PD-94484A 200 Krad(Si) Ultra Low Dropout Linear Regulator Hermetic Package OMR9801SC OMR9801SF + 3.3Vin to +2.5Vout at 3.0A Product Summary Part Number OMR9801SC OMR9801SF 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 OMR9801 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 200 Krad (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 200 Krad(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 Io V in Output Current Input Voltage PTOT 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 RTHJC RTHJC TJ TSTG TL www.irf.com Lead Temperature °C/W 1 8/20/02 OMR9801SC, OMR9801SF 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 -0.1 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 -0.1 1.6 +0.1 dB uA V V Simplified Schematic Vin Vout Drive Shutdown Gnd Ground 2 www.irf.com OMR9801SC, OMR9801SF OMR9801 Ripple Rejection vs. Frequency (db) 3A 120 1.5A 100 .75A 80 .50A 60 40 20 0 100 1,000 10,000 100,000 1,000,000 Frequency (Hz) Vin Vout Vout Vin OMR9801 100uF 16V Tantalum SHDN 1.0uF Ceramic GND 220uF 6.3V Tantalum X7R 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. www.irf.com 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. 3 OMR9801SC, OMR9801SF 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. Pin Connections Terminal Description 1,2 GND 3 Shutdown 4 No Connection 5,6 Vout 7,8 Vin 4 0.755 0.745 8X 0.080 0.070 8 7 6 5 0.755 0.745 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 www.irf.com OMR9801SC, OMR9801SF Part Number Nomenclature OM R Omnirel 9801 Radiation Device Hardened/Tolerant Part Number OMR9801SCP OMR9801SCH OMR9801SCK OMR9801SFP OMR9801SFH OMR9801SFK X X S=Isolated Package N=Non-Isolated Package Description MO-078AA 5 - Lead MO-078AA 5 - Lead MO-078AA 5 - Lead 8 -Lead Flat Pack 8 -Lead Flat Pack 8 -Lead Flat Pack X Screening Screening 100% Final Electrical Class H per MIL-PRF-38534 Class K per MIL-PRF-38534 100% Final Electrical Class H per MIL-PRF-38534 Class K per MIL-PRF-38534 MIL-PRF-38534 Screening Requirements TEST/INSPECTION SCREENING LEVEL MIL-STD-883 Class H Class K Method (Space Level) Pre Seal Burn-In Optional Optional 1030 Nondestructive Bond Pull N/A 100% 2023 Internal Visual 100% 100% 2017 Temperature Cycle 100% 100% 1010 Constant Acceleration 100% 100% 2001 Mechanical Shock 100% 100% 2002 PIND N/A 100% 2020 Pre Burn-In Electrical Optional 100% Burn-In 100% 100% 1015 Final Electrical 100% 100% Seal 100% 100% 1014 Radiographic N/A 100% 2012 External Visual 100% 100% 2009 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. 8/2002 www.irf.com 5