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Features
nLow Dropout Voltage and Ground Currents
nHigh Current Capability
nBuilt-in Thermal Overload Protection
nShort Circuit Current Limiting
nOutput Voltage Tolerance Guaranteed to ± 1%
nHermetic SMD-1 Package Ensures High Reliability
nOutput Current 2.6A
nThis part is also available in
TO-204AA Package as OM7671NK
TO-257AA Package as OM7671ST(Isolated)
3-Pin Surface Mount (SMD-3) Package as OM7671SM
07/27/07
Description
Low Dropout Positive Voltage Regulator
OM7671NM
3.3V, 2.6A
This series of +3.3V voltage regulators are high current,
high accuracy, low dropout regulators and are well
suited for systems where low dropout voltages are
critical. These devices feature protection against
overtemperature, overcurrent, reverse polarity
conditions and voltage spikes. The SMD-1 hermetic
package meets the demand for military/defense
environments.
SMD-1
P
ro
d
uc
t S
ummary
Part Number Output Voltage Output Current Package
OM7671NM 3.3V 2.6A SMD-1
Absolute Maximum Ratings @ TC =25°C
Parameter Symbol Value Units
Output Current IO2.6 A
Input Voltage VIN 30 V
Power Dissipation PD26 W
Thermal Resistance, Junction to Case RθJC 4.2 °C/W
Operating Junction Temperature Range TJ -55 to +125
Storage Temperature Range TSTG -65 to +150 °C
Pckg. Mounting Surface Temperature TP 300 (for 5s)
PD - 97293
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OM7671NM
1. Line and load regulation are measured at a constant junction temperature using a low duty cycle pulse technique.
Although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of
26W. Power dissipation is determined by the input/output differential voltage and output current. Guaranteed
maximum power dissipation will not be available over the full input/output voltage range.
2. Guaranteed by design, characterization or correlation to other tested parameters.
3. Specifications apply over the operating temperature range.
Notes
Electrical Characteristics -55°C
d
TA
d
125°C (Unless Otherwise Specified)
Parameter Symbol Test Conditions Min. Max. Units
VIN = 5.0V, IOUT = 10mA, TA = 25°C 3.267 3.333
4.75V ≤ VIN ≤ 18V, 10mA ≤ IOUT ≤ ILMIN
e
3.235 3.365
Line Regulation
c
U
VOUT /
U
VIN 4.5V
d
VIN
d
18V, IOUT = 0 A
e
-12
VIN = 5.0V, 0A
d
IOUT
d
ILMIN, TA = 25°C -15
VIN = 5.0V, 0A
d
IOUT
d
ILMIN
e
-25
Dropout Voltage VDROP IOUT = ILMIN,
U
VREF = 1%
e
-1.5V
Thermal Regulation - Pulse Width = 30ms, TA = +25°C - 0.04 %/W
f = 120Hz, CAdj = 25
P
F,
COUT = 25
P
F (tantalum), IOUT = ILMIN
e
VIN = 6.3V
Quiescent Current IQVIN = 18V
e
-10mA
VIN = 8.3V
e
2.6 -
VIN =28V
e
0.050 -
Temperature Stability
d
U
VOUT /
U
T -55°C ≤ TJ ≤ +125°C -1.55
Long Term Stability
d
U
VOUT /
U
TT
A = +125°C, t = 1000hrs - 1.0
VOutput Voltage VOUT
U
VOUT /
U
IOUT
mV
Load Regulation
c
%
ACurrent Limit IL
dBRipple Rejection
U
VIN /
U
VOUT 60 -
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OM7671NM
Fig 1: Typical Minimum Output
Differential Vs Output Current
Fig 2: Typical Short Circuit Current
Vs Input/Output Differential
Fig 3: Typical Output Voltage
Deviation Vs Temperature
Dropout Voltage
Short Circuit Current Load Regulation
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OM7671NM
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
IR LEOMINSTER : 205 Crawford St., Leominster, Massachusetts 01453, USA Tel: (978) 534-5776
Data and specifications subject to change without notice. 07/2007
Part Numbering Nomenclature
Case Outline and Dimensions - SMD-1
PAD ASSIGNMENTS
Pin 1 - Vout
Pin 2 - Ground
Pin 3 - Vin
OM 7671 N M
Device Number
Isolated / Non-Isolated
N = Non-Isolated
Package Code
M = SMD-1
