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PD-94482A
1 M Rad(Si) Ultra Low Dropout Linear Regulator Hermetic Package
OMR9608SC OMR9608SF + 5.0Vin to +3.3Vout at 3.0A
Product Summary
Part Number OMR9608SC OMR9608SF Vin 5.0 V 5.0 V Vout 3.3V 3.3V IO 3.0A 3.0A Package MO-078AA 8-Lead Flatpack
MO-078AA
Features:
The OMR9608 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 0.4 volts sig-
nificantly 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
Io V in PTOT RTHJC RTHJC TJ TSTG TL
Parameter
Output Current Input Voltage Power Dissipation TC=25 o C Thermal Resistance, Junction to Case-MO-078AA Thermal Resistance, Junction to Case-8 lead flatpack Operating Junction Storage Temperature Range Lead Temperature
Value
3.5 +7.0 19 6.5 6.5 -55 to +125 -65 to +150 300
Units
A V W
C/W C/W
oC oC oC
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8/20/02
OMR9608SC, OMR9608SF
Electrical Characteristics @ TA= 25C (Unless Otherwise Specified)
Parameter Output Voltage Input Voltage RangeOperating Line Regulation Conditions Vin= 5.0V, Io= 3.0A Io= 3.0A Symbol Min. Vout 3.267 4.5 -100 -5 -20 Typ. 3.3 Max 3.333 5.5 100 5 20 0.4 3.0 65 200 1.0 -0.1 1.6 0.1 Unit V V mV mV mV V A dB uA V V
4.75 Vin 5.25, Io= Vline 4.5 Vin 5.5, Io= 50mA Load Regulation Vin= 5.0V Vload 10ma Iout 3.0A Dropout Voltage Vdrop Current Limit Vin= 5.0V, Overcurrent Ilatch Latchup Ripple Rejection F= 120 Hz., Vout= Vref Shutdown Source Current Vshdn= 5V Ishdn Shutdown Pin Threshold Isource= 200uA Vshdn Output Voltage at Shutdown Vin= 5.0, Io= 50mA, Vout Shdn= +5.0V (shdn)
Electrical Characteristics TA = -55 to +125C
Parameter Output Voltage Input Voltage RangeOperating Line Regulation Conditions Vin= 5.0V, Io= 3.0A Io= 3.0A Symbol Min. Vout 3.135 4.5 -150 -150 -150 Typ. 3.3 Max 3.465 6.5 +150 +150 +150 0.4 3.0 65 200 1.0 -0.1 1.6 0.1 Unit V V mV mV mV V A dB uA V V
4.75 Vin 5.25, Io= Vline 4.5 Vin 5.5, Io= 50mA Load Regulation Vin= 5.0V3V Vload 10ma Iout 3.0A Dropout Voltage Vdrop Current Limit Vin= 5.0V, Overcurrent Ilatch Latchup Ripple Rejection F= 120 Hz., Vout= Vref Shutdown Source Current Vshdn= 5V Ishdn Shutdown Pin Threshold Isource= 200uA Vshdn Output Voltage at Shutdown Vin= 5.0V, Io= 50mA, Vout Shdn= +5.0V (shdn)
Simplified Schematic
Vin Vout
Drive
Shutdown
Gnd
Ground
2
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OMR9608SC, OMR9608SF
OMR9608 Ripple Rejection vs. Frequency 3A
120 100 80 (db) 60 40 20 0 100
1.5A .75A .50A
1,000
10,000 Frequency (Hz)
100,000
1,000,000
Vin
Vin Vout
Vout
OMR9608
100uF 16V Tantalum SHDN GND 1.0uF Ceramic X7R 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.
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.
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OMR9608SC, OMR9608SF
Mechanical Outline MO-078AA
Base: GLIDCOP Pins: Copper core, Alloy 52 Seals: Glass Pin Connections Terminal Description 1 Vin 2 GND 3 Vout 4 Shutdown 5 No Connection
Base
12345
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
0.755 0.745 8X 0.080 0.070
8765
0.755 0.745
1234
8x 0.105 0.225 0.305 0.295 0.095 0.180 0.165 0.110 0.150
0.040 0.065 0.040 0.065 8X 0.020 0.016
4
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OMR9608SC, OMR9608SF
Part Number Nomenclature OM
Omnirel
R
9608
X
X
X
Screening
Radiation Device Hardened/Tolerant
S=Isolated Package N=Non-Isolated
Part Number OMR9608SCP OMR9608SCK OMR9608SFP OMR9608SFK
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
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
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