Test Report 032 1MeV Equivalent Neutron Testing of the HS-1825ARH Voltage Mode Pulse Width Modulator (PWM) Introduction TABLE 1. HS-1825ARH PIN ASSIGNMENTS (16-PIN FLATPACK) This report summarizes results of 1MeV equivalent neutron testing of the HS-1825ARH voltage mode Pulse Width Modulator (PWM). The test was conducted in order to determine the sensitivity of the part to Displacement Damage (DD) caused by neutron or proton environments. Neutron fluences ranged from 2x1012n/cm2 to 1x1014n/cm2. This project was carried out in collaboration with Boeing (El Segundo, CA), whose support is gratefully acknowledged. TERMINAL NUMBER TERMINAL SYMBOL TERMINAL NUMBER TERMINAL SYMBOL 1 INV 9 ILIM/SD 2 NON-INV 10 GND 3 E/A OUT 11 OUTPUT A 4 CLOCK 12 POWER GND 5 RT 13 VC Reference Documents 6 CT 14 OUTPUT B • MIL-STD-883 test method 1017 7 RAMP 15 VCC • HS-1825ARH Datasheet 8 SOFT-START 16 VREF 5.1V • DSCC Standard Microcircuit Drawing (SMD) 5962-99558 Part Description The radiation hardened HS-1825ARH and HS-1825AEH pulse width modulators are designed to be used in high frequency switched-mode power supplies and can be used in either current-mode or voltage-mode. They are well suited for single-ended boost converter applications. Device features include a precision voltage reference, low power start-up circuit, high frequency oscillator, wide-band error amplifier and a fast current-limit comparator. The HS-1825ARH and HS-1825AEH are fabricated in the Intersil Radiation Hardened Silicon Gate (RSG) dielectrically isolated BiCMOS process. Table 1 shows the pinout of the part. Detailed electrical specifications for these devices are contained in SMD 5962-99558. Specifications for radiation hardened QML devices are controlled by the Defense Logistics Agency Land and Maritime (DLA). The HS-1825ARH is acceptance tested on a wafer-by-wafer basis to a total dose level of 300krad(Si) at high dose rate (50-300rad(Si)/s). The IS-1845AEH is acceptance tested to 300krad(Si) at high dose rate (50-300rad(Si)/s) and to 50krad(Si) at low dose rate (< 0.01rad(Si)/s). Test Description Irradiation Facilities 1MeV equivalent neutron irradiation was performed by the Boeing team at the Survivability and Vulnerability Assessment Directorate, US Army, White Sands Missile Range fast burst reactor (White Sands Missile Range, NM 88002). Dosimetry data can be furnished upon request. Parts were tested in an unbiased configuration with all leads shorted together in general accordance with TM 1017 of MIL-STD-883. As neutron irradiation activates many of the heavier elements found in a packaged integrated circuit, the parts exposed at the higher neutron levels required considerable “cooldown” time before being shipped back to Intersil for electrical testing. Test Fixturing No formal irradiation test fixturing was involved. These DD tests are termed “bag tests” in the sense that the parts are irradiated in an inactive state with all leads shorted together. Characterization Equipment and Procedures Electrical testing was performed before and after irradiation using the Intersil Palm Bay, FL Automated Test Equipment (ATE). All electrical testing was performed at room temperature. Experimental Matrix The experimental matrix consisted of 5 samples irradiated at 2x1012n/cm2, 5 irradiated at 1x1013n/cm2, 5 irradiated at 3x1013n/cm2 and 5 irradiated at 1x1014n/cm2. Five control units were used. The HS-1825ARH samples were drawn from fabrication lot E0A4PDB and were packaged in the standard 16 Ld ceramic production package. Samples were screened to the SMD limits over temperature before the start of neutron testing. June 8, 2016 TR032.0 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2016. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. Test Report 032 Results Variables Data Neutron testing of the HS-1825ARH is complete and the results are reported in the balance of this report. It should be carefully realized when interpreting the data that each neutron irradiation was performed on a different five-unit sample; this is not total dose testing, where the damage is cumulative over a number of downpoints. Attributes Data TABLE 2. HS-1825ARH ATTRIBUTES DATA PART SAMPLE FLUENCE, PASS SIZE n/cm2 (Note 1) FAIL NOTES HS-1825ARH 5 2x1012 HS-1825ARH 5 1x1013 5 0 All passed HS-1825ARH 5 3x1013 0 5 All failed, start timing, ramp offset, charge current HS-1825ARH 5 1x1014 0 5 All failed, nonfunctional 5 0 All passed The plots in Figures 1 through 23 show data plots for key parameters before and after irradiation to each level. The reported parameters and their data sheet limits are shown in Table 3. As indicated in Table 2 all samples were nonfunctional after exposure to 1x1014n/cm2; for several of the figures, we elected to not plot the data at this level as it has little meaning (being nothing more than an ATE overrange) and makes the data at the other three levels more difficult to interpret. The plots show the population median of each parameter as a function of neutron irradiation as well as population maximum and minimum error bars. We chose to plot the median because of the small sample sizes (five per cell) involved. We also show the applicable post-total dose electrical limits as taken from the SMD; it should be carefully noted that these limits are provided for guidance only as the HS-1825ARH is not specified or guaranteed for the neutron environment. Intersil does not design, qualify or guarantee its parts for the DD environment, but has performed limited collaborative neutron testing for customer guidance. NOTE: 1. ‘Pass’ indicates a sample that passes all SMD limits. Variables Data Plots 5.25 REFERENCE OUTPUT VOLTAGE (V) 5.20 5.15 5.10 5.05 5.00 4.95 VREF 4.90 Spec limit Spec limit 4.85 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 1. HS-1825ARH reference output voltage as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limits are 5V to 5.2V. Submit Document Feedback 2 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 25 1E14 DATA NOT PLOTTED 20 15 LINE REGULATION (mV) 10 5 0 -5 -10 VLINE -15 Spec limit -20 Spec limit -25 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 2. HS-1825ARH reference section line regulation as a function of 1MeV equivalent neutron irradiation at 2x1012 n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data was an ATE overrange and is not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limits are -20mV to 20mV. 60 1E14 DATA NOT PLOTTED LOAD REGULATION (mV) 40 20 0 -20 -40 VLOAD Spec limit Spec limit -60 1E+11 PRE-RAD 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 3. HS-1825ARH reference section load regulation as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3 x 1013 n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data was an ATE overrange and is not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limits are -50mV to 50mV. Submit Document Feedback 3 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 80 SHORT- CIRCUIT CURRENT (mA) 60 40 20 ISC Spec limit 0 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 4. HS-1825ARH reference section output short-circuit current as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limit is 20mA minimum 500 1E14 DATA NOT PLOTTED INITIAL ACCURACY (kHz) 450 400 350 300 F0 250 Spec limit Spec limit 200 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 5. HS-1825ARH oscillator section initial accuracy as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data was an ATE overrange and is not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limits are 300kHz to 425kHz. Submit Document Feedback 4 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 5 4 CLOCK OUTPUT VOLTAGE (V) VCLKH VCLKL 3 Spec limit Spec limit 2 1 1E14 DATA NOT PLOTTED 0 -1 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 6. HS-1825ARH HIGH and LOW clock output voltage as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data were ATE overranges and are not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limits are 3.75V minimum (HIGH) and 0.2V maximum (LOW). 15 1E14 DATA NOT PLOTTED EA INPUT OFFSET VOLTAGE (mV) 10 5 0 -5 -10 VOS Spec limit Spec limit -15 1E+11 PRE-RAD 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 7. HS-1825ARH error amplifier input offset voltage as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data was an ATE overrange and is not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limits are -10mV to 10mV. Submit Document Feedback 5 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 1.5 IIB Spec limit EA INPUT BIAS CURRENT (µA) 1.0 1E14 DATA NOT PLOTTED Spec limit 0.5 0.0 -0.5 -1.0 -1.5 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 8. HS-1825ARH error amplifier input bias current as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data was an ATE overrange and is not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limits are -1µA to 1µA. 5 IOS 4 Spec limit Spec limit EA INPUT OFFSET CURRENT (µA) 3 2 1 0 -1 -2 -3 -4 -5 1E+11 PRE-RAD 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 9. HS-1825ARH error amplifier input offset current as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limits are -4µA to 4µA. Submit Document Feedback 6 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 160 1E14 DATA NOT PLOTTED 140 EA OPEN LOOP GAIN (dB) 120 100 80 60 40 20 AVOL Spec limit 0 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 10. HS-1825ARH error amplifier open loop gain as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data was an ATE overrange and is not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limit is 60dB minimum. 160 CMRR EA COMMON-MODE REJECTION RATIO (dB) 140 Spec limit 120 100 80 60 40 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 11. HS-1825ARH error amplifier common mode rejection ratio as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limit is 65dB minimum. Submit Document Feedback 7 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 140 1E14 DATA NOT PLOTTED EA POWER SUPPLY REJECTIONS RATIO (dB) PSRR Spec limit 120 100 80 60 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 12. HS-1825ARH error amplifier power supply rejection ratio as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data was an ATE overrange and is not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limit is 80dB minimum. 15 1E14 DATA NOT PLOTTED EA OUTPUT CURRENT (mA) 10 5 IOSK 0 IOSC Spec limit, IOSK Spec limit, IOSC -5 -10 -15 1E+11 PRE-RAD 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 13. HS-1825ARH error amplifier output current, sourcing and sinking, as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The 1x1014n/cm2 data points were ATE overranges and are not plotted. The post-total dose irradiation SMD limits are 1mA minimum (sinking) and -0.5mA minimum (sourcing). Submit Document Feedback 8 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 15 EA OUTPUT VOLTAGE (V) 10 5 VOH1 VOL1 Spec limit, VOH 0 Spec limit, VOL -5 -10 -15 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 14. HS-1825ARH error amplifier output voltage, HIGH and LOW, as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limits are 4V minimum (HIGH) and 1V maximum (LOW). 1 0 RAMP BIAS CURRENT (µA) -1 -2 -3 -4 -5 -6 -7 -8 IRAMP Spec limit -9 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 15. HS-1825ARH PWM ramp bias current as a function of 1MeV equivalent neutron irradiation at 2x1012 n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014 n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limit is -8µA minimum. Submit Document Feedback 9 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 120 DCMAX Spec limit MAXIMUM DUTY CYCLE (%) 100 80 60 40 20 0 1E+11 PRE-RAD 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 16. HS-1825ARH PWM maximum duty cycle as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limit is 40% minimum. 600 ICHG 1E14 DATA NOT PLOTTED IDCHG CHARGE AND DISCHARGE CURRENT (µA) 500 Spec limit, ICHG Spec limit, ICHG Spec limit, IDCHG 400 Spec limit, IDCHG 300 200 100 0 1E+11 PRE-RAD 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 17. HS-1825ARH soft-start charge and discharge current as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x 1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The 1x1014n/cm2 discharge current data was an ATE overrange and is not plotted. The post-total dose irradiation SMD limits are 8µA to 25µA (charging) and 100µA to 500µA (discharging). Submit Document Feedback 10 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 16 IBLIM 14 Spec limit ILIM BIAS CURRENT (µA) 12 10 8 6 4 2 0 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 18. HS-1825ARH current limit bias current as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limit is 15µA maximum. 1.2 VLIMIT Spec limit Spec limit 1E14 DATA NOT PLOTTED CURRENT LIMIT THRESHOLD (V) 1.1 1 0.9 0.8 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 19. HS-1825ARH current limit threshold as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data was an ATE overrange and is not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limits are 0.88V to 1.1V. Submit Document Feedback 11 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 2.5 VSATL1 VSATL2 Spec limit, VSATL1 OUTPUT LOW SATURATION VOLTAGE (V) Spec limit, VSATL2 2.0 1.5 1.0 0.5 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 20. HS-1825ARH output LOW saturation voltage, 20mA (VSATL1) and 200mA (VSATL2), as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limits are 0.8V maximum (20mA) and 2.2V maximum (200mA). 12 OUTPUT HIGH SATURATION VOLTAGE (V) 1E14 DATA NOT PLOTTED 11 10 9 VSATH1 VSATH2 Spec limit, VSATH1 Spec limit, VSATH2 8 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 21. HS-1825ARH output HIGH saturation voltage, 20mA (VSATH1) and 200mA (VSATH2), as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The 1x1014n/cm2 data points were ATE overranges and are not plotted. The sample size for each cell was 5. The post-total dose irradiation SMD limits are 10V minimum (20mA) and 9V minimum (200mA). Submit Document Feedback 12 TR032.0 June 8, 2016 Test Report 032 Variables Data Plots (Continued) 350 ISU 300 Spec limit START-UP CURRENT (µA) 250 200 150 100 50 0 PRE-RAD 1E+11 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 22. HS-1825ARH start-up current as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013 n/cm2, 3x1013n/cm2 and 1x1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limit is 300µA maximum. 40 35 SUPPLY CURRENT (mA) 30 25 20 15 10 5 ICC Spec limit 0 1E+11 PRE-RAD 1E+12 1E+13 1E+14 NEUTRON LEVEL (n/cm2) FIGURE 23. HS-1825ARH supply current as a function of 1MeV equivalent neutron irradiation at 2x1012n/cm2, 1x1013n/cm2, 3x1013n/cm2 and 1 x 1014n/cm2. The plot shows the population median and minimum and maximum error bars at each downpoint. The sample size for each cell was 5. The post-total dose irradiation SMD limit is 36mA maximum. Submit Document Feedback 13 TR032.0 June 8, 2016 Test Report 032 Conclusion Appendices This report summarizes results of the 1MeV equivalent neutron testing of the HS-1825ARH Pulse Width Modulator (PWM). The test was conducted in order to determine the sensitivity of the part to Displacement Damage (DD) caused by neutron or proton environments in space. Neutron fluences ranged from 2x1012n/cm2 to 1x1014n/cm2. This test was carried out as part of a collaborative project with Boeing (El Segundo, CA), whose support is gratefully acknowledged. Reported Parameters Reported parameters are shown in Table 3. The limits are taken from the applicable SMD and are provided for guidance only as the part is not designed or guaranteed for the neutron environment. The plots show the population median and minimum and maximum error bars at each downpoint. The samples met all specifications (Bin 1) after 2x1011n/cm2 and 1x1013n/cm2. The samples showed parametric degradation after 3x1013n/cm2 and were nonfunctional after the 1x1014n/cm2 irradiation. TABLE 3. REPORTED PARAMETERS FIGURE PARAMETER LIMIT, LOW LIMIT, HIGH UNITS NOTES 1 Reference Output Voltage 5 5.2 V 2 Reference Line Regulation -20 20 mV 3 Reference Load Regulation -50 50 mV 4 Reference Output SC Current 20 - mA 5 Oscillator Initial Accuracy 300 425 kHz 6 Clock Output Voltage 3.75 - V HIGH Clock Output Voltage - 0.2 V LOW 7 EA Input Offset Voltage -10 10 mV 8 EA Input Bias Current -1 1 µA 9 EA Input Offset Current -4 4 µA 10 EA Open Loop Gain 60 - dB 11 EA Common-Mode Rejection Ratio 65 - dB 12 EA Power Supply Rejection Ratio 80 - dB 13 EA Output Current -0.5 - mA Sourcing EA output current 1 - mA Sinking EA Output Voltage 4 - V HIGH EA Output Voltage - 1 V LOW 15 PWM Ramp Bias Current -8 - µA 16 PWM Maximum Duty Cycle 40 - % 17 Soft-Start Current 8 25 µA Charging Soft-Start Current 100 500 µA Discharging - 15 µA 0.88 1.1 V 14 18 Current Limit Bias Current 19 Current Limit Threshold 20 Output Saturation Voltage - 0.8 V LOW, 20mA Output Saturation Voltage - 2.2 V LOW, 200mA Submit Document Feedback 14 TR032.0 June 8, 2016 Test Report 032 TABLE 3. REPORTED PARAMETERS (Continued) FIGURE 21 PARAMETER LIMIT, LOW LIMIT, HIGH UNITS NOTES Output Saturation Voltage 10 - V HIGH, 20mA Output Saturation Voltage 9 - V HIGH, 200mA 22 Start-Up Current - 300 µA 23 Supply Current - 36 mA Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the document is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com Submit Document Feedback 15 TR032.0 June 8, 2016