ETC OM8502SC

PD-94467A
Ultra Low Dropout
Linear Regulator
Hermetic Package
OM8502SC
OM8502SF
+5.6Vin to +5.0Vout at 3.0A
Product Summary
Part Number
OM8502SC
OM8502SF
Dropout
0.4 V
0.4 V
IO
3.0A
3.0A
Vin
5.6V
5.6V
Vout
5.0V
5.0V
Package
MO-078AA
8-lead Flatpack
MO-078AA
Features:
The OM8502 is an ultra low dropout linear regulator designed specifically for hi-rel applications. Housed in
either a 5 pin through hole or 8 lead surface mount package, these regulators provide high reliability in military/
defense applications. The ultra low dropout voltage of 0.4V
@ 3A makes the part particularly useful for applications
requiring low noise and higher efficiency.
n Ultra low dropout voltage of 0.4 volt
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 Available H-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
OM8502SC, OM8502SF
Electrical Characteristics @ TA= 25°C (Unless Otherwise Specified)
Parameter
Output Voltage
Input Voltage RangeOperating
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Ripple Rejection
Shutdown Source Current
Shutdown Pin Threshold
Output Voltage at Shutdown
Conditions
Vin= 5.6V, Io= 3.0A
Io= 3.0A
Symbol
Vout
Min.
4.95
5.4
5.45≤Vin ≤ 5.75, Io= 3.0A
5.1 ≤ Vin ≤ 6.0, Io= 50mA
Vin= 5.6V
10ma ≤ Io ≤ 3.0A
Io= 3.0A. Vout= 5.0V
Vin= 5.6V, Overcurrent
Latchup
F= 120 Hz., Vout= Vref
Vshdn= 5V
Isource= 200uA
Vin= 5.6V, Io= 50mA,
Shdn= +5.0V
Vline
Vload
-100
-5
-20
Vdrop
Ilatch
3.0
Typ.
5
Max
5.05
6.5
Unit
V
V
+100
+5
+20
mV
mV
mV
0.4
V
A
65
Ishdn
Vshdn
Vout
(shdn)
1.6
+0.1
dB
uA
V
V
Max
5.25
6.5
Unit
V
V
+150
+150
+150
mV
mV
mV
0.4
V
A
200
1.0
-0.1
Electrical Characteristics TA = -55 to +125°C
Parameter
Output Voltage
Input Voltage RangeOperating
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Ripple Rejection
Shutdown Source Current
Shutdown Pin Threshold
Output Voltage at Shutdown
Conditions
Vin= 5.6V, Io= 3.0A
Io= 3.0A
Symbol
Vout
Min.
4.75
5.4
5.45≤ Vin ≤ 5.75, Io= 3.0A
5.1 ≤ Vin ≤ 6.0, Io= 50mA
Vin= 5.6V
10ma ≤ Io ≤ 3.0A
Io= 3.0A. Vout= 5.0V
Vin=5.6V, Overcurrent
Latchup
F= 120 Hz., Vout= Vref
Vshdn= 5V
Isource= 200uA
Vin= 5.6V, Io= 50mA,
Shdn= +5.0V
Vline
Vload
-150
-150
-150
Vdrop
Ilatch
3.0
Typ.
5
65
Ishdn
Vshdn
Vout
(shdn)
200
1
-0.1
1.6
+0.1
B
uA
V
V
Simplified Schematic
Vin
Vout
Drive
Shutdown
Gnd
Ground
2
www.irf.com
OM8502SC, OM8502SF
OM8502 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)
Vin
Vout
Vout
Vin
OM8502
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
OM8502SC, OM8502SF
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
4
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
OM8502SC, OM8502SF
Part Number Nomenclature
OM
Omnirel
Part Number
OM8502SCP
OM8502SCH
OM8502SFP
OM8502SFH
8502
Device
X
X
S=Isolated
Package
N=Non-Isolated
Package Description
MO-078AA 5 - Lead
MO-078AA 5 - Lead
8 -Lead Flat Pack
8 -Lead Flat Pack
X
Screening
Screening
100% Final Electrical
Class H per MIL-PRF-38534
100% Final Electrical
Class H per MIL-PRF-38534
MIL-PRF-38534 Screening Requirements
TEST/INSPECTION
SCREENING LEVEL MIL-STD-883
Class H
Method
Pre Seal Burn-In
Nondestructive Bond Pull
Internal Visual
Temperature Cycle
Constant Acceleration
Mechanical Shock
PIND
Pre Burn-In Electrical
Burn-In
Final Electrical
Seal
Radiographic
External Visual
Optional
N/A
100%
100%
100%
100%
N/A
Optional
100%
100%
100%
N/A
100%
1030
2023
2017
1010
2001
2002
2020
1015
1014
2012
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