Absolute Maximum Ratings
Symbol Parameter Value Units
IoOutput Current 3.5 A
Vin Input Voltage +7.0 V
PTOT Power Dissipation TC=25 o C19 W
RTHJC Thermal Resistance, Junction to Case (MO-078AA) 6.5 °C/W
RTHJC Thermal Resistance, Junction to Case (8 lead flatpack) 6.5 °CW
TJOperating Junction -55 to +125 oC
TSTG Storage Temperature Range -65 to +150 oC
TLLead Temperature 300 oC
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Product Summary
Part Number Dropout IO Vin Vout Package
OMR9602SC 0.4 V 3.0A 5.6V 5.0V MO-078AA
OMR9602SF 0.4 V 3.0A 5.6V 5.0V 8-Lead Flatpack
Features:
nTotal dose and low dose capabilitiy to 1M
Rad(Si) allows use in space applications
nUltra low dropout of 0.4 volt significantly
reduces power consumption
nLow noise, higher efficiency
nRemote shutdown permits power
sequencing to be easily implemented
nHermetic MO-078AA (TO-258AA) and 8-
lead flat pack ensure higher reliability
nK-level screened
The OMR9602 is a radiation hardened, ultra low dropout
linear regulator designed specifically for space applica-
tions. This product has been characterized to a total ioniz-
ing 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 re-
quiring low noise and higher efficiency.
MO-078AA
PD-94476A
8/20/02
1 M Rad(Si) Ultra Low Dropout
OMR9602SC
Linear Regulator
OMR9602SF
Hermetic Package + 5.6Vin to +5.0Vout at 3.0A
2www.irf.com
OMR9602SC, OMR9602SF
Electrical Characteristics @ TA= 25°C (Unless Otherwise Specified)
Electrical Characteristics TA = -55 to +125°C
Shutdown
Vin Vout
Ground
Drive
Gnd
Parameter Conditions Symbol Min. Typ. Max Unit
Output Voltage Vin= 5.6V, Io= 3.0A Vout 4.95 55.05 V
Input Voltage Range-
Operating Io= 3.0A 5.4 6.5 V
5.45≤Vin ≤ 5.75, Io= 3.0A -100 100 mV
5.1 ≤ Vin ≤ 6.0, Io= 50mA -5 5mV
Vin= 5.6V
10ma ≤ Io ≤ 3.0A
Dropout Voltage Io= 3.0A. Vout= 5.0V Vdrop 0.4 V
Current Limit Vin= 5.6V, Overcurrent
Latchup Ilatch 3.0 A
Ripple Rejection F= 120 Hz., Vout= Vref 65 dB
Shutdown source current Vshdn= 5V Ishdn 200 uA
Shutdown Pin Threshold
Isource= 200uA
Vshdn
1.0
1.6
V
Vin= 5.6V, Io= 50mA,
Shdn= +5.0V
Line Regulation Vline
Load Regulation Vload -20 20 mV
Output Voltage at Shutdown Vout
(shdn) -0.1 +0.1 V
Parameter
Conditions
Min.
Typ.
Max
Unit
Output Voltage Vin= 5.6V, Io= 3.0A Vout 4.75 55.25 V
Input Voltage Range-
Operating
Io= 3.0A 5.4 6.5 V
5.45
≤
Vin
≤
5.75, Io= 3.0A
-150
+150
mV
5.1 ≤ Vin ≤ 6.0, Io= 50mA -150 +150 mV
Vin= 5.6V
10ma
≤
Io
≤
3.0A
Dropout Voltage
Io= 3.0A. Vout= 5.0V
Vdrop
0.4
V
Current Limit Vin=5.6V, Overcurrent
Latchup Ilatch 3.0 A
Ripple Rejection
F= 120 Hz., Vout= Vref
65
dB
Shutdown source current
Vshdn= 5V
Ishdn
200
uA
Shutdown Pin Threshold Isource= 200uA Vshdn 1.0 1.6 V
Vin= 5.6V, Io= 50mA,
Shdn= +5.0V
+150 mV
Output Voltage at Shutdown Vout
(shdn)
-0.1 +0.1 V
Line Regulation Vline
Load Regulation Vload -150
Simplified Schematic
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OMR9602SC, OMR9602SF
OMR9602 Ripple Rejection vs. Frequency
0
20
40
60
80
100
120
100 1,000 10,000 100,000 1,000,000
Frequency (Hz)
(db)
3A
1.5A
.75A
.50A
OMR9602
Vout
Vin
SHDN GND
100uF 16V
Tantalum 1.0uF
Ceramic
X7R
220uF 6.3V
Tantalum
Vin Vout
Ground
In order to maintain regulation and stability specified
additional input and output bulk capacitors are rec-
ommended. 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 ap-
plying a voltage >1.6V to pin 4. The regulator will
restart when the SHDN pin is pulled below the shut-
down threshold of 1.0V. If remote shutdown is not
required, pin 4 shold be connected to GND to insure
a safe “off” state.
4www.irf.com
OMR9602SC, OMR9602SF
1 2 3 4 5
Base
Base: GLIDCOP
Pins: Copper core, Alloy 52
Seals: Glass
Pin Connections
Terminal Description
1Vin
2GND
3Vout
4Shutdown
5No Connection
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
Mechanical Outline MO-078AA
Mechanical Outline 8-Lead Flat Pack
0.755
0.745
0.755
0.745
0.225 0.305
0.295
0.105
0.095 0.020
0.016
0.180
0.165 8X
0.040
0.065
0.040
0.065
8X 0.080
0.070
8x 0.110
0.150
1 2 3 4
8 7 6 5
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OMR9602SC, OMR9602SF
Part Number Nomenclature
OM R 9602 X X X
Omnirel Radiation Device S=Isolated Package Screening
Hardened/Tolerant N=Non-Isolated
Part Number Package Description Screening
OMR9602SCP MO-078AA 5 - Lead 100% Final Electrical
OMR9602SCK MO-078AA 5 - Lead Class K per MIL-PRF-38534
OMR9602SFP 8 -Lead Flat Pack 100% Final Electrical
OMR9602SFK 8 -Lead Flat Pack Class K per MIL-PRF-38534
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
MIL-PRF-38534 Screening Requirements
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