SG117A/SG117 1.5A Three Terminal Adjustable Voltage Regulator Description Features The SG117 and SG117A are 3-terminal positive adjustable voltage regulators which offer improved performance over the original 117 design. A major feature of the SG117A is a reference voltage tolerance guaranteed within 1%, allowing an overall power supply tolerance to be better than 3% using inexpensive 1% resistors. Line and load regulation performance has been improved as well. Adjustable Output Down to 1.25V 1% Output Voltage Tolerance 0.01%/V Line Regulation 0.3% Load Regulation Min. 1.5A Output Current Typical 80dB Ripple Rejection Available in Hermetic TO-257 Moreover, the SG117A reference voltage is guaranteed not to exceed 2% when operating over the full load, line and power dissipation conditions. The SG117A adjustable regulators offer an improved solution for all positive voltage regulator requirements with load currents up to 1.5A. High Reliability Features - SG117A/SG117 In addition to replacing many fixed regulators, the SG117/A can be used in a variety of other applications due to its `floating' design as long as the input-to-output differential maximum is not exceeded, such as a current source. A higher voltage version is available the SG117AHV and SG117HV which offers input voltage up to 60V. Available to MIL-STD-883, 1.2.1 MSC-AMS level "S" Processing Available Available to DSCC - Standard Microcircuit Drawing (SMD) MIL-M-38510/7703405XA SG117AT-JAN MIL-M-38510/7703405YA SG117AK-JAN Schematic Diagram Figure 1 * Block Diagram January 2015 Rev. 1.4 www.microsemi.com (c) 2015 Microsemi Corporation- Analog Mixed Signal 1 1.5A 3-Terminal Adjustable Voltage Regulator Connection Diagrams and Ordering Information Ambient Temperature Type Package Part Number Packaging Type Connection Diagram SG117AK SG117AK-883B ADJUSTMENT SG117AK-DESC -55C to 125C K 3-TERMINAL METAL CAN 1 SG117K TO-3 2 SG117K-883B VIN SG117K-DESC SG117K-JAN SG117AT SG117AT-883B SG117AT-DESC -55C to 125C T 3-TERMINAL METAL CAN SG117T VIN TO-39 ADJUST SG117T-883B 1 2 3 VOUT SG117T-DESC SG117T-JAN SG117AIG -55C to 125C IG SG117AIG-883B 3-Pin HERMETIC SG117AIG-DESC Package (Isolated) SG117IG VIN TO-257 VOUT ADJUST Case is Isolated SG117IG-883B SG117IG-DESC SG117AG SG117AG-883B -55C to 125C G VIN 3-Pin HERMETIC SG117AG-DESC Package SG117G TO-257 SG117G-883B SG117G-DESC 2 VOUT ADJUST Case is VOUT Connection Diagrams and Ordering Information Connection Diagrams and Ordering Information Ambient Temperature Type Package Part Number Packaging Type Connection Diagram SG117AL SG117AL-883B -55C to 125C L 20-Pin Ceramic SG117AL-DESC SG117L CLCC SG117L-883B SG117L-DESC Notes: 1. Contact factory for JAN and DESC part availability. 2. All parts are viewed from the top. 3. For devices with multiple inputs and outputs both must be externally connected together at the device terminals. 4. For normal operation, the SENSE pin must be externally connected to the load. 5. These Hermetic Packages use Sn63/Pb37 hot solder dip lead finish, contact factory for availability of RoHS versions. 3 1.5A 3-Terminal Adjustable Voltage Regulator Absolute Maximum Ratings Parameter Power Dissipation Input to Output Voltage Differential Storage Temperature Range Maximum Operating Junction Temperature Value Units Internally Limited 40 V -65 to 150 C 150 C Lead Temperature (Soldering, 10 seconds) 300 C Notes: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of specified terminal. Thermal Data Value Units Thermal Resistance-Junction to Case, JC 3 C/W Thermal Resistance-Junction to Ambient, JA 35 C/W Thermal Resistance-Junction to Case, JC 15 C/W Thermal Resistance-Junction to Ambient, JA 120 C/W Thermal Resistance-Junction to Case, JC 3.5 C/W Thermal Resistance-Junction to Ambient, JA 42 C/W Thermal Resistance-Junction to Case, JC 3.5 C/W Thermal Resistance-Junction to Ambient, JA 42 C/W 35 C/W Parameter K Package: 3 Terminal TO-3 Metal Can T Package: 3-Pin TO-39 Metal Can IG Package: 3-Pin TO-257 Hermetic (Isolated) G Package: 3-Pin TO-257 Hermetic L Package: 20-Pin Ceramic (LCC) Leadless Thermal Resistance-Junction to Case, JC C/W Thermal Resistance-Junction to Ambient, JA 120 Notes: 1. Junction Temperature Calculation: TJ = TA + (PD x JA). 2. 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 Parameter Input Voltage Range Value Units VOUT +3.5V to 37 V -55 to 125 C Operating Ambient Temperature Range SG117A / SG117 Note: Range over which the device is functional. 4 Electrical Characteristics Electrical Characteristics Unless otherwise specified, these characteristics apply over the full operating ambient temperature for the SG117A / SG117 with -55C < TA < 125C, VIN - VOUT = 5.0V and for IOUT = 500mA (K, G, and IG) and IOUT = 100mA (T, and L packages). Although power dissipation is internally limited, these specifications are applicable for power dissipations of 2W for the T, and L packages, and 20W for the K, G, and IG packages. IMAX is 1.5A for the K, G, and IG packages and 500mA for the T, and L packages. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature. SG117A Parameter SG117 Test Condition Units Min Typ Max Min Typ Max 1.20 1.25 1.30 Reference Section Reference Voltage IOUT = 10mA, TA = 25C 3V (VIN - VOUT ) 40V, P PMAX 10mA IOUT IMAX 1.238 1.250 1.262 1.225 1.250 1.270 V Output Section Line Regulation 3V (VIN - VOUT) 40V, IL = 10mA TA = 25C 0.005 0.01 0.01 0.02 TA = TMIN to TMAX 0.01 0.02 0.02 0.05 %/V 10mA IOUT IMAX Load Regulation VOUT 5V, TA = 25C 5 15 5 15 mV VOUT > 5V, TA = 25C 0.1 0.3 0.1 0.3 % VOUT 5V 20 50 20 50 mV VOUT > 5V 0.3 1 0.3 1 % 0.002 0.02 0.03 0.07 %/W Thermal Regulation TA = 25C, 20ms pulse Ripple Rejection VOUT = 10V, f = 120Hz CADJ = 1F, TA = 25C CADJ = 10F Minimum Load Current (VIN - VOUT) = 40V Current Limit (VIN - VOUT) 15V 65 66 65 80 3.5 66 5 dB 80 3.5 K, P, G, IG Packages 1.5 2.2 1.5 2.2 T, L Packages 0.5 0.8 0.5 0.8 K, P, G, IG Packages 0.3 0.4 0.3 0.4 T, L Packages 0.15 0.2 0.15 0.2 5 mA A (VIN - VOUT) = 40V, TJ = 25C Temperature Stability Long Term Stability RMS Output Noise (% of VOUT) Adjust Section Adjust Pin Current TA = 125C, 1000 Hours TA = 25C, 10Hz f 10kHz 1 2 1 0.3 1 0.3 0.001 50 A 1 % 0.001 100 50 100 A 10mA < IOUT < IMAX, 0.2 5 0.2 5 2.5V < (VIN - VOUT) < 40V Regulation is measured at constant junction temperature, using pulse testing with low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. These parameters, although guaranteed, are not tested in production. Adjust Pin Current Change 5 1.5A 3-Terminal Adjustable Voltage Regulator Characteristic Curves 6 Figure 2 * Output Voltage Deviation vs. Temperature Figure 3 * Output Current vs. Input / Output Differential Figure 4 * Adjust Current vs. Temperature Figure 5 * Input / Output Differential vs. Temperature Figure 6 * Reference Voltage vs. Temperature Figure 7 * Quiescent Current vs. Input /Output Differential Characteristic Curves Characteristic Curves Figure 8 * Ripple Rejection vs. Output Voltage Figure 10 * Ripple Rejection vs. Output Current Figure 12 * Line Transient Response Figure 9 * Ripple Rejection vs. Frequency Figure 11 * Output Impedance vs. Frequency Figure 13 * Load Transient Response 7 1.5A 3-Terminal Adjustable Voltage Regulator Characteristic Curves Figure 14 * Output Impedance vs. Frequency Figure 15 * Line Transient Response Figure 16 * Load Transient Response 8 Application Information Application Information General The SG117A develops a 1.25V reference voltage between the output (OUT) and the adjust (ADJ) terminals (see Basic Regulator Circuit). By placing a resistor, R1 between these two terminals, a constant current is caused to flow through R1 and down through R2 to set the overall output voltage. Normally this current is the specified minimum load current of 5mA or 10mA. It is important to maintain this minimum output load current requirement otherwise the device may fail to regulate, and the output voltage may rise. VOUT VREF 1 I ADJ R 2 R1 R2 Figure 17 * Basic Regulator Circuit The IADJ current does add an error to the output divider ratio, however because I ADJ is very small and constant when compared with the current through R1, it represents a small error and can often be ignored. It is easily seen from the above equation, that even if the resistors were of exact value, the accuracy of the output is limited by the accuracy of VREF. With a guaranteed 1% reference, a 5V power supply design, using 2% resistors, would have a worse case manufacturing tolerance of 4%. If 1% resistors were used, the tolerance would drop to 2.5%. A plot of the worst case output voltage tolerance as a function of resistor tolerance is shown below. Figure 18 * Voltage Tolerance vs. Resistor Tolerance Bypass Capacitors Input bypassing using a 0.1 F ceramic or 1F solid tantalum is recommended, and especially when any input filter capacitors are more than 5 inches from the device. A 0.1F bypass capacitor on the ADJ pin is required if the load current varies by more than 1A/sec. Improved ripple rejection (80dB) can be accomplished by adding a 10F capacitor from the ADJ pin to ground. Figure 19 * Improving Ripple Rejection 9 1.5A 3-Terminal Adjustable Voltage Regulator While the SG117 is stable with no output capacitor, for improved AC transient response and to prevent the possibility of oscillation due to an unknown reactive load, a 1F capacitor is also recommended at the output. Because of their low impedance at high frequencies, the best type of capacitor to use is solid tantalum; ceramic capacitors may also be used. When bypass capacitors are used, it may be necessary to provide external protection diodes to prevent this external large capacitance from discharging through internal low current paths, which may damage the device. Although the duration of any surge current is short, there may be sufficient energy to damage the regulator. This is particularly true of the large capacitance on the ADJ pin when output voltages are higher than 25V. Such a capacitor could discharge into the ADJ pin when either the input or output is shorted. See figure below. D1 1N4002 SG117A IN VOUT OUT ADJ R1 C1 D2 1N4002 1 F R2 Note: D1 protects against C1 D2 protects against C2 C2 10F Figure 20 * Use of Protection Diodes Load Regulation Because the SG117A is a three-terminal device, it is not possible to provide true remote load sensing. Load regulation will be limited by the resistance of the wire connecting the regulator to the load. From the data sheet specification, regulation is measured at the bottom of the package. Negative side sensing is a true Kelvin connection, with the bottom of the output divider returned to the negative side of the load. Although it may not be immediately obvious, best load regulation is obtained when the top of the divider is connected directly to the case, not to the load. This is illustrated in (Connections for Best Load Regulation). If R1 were connected to the load, the effective resistance between the regulator and the load would be: R 2 R1 R , R P 1 RP ParasiticLineResistance Connected as shown, RP is not multiplied by the divider ratio. RP is about 0.004 per foot using 16 gauge wire. This translates to 4mV/ft. at 1A load current, so it is important to keep the positive lead between regulator and load as short as possible. Figure 21 * Connections for Best Load Regulation 10 Application Information Current Limit As outlined in the Electrical Characteristics the current limit will activate whenever the output current exceeds the specified levels. It is also important to bear in mind that the regulator includes a foldback-current characteristic that limits the current at higher VIN to VOUT differential voltages. This power limiting characteristic will prevent the regulator from providing full output current depending on the V IN to V= differential. Also if during a short circuit situation the regulator was presented with a voltage that exceeds the Absolute Maximum Rating of 40V (e.g. VIN > 40V, VOUT = 0V) the device may fail, or be permanently damaged. Typical Applications Figure 22 * 1.2V - 25V Adjustable Regulator Figure 23 * 5V Regulator with Shut Down SG117A IN IOUT = VREF/R1* OUT R1 ADJ * 0.8 R1 120 Figure 24 * Figure 25 * Programmable Current Limiter 11 1.5A 3-Terminal Adjustable Voltage Regulator PACKAGE OUTLINE DIMENSIONS Controlling dimensions are in inches, metric equivalents are shown for general information. Dim D D1 Q A D D1 A e F b L1 e1 L k k1 b1 MILLIMETERS MIN MAX 8.89 8.13 4.19 9.40 8.51 4.70 INCHES MIN MAX 0.350 0.320 0.165 0.370 0.335 0.185 b F e 0.41 0.48 1.02 5.08 BSC 0.016 0.019 0.040 0.200 BSC k k1 L 0.71 0.74 12.70 0.028 0.029 0.500 e1 b1 Q L1 45 TYP 2.54 TYP 0.41 0.53 90 TYP 1.27 0.86 1.14 14.48 0.034 0.045 0.570 45 TYP 0.100 TYP 0.016 0.021 90 TYP 0.50 Figure 26 * T 3-Pin Metal Can TO-39 Package Dimensions E3 D Dim E A A1 L2 L 8 3 MILLIMETERS MIN 13 MAX D/E E3 e 8.64 9.14 8.128 1.270 BSC 0.340 0.360 0.320 0.050 BSC B1 L A 0.635 TYP 1.02 1.52 1.626 2.286 0.025 TYP 0.040 0.060 0.064 0.090 h A1 A2 1.016 TYP 1.372 1.68 1.168 0.040 TYP 0.054 0.066 0.046 L2 B3 1.91 2.41 0.203R 0.075 0.95 0.008R 1. All exposed metalized area shall be gold plated 60 micro-inch minimum thickness over nickel plated unless otherwise specified in purchase order. h 18 B1 e B3 Figure 27 * L 20-Pin Ceramic Leadless Chip Carrier (LCC) Package Dimensions 12 INCHES MIN Note: 1 A2 MAX PACKAGE OUTLINE DIMENSIONS PACKAGE OUTLINE DIMENSIONS Dim E A V P A1 Z D O D1 J H L b e A2 MILLIMETERS MIN MAX INCHES MIN MAX A A1 A2 4.70 0.89 2.92 5.21 1.14 3.18 0.185 0.035 0.115 0.205 0.045 0.125 b D D1* 0.71 16.38 10.41 .081 16.76 10.92 0.027 0.645 0.410 0.032 0.660 0.430 e E* H 2.54 BSC 10.41 10.67 0.50 0.100 BSC 0.410 0.420 0.020 L O P J V Z 12.70 13.39 3.56 0.500 0.527 0.140 13.64 3.81 0.10 5.13 5.38 1.40 TYP 0.537 0.150 0.004 0.202 0.212 0.055 TYP *Excludes Weld Fillet Around Lid. Figure 28 * G/IG 3-Pin Hermetic TO-257 Package Dimensions D A Dim F b L q S R R1 e e1 MILLIMETERS MIN MAX INCHES MIN MAX A q b 6.86 29.90 0.97 7.62 30.40 1.09 0.270 1.177 0.038 0.300 1.197 0.043 D S e 19.43 16.64 10.67 19.68 17.14 11.18 0.765 0.655 0.420 0.775 0.675 0.440 E1 F R1 5.21 1.52 3.84 5.72 2.03 4.09 0.205 0.060 0.151 0.225 0.080 0.161 L R 10.79 12.57 12.19 13.34 0.425 0.495 0.480 0.525 Figure 29 * K 3-Pin TO-3 Package Dimensions 13 Microsemi Corporation (Nasdaq: MSCC) offers a comprehensive portfolio of semiconductor and system solutions for communications, defense & security, aerospace and industrial markets. Products include high-performance and radiation-hardened analog mixed-signal integrated circuits, FPGAs, SoCs and ASICs; power management products; timing and synchronization devices and precise time solutions, setting the world's standard for time; voice processing devices; RF solutions; discrete components; security technologies and scalable anti-tamper products; Power-over-Ethernet ICs and midspans; as well as custom design capabilities and services. Microsemi is headquartered in Aliso Viejo, Calif., and has approximately 3,400 employees globally. Learn more at www.microsemi.com. Microsemi Corporate Headquarters One Enterprise, Aliso Viejo, CA 92656 USA Within the USA: +1 (800) 713-4113 Outside the USA: +1 (949) 380-6100 Sales: +1 (949) 380-6136 Fax: +1 (949) 215-4996 E-mail: sales.support@microsemi.com (c) 2015 Microsemi Corporation. All rights reserved. Microsemi and the Microsemi logo are trademarks of Microsemi Corporation. All other trademarks and service marks are the property of their respective owners. Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any particular purpose, nor does Microsemi assume any liability whatsoever arising out of the application or use of any product or circuit. The products sold hereunder and any other products sold by Microsemi have been subject to limited testing and should not be used in conjunction with mission-critical equipment or applications. Any performance specifications are believed to be reliable but are not verified, and Buyer must conduct and complete all performance and other testing of the products, alone and together with, or installed in, any end-products. Buyer shall not rely on any data and performance specifications or parameters provided by Microsemi. It is the Buyer's responsibility to independently determine suitability of any products and to test and verify the same. The information provided by Microsemi hereunder is provided "as is, where is" and with all faults, and the entire risk associated with such information is entirely with the Buyer. Microsemi does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other IP rights, whether with regard to such information itself or anything described by such information. Information provided in this document is proprietary to Microsemi, and Microsemi reserves the right to make any changes to the information in this document or to any products and services at any time without notice. SG117 1.4/01.15