SG1548J-DESC

SG1548 QUAD POWER FAULT MONITOR Description Features The SG1548 is an integrated circuit capable of monitoring up to four positive DC supply voltages simultaneously for overvoltage and undervoltage fault conditions. An on-chip inverting op amp also allows monitoring one negative DC voltage. The fault tolerance window is accurately programmable from ±5% to ±40% using a simple divider network on the 2.5V reference. A single external capacitor sets the fault indication delay, eliminating false outputs due to switching noise, logic transition current spikes, and short-term AC line interruptions. An additional comparator referenced to 2.5V allows the AC line to be monitored for undervoltage conditions or for generation of a line clock. The comparator can also be used for programmable undervoltage lockout in a switching power supply. Uncommitted collector and emitter outputs permit both inverting and non-inverting operation. External availability of the precision 2.5V reference and open-collector logic outputs permit expansion to monitor additional voltage using available open-collector quad comparators.           Monitors Four DC Voltages and the AC Line Precision 2.5V ±1% Low-drift Reference Fault Tolerance Adjustable from ±5% to ±40% ±3% Trip Threshold Tolerance over Temperature Separate 10mA, 40V Overvoltage, Undervoltage, and AC line Fault Outputs Fault Delay Programmable with a Single Capacitor 30mV Comparator Hysteresis to Prevent Oscillations On-Chip Inverting Op-Amp for Negative Voltage Open-Collector Output Logic or Expandability Operation from 4.5V to 40V Supply High Reliability Features Following are the high reliability features of SG1548:  Available to MIL-STD-883, ¶ 1.2.1  Radiation data available  MSC-AMS level "S" processing available Block Diagram Figure 1 · Block Diagram December 2014 Rev. 1.3a www.microsemi.com © 2014 Microsemi Corporation 1 QUAD POWER FAULT MONITOR Connection Diagrams and Ordering Information Ambient Temperature Type -55°C to 125°C J Package 16-PIN CERAMIC DIP -25°C to 85°C Part Number Packaging Type SG1548J-883B CERDIP N 0°C to 70°C -25°C to 85°C DW 0°C to 70°C 16-PIN SMALLOUTLINE WIDE BODY LOWER THRESHOLD GROUND 1 16 2 15 V REF +V IN 3 14 4 13 LINE SENSE 5 12 EMITTER OUTPUT COLLECTOR OUTPUT 6 11 INV. OUTPUT INV. INPUT SENSE 4 SENSE 3 SENSE 2 SENSE 1 7 10 U.V. FAULT DELAY 8 9 O.V. FAULT SG1548J SG2548N* 16-PIN PLASTIC DIP Connection Diagram PDIP N package: Pb-free / RoHS 100% Matte Tin Lead Finish SG3548N* 1 16 2 15 V REF +V IN LINE SENSE EMITTER OUTPUT COLLECTOR OUTPUT 3 14 INV. OUTPUT INV. INPUT SENSE 4 4 13 SENSE 3 5 12 6 11 7 10 SENSE 2 SENSE 1 U.V. FAULT DELAY 8 9 O.V. FAULT LOWER THRESHOLD GROUND SG2548DW* SOWB SG3548DW* DW package: Pb-free / RoHS 100% Matte Tin Lead Finish -55°C to 125°C L 20-PIN CERAMIC (LCC) SG1548L-883B CLCC SG1548L 1. N.C. 2. LOWER THRESHOLD 3. GROUND 4 4. V REF 5 5. +V IN 6. N.C. 6 7. LINE SENSE 7 8. EMITTER OUTPUT 8 9. COLLECTOR OUTPUT 10.DELAY 3 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. O.V. FAULT U.V. FAULT SENSE 1 SENSE 2 N.C. SENSE 3 SENSE 4 INV. INPUT INV. OUTPUT Notes: 1. Contact factory for DESC product availability. 2. All parts are viewed from the top. 3. Hermetic Packages J & L use Pb37/Sn63 hot solder lead finish, contact factory for availability of RoHS versions. *RoHS Compliant 2 Absolute Maximum Ratings1 Absolute Maximum Ratings1 Value Units 40 V 40 -0.3V to 6.0V V V Fault Output Sink Current Line Sense Input Current 20 ±1 mA mA Inverting Op Amp Input Current Inverting Op Amp Output Current -5 25 mA mA Operating Junction Temperature Hermetic (J, L Packages) 150 °C 150 -65 to 150 °C °C Parameter Supply Voltage (+VIN) Fault Output Collector Voltage Sense Input Voltage Range Plastic (N, DW Packages) Storage Temperature Range Lead Temperature 300 Notes: 1. Values beyond which damage may occur. 2. Pb-free / RoHS Peak Package Solder Reflow Temp. (40 second max. exposure). 260°C (+0, -5) °C Thermal Data Value Units Thermal Resistance-Junction to Case, θJC Thermal Resistance-Junction to Ambient, θJA 30 80 °C/W °C/W N Package Thermal Resistance-Junction to Case, θJC Parameter J Package 40 °C/W Thermal Resistance-Junction to Ambient, θJA DW Package 65 °C/W Thermal Resistance-Junction to Case, θJC Thermal Resistance-Junction to Ambient, θJA 40 95 °C/W °C/W L Package Thermal Resistance-Junction to Case, θJC 35 °C/W Thermal Resistance-Junction to Ambient, θJA 120 °C/W Notes: 1. Junction Temperature Calculation: TJ = TA + (PD × θJA). 2. The above numbers for θJC are maximums for the limiting thermal resistance of the package in a standard mounting configuration. The θJA numbers are meant to be guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow. 3 QUAD POWER FAULT MONITOR Recommended Operating Conditions1 Supply Voltage Range ±25% Maximum Fault Window ±40% Maximum Fault Window Lower Threshold Input Range (2) Fault Tolerance Window Range Fault Output Sink Current Range Line Sense Output Current Range Voltage Reference Output Current Operating Ambient Temperature Range SG1548 SG2548 SG3548 Notes: 1. Range over which the device is functional. 2. Limited by inverter amplifier positive swing at -55°C. 4 Value Units 4.5 to 35 V 5.0 to 35 1.5 to 2.45 V V ±5 to ±40 0 to 10 % mA 0 to 10 0 to 10 mA mA -55 to 125 °C -25 to 85 0 to 70 °C °C Electrical Characteristics Electrical Characteristics Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG1548 with -55°C ≤ TA ≤ 125°C, SG2548 with -25°C ≤ TA ≤ 85°C, SG3548 with 0°C ≤ TA ≤ 70°C, and +VIN = 15V. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature. Parameter Supply Section Supply Current (1) Reference Section Output Voltage Test Conditions SG1548/2548 Min Typ Max SG3548 Min Typ Max Units 4.8 4.8 10 mA 2.500 1 3 25 2.525 2.550 5 10 50 V V mV mV mA -0.4 -2.0 µA 2.625 3.500 2.375 1.500 ±0.6 100 2.704 3.606 2.447 1.545 ±2.0 V V V V µA dB +VIN = 40V TJ= 25°C Over Temperature +VIN = 4.5V to 35V IL = 0 to 10mA VREF = 0V Line Regulation Load Regulation Short Circuit Current Fault Window Generator Section Input Bias Current V PIN 1 = 1.5V to 2.45V DC Sense Inputs Section Overvoltage Threshold VPIN 1 = 0.95 x VREF V PIN 1 = 0.60 x VREF Undervoltage Threshold V PIN 1 = 0.95 x VREF V PIN 1 = 0.60 x VREF Input Bias Current V SENSE = 1.5V to 3.5V Threshold Supply Rejection +V IN = 4.5V to 35V Fault Delay Section Comparator Threshold Comparator Hysteresis Delay Charging Current VPIN 8 = 0V On Saturation Voltage I PIN 8 = 0mA OFF Clamp Voltage I PIN 8 = 0mA (2) Inverting Op Amp Section Input Offset Voltage Input Bias Current Output High Voltage ISOURCE = 5mA Output Low Voltage ISINK = 5mA Large Signal Voltage Gain RL = 10k Output Source Current Power Supply Rejection Ratio +VIN = 4.5V to 35V AC Line Sense Section Comparator Threshold V PIN 5 = Low to High Comparator Hysteresis Input Bias Current V PIN 5 = 2.5V Collector Leakage Current VCE = 40V Collector Saturation Voltage IC= 10mA Emitter Output Voltage IE = 10mA Diode Clamp Voltage I PIN 5 = 1mA I PIN 5 = -1mA Fault Logic Outputs (Each output) Collector Leakage Current VC = 40V Collector Saturation Voltage IC = 10mA Notes: 1. IL = 0mA 2. +VIN = 4.5V. 10 2.475 2.500 2.525 2.450 2.550 1 5 3 10 10 25 50 2.547 3.396 2.304 1.455 60 -0.4 -2.0 2.625 3.500 2.375 1.500 ±0.6 100 2.704 3.606 2.447 1.545 ±2.0 3.2 72 5 72 2.547 3.396 2.304 1.455 1.200 32.5 15 -1.0 3.2 1.9 25 2.440 2.500 2.560 25 1 2 1 10 0.2 0.5 12 13 6.0 7.5 -0.3 -1.0 1 0.2 10 60 1.200 1.250 1.300 25 32.5 50 67.5 0.1 0.2 +3.2 +3.6 2 -0.3 3.5 1.0 100 15 100 2.475 2.450 10 0.5 72 5 72 2.440 12 6.0 -0.3 1.250 1.300 25 50 67.5 0.1 0.2 +3.2 +3.6 V mV µA V V 2 -0.3 3.5 1.0 100 15 100 15 -1.0 mV µA V V dB mA dB 2.500 25 1 1 0.2 13 2.560 1.9 25 2 10 0.5 7.5 -1.0 1 0.2 10 0.5 V mV µA µA V V V V µA V 5 QUAD POWER FAULT MONITOR Application Information Setting the Fault Tolerance Window The fault tolerance window is set by applying a voltage less than the +2.50Vreference to the Lower Threshold input (Pin 1). The voltage is obtained by a resistor divider from the reference (Pin 3) to ground. If ±5% tolerance is desired, then 95% of the reference (+2.375V) is applied to Pin 1. If ±40% is wanted, then 60% of the reference (+1.50V) is applied. In the example on the back page, the tolerance is ±5%. The nominal overvoltage and undervoltage thresholds are centered about the reference at +2.625V and +2.375V (+2.500V ±0.125V). Scaling the Monitored Supply Voltages Each positive voltage to be monitored is divided down to +2.50V with a resistor network and connected to one of the Sense inputs. Unused Sense inputs should be connected to the reference. This will not increase the bias current. A variation of the monitored voltages out of the programmed tolerance range will cause the appropriate overvoltage or undervoltage fault output to switch LOW. The effective tolerance on any input may be broadened with an additional resistor to the voltage reference. The example on the back page shows a ±10% tolerance on the +5Vsupply although the SG1548 is programmed for a ±5% tolerance. The procedure for calculating the resistor value is found in the SG1548 Application Note. Monitoring a Negative Voltage A negative voltage can be converted to a positive one and simultaneously scaled to +2.50V by using the internal operational amplifier as an inverter. Only an input resistor and feedback resistor are required. Setting the Fault Delay A single capacitor at the Delay pin sets the time an out-of tolerance fault must persist before a fault is actually declared. This feature allows switching noise on the supplies to be rejected. The delay time is given by: Delay = 25ms/µF. AC Line Monitoring The AC line voltage can be monitored for single-cycle dropouts with the few components shown in the example. A half-wave rectifier charges the capacitor on positive line cycles. After the positive peak and during the negative line cycle the capacitor discharges from a fixed voltage controlled by the internal Zener diode. If a positive cycle is missing, the capacitor discharges to below the +2.5V trip point of the comparator, causing the output transistor to turn on. 6 Application Information Application Example In this example, the SG1548 simultaneously monitors four DC voltages: +5V, +24V, and ±15V. Three different fault tolerances are programmed: ±5% on the two 15V supplies, ±10% on the +5V supply, and ±20% on the +24V supply. The 5µF delay capacitor provides 125 milliseconds of fault delay. BIAS SUPPLY VREF 10.7 k 374 SG1548 +24 V ± 20% 11 SENSE 1 +VIN 4 12 SENSE 2 O.V.FAULT 9 OVERVOLTAGE 13 SENSE 3 U.V.FAULT 10 UNDERVOLTAGE 15 INV. IN VREF 3 1.24 k 1.24 k 619 +5 V ± 10% 1.24 k 6.24 k +15 V ± 5% 1.24 k 15 k -15 V ± 5% 124 Ω 2.49 k 16 INV. OUT L. THRESHOLD 1 2.37 k 14 SENSE 4 DELAY 8 5 µF 3.3 k 120 VAC 60 Hz 6 VRMS 180 k 5 LINE SENSE COLLECTOR 7 LINE FAULT 0.1 2 GROUND EMITTER 6 Figure 2 · Application Example 7 QUAD POWER FAULT MONITOR Package Outline Dimensions Controlling dimensions are in inches, metric equivalents are shown for general information. A b b2 MILLIMETERS MIN MAX 5.08 0.38 0.51 1.04 1.65 INCHES MAX 0.200 0.015 0.020 0.045 0.065 c D 0.20 19.30 0.008 0.760 E e 5.59 7.11 2.54 BSC 0.220 0.280 0.100 BSC eA H 7.37 0.63 7.87 1.78 0.290 0.025 0.310 0.070 L α 3.18 - 5.08 15° 0.125 - 0.200 15° Q 0.51 1.02 0.020 0.040 Dim D 16 9 1 8 E eA b2 Q A Seating Plane L c H α b e 0.38 19.94 MIN 0.015 0.785 * Note: Dimensions do not include protrusions; these shall not exceed 0.155mm (.006”) on any side. Lead dimension shall not include solder coverage. Figure 3 · J 16-Pin Ceramic Dip Dim MILLIMETERS MIN A A1 D A2 E1 1 b1 E MIN 5.33 0.38 MAX 0.210 0.015 3.30 Typ. 0.130 Typ. b 0.36 0.56 0.014 0.022 b1 1.14 1.78 0.045 0.070 c 0.20 0.36 0.008 0.014 D 18.67 19.69 0.735 0.775 e A2 MAX INCHES 2.54 BSC 0.100 BSC A c A1 L e SEATING PLANE b θ E 7.62 8.26 0.300 0.325 E1 6.10 7.11 0.240 0.280 L 2.92 0.381 0.115 0.150 θ - 15° - 15° Note: Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm (.006”) on any side. Lead dimension shall not include solder coverage. Figure 11 · N 16-Pin Plastic Dip 8 Package Outline Dimensions (continued) Package Outline Dimensions (continued) Controlling dimensions are in inches, metric equivalents are shown for general information. Dim D 16 9 E H 8 1 e B L A2 A SEATING PLANE c MILLIMETERS INCHES A MIN 2.06 MAX 2.65 MIN 0.081 MAX 0.104 A1 A2 0.10 2.03 0.30 2.55 0.004 0.080 0.012 0.100 B c 0.33 0.23 0.51 0.32 0.013 0.009 0.020 0.013 D E 10.08 7.40 10.50 7.60 0.397 0.291 0.413 0.299 e H 1.27 BSC 10.00 10.65 0.05 BSC 0.394 0.419 L Θ 0.40 0° 1.27 8° 0.016 0° 0.050 8° *LC − 0.10 − 0.004 Note: A1 1. Controlled dimensions are in mm, inches are for reference only. 2. Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm (.006”) on any side. Lead dimension shall not include solder coverage. Figure 12 · DW 16-Pin Plastic Wide-body SOIC E3 D Dim E A A1 INCHES MAX MIN MAX D/E 8.64 9.14 0.340 0.360 E3 - 8.128 - 0.320 e 1.270 BSC 0.050 BSC B1 0.635 TYP 0.025 TYP L 1.02 1.52 0.040 0.060 A 1.626 2.286 0.064 0.090 h L2 MILLIMETERS MIN 1.016 TYP 0.040 TYP L A1 8 3 1.372 1.68 A2 - L2 1.91 B3 0.054 0.066 1.168 - 0.046 2.41 0.075 0.95 0.203R 0.008R 1 Note: 13 h A2 18 B1 e B3 All exposed metalized area shall be gold plated 60 micro-inch minimum thickness over nickel plated unless otherwise specified in purchase order. Figure 13 · 20-Pin Ceramic Leadless Chip Carrier 9 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 © 2014 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. SG1548.1/12.14