE 7. DROPOUT CHARACTERISTICS
FIGURE 8. RIPPLE REJECTION VS. FREQUENCY
APPLICATIONS
FIGURE 9 - FIXED OUTPUT REGULATOR
FIGURE 10 - CIRCUIT FOR INCREASING OUTPUT VOLTAGE
NOTE: 1. C1 is required only if regulator is separated from rectifier filter. 2. Both C1 and C2 should be low E.S.R. types such as solid tantalum. If aluminum electrolitics are used, at least 10 times values shown should be selected. 3. If large output capacities are used, the regulators must be protected from momentary input shorts. A high current diode from output to input will suffice.
NOTE: C3 optional for improved transient response and ripple rejection. R + R2 V(REG) R2 = VOUT = V (REGULATOR) 1 R1 15mA
11/91 Rev 1.4 6/97
Copyright 1997
3
11861
Western
LINFINITY
Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
Microelectronics
Inc.
SG120
ELECTRICAL CHARACTERISTICS
SG120-05
(Note 1)
-5.0V & -5.2V NEGATIVE REGULATOR
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-05 with -55C TA 150C, and VIN = -10V, IO = 5mA, CIN = 2mF, COUT = 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal to the ambient temperature.)
Parameter Output Voltage Line Regulation (Note 1) Load Regulation (Note 1) Total Output Voltage Tolerance Quiescent Current Quiescent Current Change
Test Conditions TJ = 25C VIN = -7V to -25V, TJ = 25C Power Pkgs: IO = 5mA to 1.5A, TJ = 25C T - Pkg: IO = 5mA to 500mA, TJ = 25C VIN = -7.5V to -25V Power Pkgs: IO = 5mA to 1.5A, P 20W T - Pkg: IO = 5mA to 500mA, P 2W VIN = -7V to -25V With Line: VIN = -7V to -25V, TJ = 25C With Load: TJ = 25C Power Pkgs: IO = 5mA to 1.5A T - Pkg: IO = 5mA to 500mA VO = 100mV, TJ = 25C Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA Power Pkgs: TJ = 25C T - Pkg: TJ = 25C Power Pkgs: VIN = -35V, TJ = 25C T - Pkg: VIN = -35V, TJ = 25C VIN = 10V, f = 120Hz, TJ = 25C f = 10Hz to 100KHz (Note 2) 1000hrs. at TJ = 125C IO = 5mA
SG120-05 Min. Typ. Max. -4.9 -5.0 -5.1 10 25 50 75 30 50 -4.8 -4.8 -5.0 -5.0 -5.2 -5.2 2 0.4 0.4 0.4 1.1 1.5 0.5 2.3 3.3 1.4 1.2 0.6 80
Units V mV mV mV V V mA mA mA mA V A A A A dB V/V mV C
Dropout Voltage Peak Output Current Short Circuit Current Ripple Rejection Output Noise Voltage (rms) Long Term Stability Thermal Shutdown SG120-5.2
54 25 20 175
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-5.2 with -55C TA 150C, and VIN = -10V, IO = 5mA, CIN = 2mF, COUT = 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal to the ambient temperature.)
Parameter Output Voltage Line Regulation (Note 1) Load Regulation (Note 1) Total Output Voltage Tolerance Quiescent Current Quiescent Current Change
Test Conditions TJ = 25C VIN = -7.2V to -25V, TJ = 25C Power Pkgs: IO = 5mA to 1.5A, TJ = 25C T - Pkg: IO = 5mA to 500mA, TJ = 25C VIN = -7.7V to -25V Power Pkgs: IO = 5mA to 1.5A, P 20W T - Pkg: IO = 5mA to 500mA, P 2W VIN = -7.2V to -25V With Line: VIN = -7.2V to -25V, TJ = 25C With Load: TJ = 25C Power Pkgs: IO = 5mA to 1.5A T - Pkg: IO = 5mA to 500mA VO = 100mV, TJ = 25C Power Pkgs: IO = 1.5A, T - Pkg: IO = 500mA Power Pkgs: TJ = 25C T - Pkg: TJ = 25C Power Pkgs: VIN = -35V, TJ = 25C T - Pkg: VIN = -35V, TJ = 25C VIN = 10V, f = 120Hz, TJ = 25C f = 10Hz to 100KHz (Note 2) 1000hrs. at TJ = 125C IO = 5mA
SG120-5.2 Min. Typ. Max. -5.1 -5.2 -5.3 15 25 50 75 30 50 -5.0 -5.0 -5.2 -5.2 -5.4 -5.4 2 0.4 0.4 0.4 1.1 1.5 0.5 2.3 3.3 1.4 1.2 0.6 80
Units V mV mV mV V V mA mA mA mA V A A A A dB V/V mV C
Dropout Voltage Peak Output Current Short Circuit Current Ripple Rejection Output Noise Voltage (rms) Long Term Stability Thermal Shutdown
54 25 20 175
Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing. 2. This test is guaranteed but is not tested in production.
11/91 Rev 1.4 6/97
Copyright 1997
4
11861
Western
LINFINITY
Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
Microelectronics
Inc.
SG120
ELECTRICAL CHARACTERISTICS
SG120-08
(Note 1)
-8V & -12V NEGATIVE REGULATOR
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-08 with -55C TA 150C, and VIN = -14V, IO = 5mA, CIN = 1.0mF, COUT = 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal to the ambient temperature.)
Parameter Output Voltage Line Regulation (Note 1) Load Regulation (Note 1) Total Output Voltage Tolerance Quiescent Current Quiescent Current Change
Test Conditions TJ = 25C VIN = -10.5V to -25V, TJ = 25C Power Pkgs: IO = 5mA to 1.5A, TJ = 25C T - Pkg: IO = 5mA to 500mA, TJ = 25C VIN = -10.5V to -25V Power Pkgs: IO = 5mA to 1.5A, P 20W T - Pkg: IO = 5mA to 500mA, P 2W VIN = -10.5V to -25V With Line: VIN = -10.5V to -25V, TJ = 25C With Load: TJ = 25C Power Pkgs: IO = 5mA to 1.5A T - Pkg: IO = 5mA to 500mA VO = 100mV, TJ = 25C Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA Power Pkgs: TJ = 25C T - Pkg: TJ = 25C Power Pkgs: VIN = -35V, TJ = 25C T - Pkg: VIN = -35V, TJ = 25C VIN = 10V, f = 120Hz, TJ = 25C f = 10Hz to 100KHz (Note 2) 1000hrs. at TJ = 125C IO = 5mA
SG120-8 Min. Typ. Max. -7.8 -8.0 -8.2 10 25 20 80 10 25 -7.65 -8.00 -8.35 -7.65 -8.00 -8.35 2 0.4 0.4 0.4 1.1 1.5 0.5 2.3 3.3 1.4 1.2 0.6 80
Units V mV mV mV V V mA mA mA mA V A A A A dB V/V mV C
Dropout Voltage Peak Output Current Short Circuit Current Ripple Rejection Output Noise Voltage (rms) Long Term Stability Thermal Shutdown SG120-12
54 25 32 175
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-12 with -55C TA 150C, and VIN = -17V, IO = 5mA, CIN = 2.0mF, COUT = 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal to the ambient temperature.)
Parameter Output Voltage Line Regulation (Note 1) Load Regulation (Note 1) Total Output Voltage Tolerance Quiescent Current Quiescent Current Change
Test Conditions TJ = 25C VIN = -14V to -32V, TJ = 25C Power Pkgs: IO = 5mA to 1.0A, TJ = 25C T - Pkg: IO = 5mA to 500mA, TJ = 25C VIN = -14.5V to -32V Power Pkgs: IO = 5mA to 1.0A, P 20W T - Pkg: IO = 5mA to 500mA, P 2W VIN = -14V to -32V With Line: VIN = -14V to -32V, TJ = 25C With Load: TJ = 25C Power Pkgs: IO = 5mA to 1.0A T - Pkg: IO = 5mA to 500mA VO = 100mV, TJ = 25C Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA Power Pkgs: TJ = 25C T - Pkg: TJ = 25C Power Pkgs: VIN = -35V, TJ = 25C T - Pkg: VIN = -35V, TJ = 25C VIN = 10V, f = 120Hz, TJ = 25C f = 10Hz to 100KHz (Note 2) 1000hrs. at TJ = 125C IO = 5mA
SG120-12 Min. Typ. Max. -11.7 -12.0 -12.3 4 10 30 80 10 25 -11.5 -12.0 -12.5 -11.5 -12.0 -12.5 2 4 0.4 0.4 0.4 1.1 1.5 0.5 2.3 3.3 1.4 1.2 0.6 80
Units V mV mV mV V V mA mA mA mA V A A A A dB V/V mV C
Dropout Voltage Peak Output Current Short Circuit Current Ripple Rejection Output Noise Voltage (rms) Long Term Stability Thermal Shutdown
56 25 48 175
Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing. 2. This test is guaranteed but is not tested in production. 11/91 Rev 1.4 6/97
Copyright 1997
5
11861
Western
LINFINITY
Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
Microelectronics
Inc.
SG120
ELECTRICAL CHARTACTERISTICS
SG120-15
(Note 1)
-15V & -18V NEGATIVE REGULATOR
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-15 with -55C TA 150C, and VIN = -20V, IO = 5mA, CIN = 2.0mF, COUT = 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal to the ambient temperature.)
Parameter Output Voltage Line Regulation (Note 1) Load Regulation (Note 1) Total Output Voltage Tolerance Quiescent Current Quiescent Current Change
Test Conditions TJ = 25C VIN = -17V to -35V, TJ = 25C Power Pkgs: IO = 5mA to 1.0A, TJ = 25C T - Pkg: IO = 5mA to 500mA, TJ = 25C VIN = -17.5V to -35V Power Pkgs: IO = 5mA to 1.0A, P 20W T - Pkg: IO = 5mA to 500mA, P 2W VIN = -17V to -35V With Line: VIN = -17V to -35V, TJ = 25C With Load: TJ = 25C Power Pkgs: IO = 5mA to 1.0A T - Pkg: IO = 5mA to 500mA VO = 100mV, TJ = 25C Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA Power Pkgs: TJ = 25C T - Pkg: TJ = 25C Power Pkgs: VIN = -35V, TJ = 25C T - Pkg: VIN = -35V, TJ = 25C VIN = 10V, f = 120Hz, TJ = 25C f = 10Hz to 100KHz (Note 2) 1000hrs. at TJ = 125C IO = 5mA
SG120-15 Min. Typ. Max. -14.7 -15.0 -15.3 5 10 30 80 10 25 -14.5 -15.0 -15.5 -14.5 -15.0 -15.5 2 4 0.4 0.4 0.4 1.1 1.5 0.5 2.3 3.3 1.4 1.2 0.6 80
Units V mV mV mV V V mA mA mA mA V A A A A dB V/V mV C
Dropout Voltage Peak Output Current Short Circuit Current Ripple Rejection Output Noise Voltage (rms) Long Term Stability Thermal Shutdown SG120-18
56 25 60 175
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-18 with -55C TA 150C, and VIN = -27V, IO = 5mA, CIN = 2.0mF, COUT = 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal to the ambient temperature.)
Parameter Output Voltage Line Regulation (Note 1) Load Regulation (Note 1) Total Output Voltage Tolerance Quiescent Current Quiescent Current Change
Test Conditions TJ = 25C VIN = -21V to -33V, TJ = 25C Power Pkgs: IO = 5mA to 1.0A, TJ = 25C T - Pkg: IO = 5mA to 500mA, TJ = 25C VIN = -22V to -33V Power Pkgs: IO = 5mA to 1.0A, P 20W T - Pkg: IO = 5mA to 500mA, P 2W VIN = -21V to -33V With Line: VIN = -21V to -33V, TJ = 25C With Load: TJ = 25C Power Pkgs: IO = 5mA to 1.0A T - Pkg: IO = 5mA to 500mA VO = 100mV, TJ = 25C Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA Power Pkgs: TJ = 25C T - Pkg: TJ = 25C Power Pkgs: VIN = -35V, TJ = 25C T - Pkg: VIN = -35V, TJ = 25C VIN = 10V, f = 120Hz, TJ = 25C f = 10Hz to 100KHz (Note 2) 1000hrs. at TJ = 125C IO = 5mA
SG120-18 Min. Typ. Max. -17.6 -18.0 -18.4 5 10 30 80 10 25 -17.4 -18.0 -18.6 -17.4 -18.0 -18.6 2 4 0.4 0.4 0.4 1.1 1.5 0.5 2.3 3.3 1.4 1.2 0.6
Units V mV mV mV V V mA mA mA mA V A A A A dB V/V mV C
Dropout Voltage Peak Output Current Short Circuit Current Ripple Rejection Output Noise Voltage (rms) Long Term Stability Thermal Shutdown
56 25 72 175
Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing. 2. This test is guaranteed but is not tested in production. 11/91 Rev 1.4 6/97
Copyright 1997
6
11861
Western
LINFINITY
Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
Microelectronics
Inc.
SG120
ELECTRICAL CHATRACTERISTICS
SG120-20
(Note 1)
-20V NEGATIVE REGULATOR
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG120-20 with -55C TA 150C, and VIN = -29V, IO = 5mA, CIN = 2.0mF, COUT = 1.0mF. Low duty cycle pulse testing techniques are used which maintains junction and case temperature equal to the ambient temperature.)
Parameter Output Voltage Line Regulation (Note 1) Load Regulation (Note 1) Total Output Voltage Tolerance Quiescent Current Quiescent Current Change
Test Conditions TJ = 25C VIN = -23V to -35V, TJ = 25C Power Pkgs: IO = 5mA to 1.0A, TJ = 25C T - Pkg: IO = 5mA to 500mA, TJ = 25C VIN = -24V to -35V Power Pkgs: IO = 5mA to 1.0A, P 20W T - Pkg: IO = 5mA to 500mA, P 2W VIN = -23V to -35V With Line: VIN = -23V to -35V, TJ = 25C With Load: TJ = 25C Power Pkgs: IO = 5mA to 1.0A T - Pkg: IO = 5mA to 500mA VO = 100mV, TJ = 25C Power Pkgs: IO = 1.0A, T - Pkg: IO = 500mA Power Pkgs: TJ = 25C T - Pkg: TJ = 25C Power Pkgs: VIN = -35V, TJ = 25C T - Pkg: VIN = -35V, TJ = 25C VIN = 10V, f = 120Hz, TJ = 25C f = 10Hz to 100KHz (Note 2) 1000hrs. at TJ = 125C IO = 5mA
SG120-20 Units Min. Typ. Max. -19.5 -20.0 -20.5 V 5 10 mV 30 80 mV 10 25 mV -19.3 -20.0 -20.7 -19.3 -20.0 -20.7 2 4 0.4 0.4 0.4 1.1 1.5 0.5 2.3 3.3 1.4 1.2 0.6 80 V V mA mA mA mA V A A A A dB V/V mV C
Dropout Voltage Peak Output Current Short Circuit Current Ripple Rejection Output Noise Voltage (rms) Long Term Stability Thermal Shutdown
56 25 80 175
Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing. 2. This test is guaranteed but is not tested in production.
11/91 Rev 1.4 6/97
Copyright 1997
7
11861
Western
LINFINITY
Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
Microelectronics
Inc.
SG120
CONNECTION DIAGRAMS & ORDERING INFORMATION
Package
3-TERMINAL TO-3 METAL CAN K-PACKAGE
NEGATIVE REGULATOR
(See Notes Below)
Part No. SG120-XXK/883B SG120-XXK
Ambient Temperature Range -55C to 125C -55C to 125C
Connection Diagram
GROUND
1
2 CASE IS VIN VOUT
3-TERMINAL TO-66 METAL CAN R-PACKAGE
SG120-XXR/883B SG120-XXR
-55C to 125C -55C to 125C
GROUND
1 2 CASE IS VIN VOUT
3-PIN TO-39 METAL CAN T-PACKAGE
SG120-XXT/883B SG120-XXT
-55C to 125C -55C to 125C
GROUND VOUT 1 2 3 VIN
CASE IS VIN
3-PIN HERMETIC TO-257 IG-PACKAGE (Isolated)
SG120-XXIG/883B SG120-XXIG
-55C to 125C -55C to 125C
VOUT VIN GROUND
20-PIN CERAMIC (LCC) LEADLESS CHIP CARRIER L- PACKAGE
SG120-XXL/883B SG120-XXL
-55C to 125C -55C to 125C
(Note 4)
1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
N.C. VIN N.C. VOUT VOUT N.C. VOUT SENSE N.C. N.C. N.C.
3
2
1
20 19 18 17 16 15 14
4 5 6 7 8 9 10 11 12 13
11. 12. 13. 14. 15. 16. 17. 18. 19. 20.
N.C. N.C. N.C. N.C. GND N.C. GND N.C. N.C. VIN
Note 1. 2. 3. 4.
Contact factory for JAN and DESC product availability. All parts are viewed from the top. "XX" to be replaced by output voltage of specific fixed regulator. Some products will be available in leadless chip carrier (LCC) and hermetic flat pack (F). Consult factory for price and availability
11/91 Rev 1.4 6/97
Copyright 1997
8
11861
Western
LINFINITY
Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
Microelectronics
Inc.

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