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SG109/SG309
5 -VOLT FIXED VOLTAGE REGULATORS
DESCRIPTION
The SG109/SG309 is a completely self-contained 5V regulator. Designed to provide local regualtion at currents up to 1A for digital logic cards, this device is available in the hermetic TO-3, TO-66, TO39 and hermetic and plastic TO-220. A major feature of the SG109's design is its built-in protective features which make it essentially blowout proof. These consist of both current limiting to control the peak currents and thermal shutdown to protect against excessive power dissipation. With the only added component being a possible need for an input bypass capacitor, this regulator becomes extremely easy to apply. 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.
FEATURES
* * * * * * Fully compatible with TTL and DTL Output current in excess of 1A Internal thermal overload protection No additional external components Bandgap reference voltage Foldback current limiting
HIGH RELIABILITY FEATURES-SG109
Available to MIL-STD-883 MIL - M38510 / 10701BXA - JAN109T Radiation data available LMI level "S" processing available
SCHEMATIC
4/90 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.
SG109/SG309
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage ........................................................................ 35V Power Dissipation ........................................... Internally Limited Storage Temperature Range ............................. -65C to 150C
Note 1. Exceeding these ratings could cause damage to the device.
Operating Junction Temperature Hermetic (K, R, T, IG-Packages) .................................. 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 IG Package: Thermal Resistance-Junction to Case, JC ................. 3.5C/W Thermal Resistance-Junction to Ambient, JA .............. 42C/W T Package: Thermal Resistance-Junction to Case, JC .................. 15C/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)
Input Voltage Range ............................................... 7.0V to 25V Operating Junction Temperature Range SG109 ............................................................ -55C to 150C SG309 ............................................................... 0C to 125C
Note 2. Range over which the device is functional.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG109 with -55C TA 150C, SG309 with 0C TA 125C, and for V IN = 10V, IOUT = 500mA (K, R, and IG -Power Packages-) and IOUT = 100mA (T-package). Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Parameter Output Voltage Line Regulation Load Regulation
Test Conditions TA = 25C VIN = 7.1V to 25V, TA = 25C TA = 25C Power Pkgs: IOUT = 5mA to 1.5A T-package: IOUT =5mA to 500mA VIN= 7.4V to 25V Power Pkgs: IOUT = 5mA to 1.0A, P 20W T-package: IOUT =5mA to 200mA, P 20W VIN = 7.4V to 25V With Line : VIN = 7.4V to 25V With Load: Power Pkgs: IOUT = 5mA to 1.0A T-package: IOUT =5mA to 200mA f = 10Hz to 100KHz, TA = 25C TA = 25C
SG109 SG309 Min. Typ. Max. Min. Typ. Max. 4.8 5.05 5.2 4.7 5.05 5.3 4.0 50 50 4.0 15 15 100 50 15 15 100 50
Units V mV mV mV
Total Output Voltage Tolerance
4.6 4.6
5.0 5.0
Quiescent Current Quiescent Current Change
5.4 5.4 10 0.5 0.8 0.8
4.75 4.75
5.00 5.00
5.25 5.25 10 0.5 0.8 0.8
Output Noise Voltage Long Term Stability Ripple Rejection
40 10 50 50
40 20
V V mA mA mA mA V mV dB
4/90 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.
SG109/SG309
APPLICATION CIRCUITS
FIGURE 1 - FIXED 5V REGULATOR
FIGURE 2 - ADJUSTABLE OUTPUT REGULATOR
CONNECTION DIAGRAMS & ORDERING INFORMATION
Package
3-TERMINAL TO-3 METAL CAN K-PACKAGE
(See Notes Below)
Part No. SG109K/883B SG109K SG309K
Ambient Temperature Range -55C to 125C -55C to 125C 0C to 70C
Connection Diagram
VIN
1 2 CASE IS GROUND VOUT
3-TERMINAL TO-66 METAL CAN R-PACKAGE
SG109R/883B SG109R SG309R
-55C to 125C -55C to 125C 0C to 70C
VIN
1 2 CASE IS GROUND VOUT
3-PIN HERMETIC TO-257 IG-PACKAGE (Isolated)
SG109IG/883B SG109IG
-55C to 125C -55C to 125C
TAB IS GROUND
VOUT GROUND VIN
3-PIN TO-39 METAL CAN T-PACKAGE
SG109T/883B JAN109T SG109T SG309T
-55C to 125C -55C to 125C -55C to 125C 0C to 70C
VIN VOUT
1 2 3 GROUND
Note 1. Contact factory for JAN and DESC product availability. 2. All parts are viewed from the top. 4/90 Rev 1.1 2/94
Copyright (c) 1994
3. Product is also available in leadless chip carrier (LCC) and hermetic flat pack (F). Contact factory for price and availability.
11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570
LINFINITY
Microelectronics Inc.
3

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