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SG1532/SG2532/SG3532
PRECISION GENERAL-PURPOSE REGULATOR
DESCRIPTION
This monolithic integrated circuit is a versatile, general-purpose voltage regulator designed as a substantially improved replacement for the popular SG723 device. The SG1532 series regulators retain all the versatility of the SG723 but have the added benefits of operation with input voltages as low as 4.5 volts and as high as 50 volts; a low noise, low voltage reference; temperature compensated, low threshold current limiting; and protective circuits which include thermal shutdown and independent current limiting of both the reference and output voltages. A separate remote shutdown terminal is included . In the dual-in-line package an open collector output is available for low input-output differential applications. These devices are available in both hermetic 14-pin cerdip and 10-pin TO96 packages. In the T-package, these units are interchangeable with the LAS1000 and LAS-1100 regulators. The SG1532 is rated for operation over the ambient temperature range of -55C to 125C while the SG2532 and SG3532 are intended for industrial applications of 0C to 70C.
FEATURES
* * * * * * Input voltage range of 4.5V to 50V 2.5V low noise reference Independent shutdown terminal Improved line and load regulation 80mV current limit sense voltage Fully protected including thermal shutdown * Useful output current to 150mA
HIGH RELIABILITY FEATURES -SG1532
Available to MIL-STD-883 LMI level "S" processing available
BLOCK DIAGRAM
2/93 Rev 1.1 2/94
Copyright (c) 1994
1
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
SG1532/SG2532/SG3532
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Pulse (50 ms) Input Voltage from VIN to V- ....................... 50V Continuous Input Voltage from VIN to V-............................ 40V Input to Output Voltage Differential................................... 40V Maximum Output Current ........................................... 250mA Current from VZ (J, L-Package only)............................. 100mA
Note 1. Exceeding these ratings could cause damage to the device.
Current from VREF.......................................................... Operating Junction Temperature Hermetic (T, J, L-Packages)....................................... Storage Temperature Range .......................... -65C to Lead Temperature (Soldering, 10 Seconds) .................
25mA 150C 150C 300C
THERMAL DATA
J Package: Thermal Resistance-Junction to Case, JC .................. 30C/W Thermal Resistance-Junction to Ambient, JA .............. 80C/W T Package: Thermal Resistance-Junction to Case, JC .................. 25C/W Thermal Resistance-Junction to Ambient, JA ........... 130C/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/pcboard system. All of the above assume no ambient airflow.
RECOMMENDED OPERATING CONDITIONS (Note 2)
Input Voltage Range SG1532/SG2532 ................................................. 5V to 45V SG3532 .............................................................. 5V to 36V Output Current Range ....................................... 1mA to 100mA
Note 2. Range over which the device is functional.
Reference Current ........................................................ 5mA Zener Current (J & L-Packages only) ........................... 20mA Operating Ambient Temperature Range SG1532 ........................................................ -55C to 125C SG2532/SG3532 .............................................. 0C to 70C
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG1532 with -55C TA 125C, SG2532 with 0C TA 70C, SG3532 with 0C TA 70C, VIN = 10V, VOUT = 5V, and IOUT = 1mA. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
ELECTRICAL CHARACTERISTICS
Parameter Input Voltage Range Output Voltage Range Max Output Current Min (VIN - VOUT) Reference Voltage Temperature Stability (Note 4) Ref Short Circuit Current Line Regulation (Note 3) Load Regulation (Note 3) Current Limit Sense Voltage Shutdown Voltage Threshold Shutdown Source Current Zener Voltage Standby Current Error Amplifier Offset Voltage Error Amplifier Input Bias Current TA = 25C
Test Conditions
RSC = 0, VOUT = 0, TA = 25C IOUT = 100mA, TA = 25C TA = 25C VREF = 0, TA = 25C 8V VIN 40V 8V VIN 20V, IOUT = 25mA 1mA IOUT 25mA 1mA IOUT 100mA RSC = 100, VOUT = 0V VOUT = high IOUT = 10mA, (J and L-Packages only) VIN = 40V
SG1532/SG2532 Min. Typ. Max. 4.5 50 4.7 50 2.0 38 175 250 1.7 2.0 2.40 2.50 2.60 2.35 2.65 0.005 0.015 15 25 0.005 0.01 0.01 0.02 0.002 0.004 0.002 0.005 0.06 0.08 0.10 0.40 0.70 1.0 100 200 300 6.0 6.4 7.2 2.5 3.5 2.0 10 4.0 15
SG3532 Units Typ. Max. 40 V 40 V 38 V 175 250 mA 1.7 2.0 V 2.40 2.50 2.60 V 2.35 2.65 V 0.005 0.015 %/C 15 25 mA 0.005 0.02 %/V 0.01 0.03 %/V 0.002 0.004 %/mA 0.002 0.005 %/mA 0.06 0.08 0.10 V 0.40 0.70 1.0 V 100 200 300 A 6.0 6.4 7.2 V 2.5 3.5 mA 2.0 15 mV Min. 4.5 4.7 2.0 4.0 20 A
2/93 Rev 1.1 2/94
Copyright (c) 1994
2
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
SG1532/SG2532/SG3532
ELECTRICAL CHARACTERISTICS (continued)
Parameter Open Loop Gain Ripple Rejection Output Noise (Note 4) Long Term Stability (Note 4) Thermal Shutdown (Note 4) Test Conditions TA = 25C f = 120Hz, TA = 25C 10Hz f 100KHz, TA = 25C VIN = 30V, TA = 125C SG3532 SG1532/SG2532 Units Min. Typ. Max. Min. Typ. Max. 66 68 60 68 dB 66 66 dB 50 50 VRMS 0.3 1.0 0.3 1.0 %/Khr C 175 175
Note 3. Applies for constant junction temperature. Temperature drift effects must be taken into account separately when the unit is operating under conditions of high dissipation. Note 4. These parameters, although guaranteed, are not tested in production.
CHARACTERISTIC CURVES
FIGURE 1. STANDBY CURRENT
FIGURE 2. MINIMUM INPUT-OUTPUT VOLTAGE
FIGURE 3. CURRENT LIMITING
FIGURE 4. RIPPLE REJECTION
2/93 Rev 1.1 2/94
Copyright (c) 1994
3
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
SG1532/SG2532/SG3532
CHARACTERISTIC CURVES (continued)
FIGURE 5. FREQUENCY RESPONSE
FIGURE 6. TRANSIENT RESPONSE
APPLICATION INFORMATION
FIGURE 7 - 90% EFFICIENT LINEAR REGULATOR Output Voltage = 5V Min (VIN-VOUT) at 2A = 0.4V Load Reg 0-2A = 20mV Max Output Current = 3A Line Reg 6-30V = 10 mV
FIGURE 8 - HIGH CURRENT REGULATOR WITH FOLDBACK CURRENT LIMITING AND REMOTE SHUTDOWN Output Voltage = 5V Max Output Current = 8A Min VIN at No Load = 6.9V Min VIN at 5A = 8.2V Line Reg 10-30V = 3mV Load Reg 0-5A = 17mV Short Circuit Current = 1.8A
Notes: For output voltages above 8V and load currents which allow PNP base current to be limited to 25mA, the internal zener may be used, eliminating the need for the two external diodes and the divider on VREF . RSC can be eliminated if the 200mA current limit on VOUT is adequate. Overall current limiting is dependent upon PNP Beta. For greater accuracy, load currrent may be sensed in the ground line.
Note: * 100 surge limiting resistor should be used for output voltages above 8V.
2/93 Rev 1.1 2/94
Copyright (c) 1994
4
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
SG1532/SG2532/SG3532
APPLICATION INFORMATION
FIGURE 9 - HIGH EFFICIENCY LOW VOLTAGE REGULATOR Output Voltage = 5V Max Output Current = 9A Min VIN at 5A = 7.0V Line Reg 7-20V = 10mV Load Reg 0-5A = 25mV Constant Current Limiting
FIGURE 10 - BASIC LOW CURRENT REGULATOR Sense Voltage R1 ISC = 1+ VOUT = VREF RSC R2 R1 R2 CC = 1000 pF R3 = R +R 1 2 IOUT 100mA
CONNECTION DIAGRAMS & ORDERING INFORMATION
Package
14-PIN CERAMIC DIP J - PACKAGE
(See Notes Below)
Part No. SG1532J/883B SG1532J/DESC SG1532J SG2532J SG3532J
Ambient Temperature Range -55C to 125C -55C to 125C -55C to 125C 0C to 70C 0C to 70C
Connection Diagram
N.C. CURRENT LIMIT CURRENT SENSE INVERTING INPUT NON-INVERTING INPUT VREF V1 2 3 4 5 6 7 14 13 12 11 10 9 8
N.C. FREQ. COMPENSATION VIN VC VOUT VZ SHUTDOWN
10-PIN METAL CAN T - PACKAGE
SG1532T/883B SG1532T/DESC SG1532T SG2532T SG3532T
-55C to 125C -55C to 125C -55C to 125C 0C to 70C 0C to 70C
(Notes 3 & 4)
CURRENT LIMIT
10
CURRENT SENSE INVERTING INPUT NON-INVERTING INPUT VREF
2 3
1
9 8 7
FREQ. COMPENSATION VIN & V C SHUTDOWN
4
5
6
VOUT
V-
20-PIN CERAMIC LEADLESS CHIP CARRIER L- PACKAGE
SG1532L/883B SG1532L
-55C to 125C -55C to 125C
1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
N.C. CURRENT LIMIT CURRENT SENSE N.C. INVERTING INPUT N.C. N. I. INPUT VREF N.C. V-
3 4 5 6 7 8
2
1
20 19 18 17 16 15 14
9 10 11 12 13
11. 12. 13. 14. 15. 16. 17. 18. 19. 20.
N.C. SHUTDOWN VZ N.C. VOUT N.C. VC VIN N.C. FREQ. COMP.
Note 1. Contact factory for JAN and DESC product availablity. 2. All packages are viewed from the top.
Note 3. VZ output is not available in T-package. 4. Pin 5 is connected to case.
2/93 Rev 1.1 2/94
Copyright (c) 1994
5
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.

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