IRF OM7764 Ultra low dropout, 3.0a adjustable positive linear regulator thru-hole (mo-078aa) Datasheet

PD - 94749A
Ultra Low Dropout, 3.0A
Adjustable Positive Linear Regulator
Thru-Hole (MO-078AA)
O M 7 764 AS C
5962 - 0323801MYA
Product Summary
Part Number
Output Voltage
Current
Dropout
OM7764ASC
1.21V to 20V
3.0A
0.4V
MO-078AA
Description
The OM7764ASC is a 3.0A, ultra low dropout,
adjustable linear regulator specifically designed for
low voltage, high current applications. Housed in a
hermetic package, the dropout of these devices is
400mV at full load. All protective features are
designed into the circuit including thermal shutdown,
current limiting and safe area control. These units are
ideally suited for military/defense, commercial aircraft,
industrial control and other harsh environments where
a hermetically sealed package is required.
Features:
n
n
n
n
Dropout Voltage of 400mV at Full Load
Wide Input Range: 2.7V to 20V
Low Noise: 40mVRMS ( 10Hz to 10KHz )
Fast Transient Response
n No Protection Diodes needed
n Hermetic MO-078AA Package ensures
High Reliability
Absolute Maximum Ratings
Parameter
Symbol
Value
Units
A
Output Currrent
IO
3.0
Input Voltage
VIN
+20
V
Power Dissipation @ Tc = 25°C
PD
20
W
RθJC
5.0
°C/W
TJ
-55 to +125
TSTG
TL
-65 to +150
Thermal Resistance, Junction to Case
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature Soldering (10second maximum)
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°C
300
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10/25/06
OM7764ASC
Electrical Characteristics @TA = 25°C (Unless Otherwise Specified)
Parameter
Test Conditions
c
Minimum Input voltage
ILOAD = 3.0A
Line Regulation
∆VIN = 2.21V to 20V, ILOAD = 1.0mA
Load Regulation
Adjust Pin Voltage
VIN = 2.7V, ILOAD =1.0mA to 3.0A
VIN = 2.7V, ILOAD =1.0mA to 3.0A
cd
cd
V
-
2.0
10
-
5.0
15
-
-
50
1.192
1.210
1.228
1.210
1.246
-
0.02
0.05
ILOAD = 1.0mA c
-
-
0.10
ILOAD = 100mA
-
0.07
0.13
c
-
-
0.18
c
-
0.14
0.20
-
-
0.27
c
-
0.25
0.33
-
-
0.40
ILOAD = 3.0A
-
0.4
0.54
ILOAD = 3.0A
-
-
0.66
ILOAD = 0mA
-
1.0
1.5
-
1.1
1.6
-
3.5
5.0
-
11
18
ILOAD = 500mA
ILOAD = 1.5mA
ILOAD = 1.5mA
Ripple Rejection
Units
2.7
1.168
ILOAD = 500mA
VIN = VOUT (Nominal)+1
Max.
2.3
2.7V < VIN < 20V, 1.0mA < ILOAD < 3.0A c
ILOAD = 100mA
Ground Pin Current
Typ.
-
VIN = 2.21V, ILOAD =1.0mA
ILOAD = 1.0mA
Dropout Voltage
Min.
c
c
ILOAD = 1.0mA c
ILOAD = 100mA c
ILOAD = 500mA c
ILOAD = 1.5A c
ILOAD = 3.0A c
VIN - VOUT = 1.5V(Average), VRIPPLE = 0.5 VP-P
mV
V
mA
-
40
75
55
120
65
200
-
dB
3.1
-
-
A
-
-
1.0
mA
-
300
600
µA
fRIPPLE = 120Hz, ILOAD = 1.5A, TJ = +25°C
Current Limit
Input Reverse Leakage
Current
VIN = 2.7V, ∆VOUT = -0.1V
VIN = -20V, VOUT = 0V
c
Reverse Output Current VOUT = 1.21V, VIN < 1.21V
c
c
Footnotes
 - Denotes specifications which apply over the full operating temperature range.
‚ - The OM7764ASC is tested and specified for these conditions with the ADJ pin connected to the OUT pin.
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OM7764ASC
Fig 1: Dropout Voltage Vs Temperature
Fig 3: Quiescent Current Vs Input Voltage
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Fig 2: Adjust Pin Voltage Vs Temperature
Fig 4: Ground Pin Current Vs Input Voltage
3
OM7764ASC
Fig 5: Current Limit Vs Temperature
OM7764A
VIN
IN
R2
SHDN
0.1uF
100uF
GND
VOUT
OUT
ADJ
0.1uF
220uF
R1
VOUT = 1.21V(1 + (R2/R1)) + IADJ(R2)
IADJ = 3.0uA @ 25°C
Fig 6: Typical Application
Layout Consideration
It is recommended that output capacitors be located as close as possible to the VOUT terminal of the
device to prevent any high frequency oscillation that may result due to excessive stray inductance.
Specfications for capacitors: 220µF (+25V) Tantalum, 100µF (+25V)Tantalum, 0.1µF (+50V) Ceramic
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OM7764ASC
Case Outline and Dimensions — MO-078AA
Pin Assignment
Pin #
Pin Description
1
SHUTDOWN
2
INPUT
3
GROUND
4
OUTPUT
5
ADJUST
NOTES:
1. - DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994.
2. - CONTROLLING DIMENSION: INCH.
3. - DIMENSIONS ARE SHOWN IN INCHES.
4. - TOLERANCES ARE ± 0.010 U.O.S.
5. - SEE INDIVIDUAL DATA SHEETS FOR PIN
ASSIGNMENTS.
Part Numbering Nomenclature
OM 7764A S
C
M
Screening
M = MIL-PRF-38535
Device Number
Package Code
S = MO-078AA
Isolated / Non-Isolated
S = Isolated
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WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105
IR LEOMINSTER: 205 Crawford St., Leominster, Massachusetts 01453, Tel: (978) 534-5776
Data and specifications subject to change without notice.10/2006
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