PD-94475A 1 M Rad(Si) Ultra Low Dropout Linear Regulator Hermetic Package OMR9601SC OMR9601SF + 3.3Vin to +2.5Vout at 3.0A Product Summary Part Number OMR9601SC OMR9601SF Dropout 0.4 V 0.4 V IO 3.0A 3.0A Vin 3.3V 3.3V Vout 2.5V 2.5V Package MO-078AA 8-pin Flatpack MO-078AA Features: The OMR9601 is a radiation hardened, ultra low dropout linear regulator designed specifically for space applications. This product has been characterized to a total ionizing dose of 1 M Rad (Si) per MIL-STD-883, Method 1019, Condition A at both high and low dose rates under biased and unbiased conditions to account for ELDRS effects in bipolar devices. The ultra low dropout voltage of 0.4V @ 3A makes the part particularly useful for applications requiring low noise and higher efficiency. n Total dose and low dose capabilitiy to 1M Rad(Si) allows use in space applications n Ultra low dropout voltage of 0.4V@ 3A out significantly reduces power consumption n Low noise, higher efficiency n Remote shutdown permits power sequencing to be easily implemented n Hermetic MO-078AA (TO-258AA) and 8- lead flat pack ensure higher reliability n K-level screened Absolute Maximum Ratings Symbol Parameter Value Units 3.5 +7.0 A V Power Dissipation TC=25 o C 19 W Thermal Resistance, Junction to Case (MO-078AA) Thermal Resistance, Junction to Case (8-lead flatpack) 6.5 6.5 °C/W Operating Junction -55 to +125 oC Storage Temperature Range -65 to +150 oC 300 oC Io V in Output Current Input Voltage PTOT RTHJC RTHJC TJ TSTG TL www.irf.com Lead Temperature °C/W 1 6/5/02 OMR9601SC, OMR9601SF Electrical Characteristics @ TA= 25°C (Unless Otherwise Specified) Parameter Output Voltage Input Voltage RangeLine Regulation Conditions Vin= 3.3V, Io= 3.0A Io= 3.0A 3.13 ≤ Vin ≤ 3.46, Io= 3.0A 2.9 ≤ Vin ≤ 3.8, Io= 50mA Load Regulation Vin= 3.3V 50ma ≤ Iout ≤ 3.0A Dropout Voltage Io= 3.0A. Vout= 2.5V Current Limit Vin= 3.3V, Overcurrent Latch Up Ripple Rejection F= 120 Hz., Iout = 50mA Shutdown Source Current Vshdn= 5V Shutdown Pin Threshold Isource= 200uA Output Voltage at Shutdown Vin= 3.3V, Io= 50mA, Shdn= +5.0V Symbol Vout Vload Min. 2.475 2.9 -100 -5 -20 Vdrop Ilatch 3.0 Vline Typ. 2.5 Max 2.525 6.5 +100 +5 +20 Unit V V mV mV mV 0.4 V A 65 Ishdn Vshdn Vout (shdn) 1.6 +0.1 dB uA V V Max 2.625 6.5 Unit V V 200 1.0 -0.1 Electrical Characteristics TA = -55 to +125°C Parameter Output Voltage Input Voltage RangeOperating Line Regulation Conditions Vin= 3.3V, Io= 3.0A Io= 3.0A 3.13 ≤ Vin ≤ 3.46, Io= 3.0A 2.9 ≤ Vin ≤ 3.8, Io= 50mA Load Regulation Vin= 3.3V 50ma ≤ Iout ≤ 3.0A Dropout Voltage Io= 3.0A. Vout= 2.5V Current Limit Vin= 3.3V, Overcurrent Latch Up Ripple Rejection F= 120 Hz., Iout = 50mA Shutdown Source Current Vshdn= 5V Shutdown Pin Threshold Isource= 200uA Output Voltage at Shutdown Vin= 3.3V, Io= 50mA, Shdn= +5.0V Symbol Vout Min. 2.375 2.9 Typ. 2.5 Vline -150 +150 mV Vload -150 -150 +150 +150 mV mV Vdrop Ilatch 0.4 3.0 V A 65 Ishdn Vshdn Vout (shdn) 200 1.0 -0.1 1.6 +0.1 dB uA V V Simplified Schematic Vin Vout Drive Shutdown Gnd Ground 2 www.irf.com OMR9601SC, OMR9601SF Post Radiation Characteristics High Dose Rate Characteristics (90 Rads(Si)/sec) Typical Voltage Output 2.680 High Dose Rate 90 rad(Si)/sec (Post 1000hr Life Test) 2.640 Vout (V) 2.600 High Dose Rate 90 rad(Si)/sec (Pre 1000 hr Life Test) 2.560 2.520 2.480 2.440 Conditions: Vin = 3.3vdc Iload = 10 ma 2.400 1 10 100 1000 Total Dose Level (krads) Typical Bias Current 0.00 Conditions: Vin = 3.3Vdc Iload = 10 ma -0.10 -0.20 -0.30 High Dose Rate 90 rad(Si)/sec (Pre 1000 hr Life Test) Ibias (ma) -0.40 -0.50 -0.60 -0.70 High Dose Rate 90 rad(Si)/sec (Post 1000hr Life Test) -0.80 -0.90 -1.00 1 10 100 1000 Total Dose Level (krads) www.irf.com 3 OMR9601SC, OMR9601SF Post Radiation Characteristics High Dose Rate Characteristics (90 Rads(Si)/sec) Typical Load Regulation 100.00 Conditions: 3.135vdc - 3.465vdc Iload = 3.0A 80.00 60.00 Load Reg (mv) 40.00 20.00 High Dose Rate 90 rad(Si)/sec (Post 1000hr Life Test) 0.00 -20.00 -40.00 High Dose Rate 90 rad(Si)/sec (Pre 1000 hr Life Test) -60.00 -80.00 -100.00 1 10 100 1000 Total Dose Level (krads) Typical Line Regulation High Dose Rate 90 rad(Si)/sec (Post 1000hr Life Test) 100.00 80.00 60.00 Line Reg (mv) 40.00 High Dose Rate 90 rad(Si)/sec (Pre 1000 hr Life Test) 20.00 0.00 -20.00 -40.00 -60.00 Conditions: 3.135vdc - 3.465vdc Iload = 3.0A -80.00 -100.00 1 10 100 1000 Total Dose Level (krads) 4 www.irf.com OMR9601SC, OMR9601SF Post Radiation Characteristics High Dose Rate Characteristics (90 Rads(Si)/sec) Typical Voltage Output 2.600 Vout (V) 2.550 Low Dose Rate 0.1 rad(Si)/sec 2.500 2.450 Conditions: Vin = 3.3vdc Iload = 10 ma 2.400 1 10 100 1000 Total Dose Level (krads) OMR9601 Ripple Rejection vs. Frequency 3A 120 1.5A 100 .75A .50A (db) 80 60 40 20 0 100 1,000 10,000 100,000 1,000,000 Frequency (Hz) www.irf.com 5 OMR9601SC, OMR9601SF Application Schematic Vin Vout Vout Vin OMR9601 100uF 16V Tantalum SHDN 1.0uF Ceramic X7R GND 220uF 6.3V Tantalum Ground In order to maintain regulation and stability specified additional input and output bulk capacitors are recommended. Capacitors recommended above should be low ESR tantalums with tolerances of +/20% max. Internal to the product are a 4.7uF input capacitor and a 4.7uF output capacitor in parallel with a 0.33uF ceramic capacitor. Part Number OMR9601SCP OMR9601SCK OMR9601SFP OMR9601SFK Shutdown: The regulator can be shutdown by applying a voltage >1.6V to pin 4. The regulator will restart when the SHDN pin is pulled below the shutdown threshold of 1.0V. If remote shutdown is not required, pin 4 shold be connected to GND to insure a safe “off” state. Package Description MO-078AA 5 - Lead MO-078AA 5 - Lead 8 -Lead Flat Pack 8 -Lead Flat Pack Screening 100% Final Electrical Class K per MIL-PRF-38534 100% Final Electrical Class K per MIL-PRF-38534 MIL-PRF-38534 Screening Requirements TEST/INSPECTION SCREENING LEVEL MIL-STD-883 Class K Method (Space Level) Pre Seal Burn-In Optional 1030 Nondestructive Bond Pull 100% 2023 Internal Visual 100% 2017 Temperature Cycle 100% 1010 Constant Acceleration 100% 2001 Mechanical Shock 100% 2002 PIND 100% 2020 Pre Burn-In Electrical 100% Burn-In 100% 1015 Final Electrical 100% Seal 100% 1014 Radiographic 100% 2012 External Visual 100% 2009 6 www.irf.com OMR9601SC, OMR9601SF Mechanical Outline MO-078AA Base: GLIDCOP Pins: Copper core, Alloy 52 Seals: Glass Base Pin Connections Terminal Description 1 Vin 2 GND 3 Vout 4 Shutdown 5 No Connection 1 2 3 4 5 Mechanical Outline 8-Lead Flat Pack Base: 1010-1018 C.R.S. Pins: #52 Alloy, Copper Cored Seals: Glass – 9013 or Equiv. Finish: 100-250 Microinches Electroless Nickel Over 50-250 Microinches Electrolytic Nickel. 0.755 0.745 8X 0.080 0.070 8 7 6 5 0.755 0.745 Pin Connections Terminal Description 1,2 GND 3 Shutdown 4 No Connection 5,6 Vout 7,8 Vin 1 2 3 4 8x 0.040 0.065 0.110 0.150 0.040 0.065 0.105 0.225 0.305 0.295 0.095 0.180 0.165 8X 0.020 0.016 Part Number Nomenclature OM Omnirel R 9601 Radiation Device Hardened/Tolerant X X S=Isolated Package N=Non-Isolated X Screening WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 2527105 IR LEOMINSTER: 205 Crawford St., Leominster, Massachusetts 01453, Tel: (978) 5345776 Data and specifications subject to change without notice. 6/2002 www.irf.com 7