OM1324SMM OM1324NMM
OM1324NKM OM1324NTM
OM1324STM
OM1324N2M
1.5 AMP POSITIVE ADJUSTABLE VOLTAGE
REGULATOR APPROVED TO DESC DRAWING 7703405
Three Terminal, Precision Adjustable
Positive Voltage Regulator In Hermetic
Style Packages (LM117A)
Please see mechanical
outlines herein
FEATURES
•
•
•
•
•
•
Similar To Industry Standard LM117A
Approved To DESC Standardized Military Drawing Number 7703405
Built In Thermal Overload Protection
Short Circuit Current Limiting
Available In Six Package Styles
Maximum Output Voltage Tolerance Is Guaranteed to + 1%
DESCRIPTION
These three terminal positive regulators are supplied in hermetically sealed
packages. All protective features are designed into the circuit, including thermal
shutdown, current-limiting, and safe-area control. With heat sinking, these devices
can deliver up to 1.5 amps of output current. The LCC-20 device is limited to .5
amps. The unit also features output voltages that can be fixed from 1.2 volts to 37
volts using external resistors.
ABSOLUTE MAXIMUM RATINGS
T
c
@ 25°C
Power Dissipation
Case 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 W
Case-All Others. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 W
Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Thermal Resistance, Junction to Case:
Case 2, LCC-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17°C/W
Case U & M, TO-257 (Isol) and SMD-3 . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
Case T&N, TO-257 (Non-Isol) and SMD-1 . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W
Case Y, TO-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0°C/W
Maximum Output Current:
Case 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 A
Case-All Others. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A
Recommended Operating Conditions:
Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.2 to 37 VDC
Ambient Operating Temperature Range (T
A
). . . . . . . . . . . . . . . . - 55°C to + 125°C
Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.25 to 41.25 VDC
4 11 R2
Supersedes 1 07 R1
3.5
3.5 - 17
OM1324NTM, OM1324STM, OM1324NKM, OM1324SMM, OM1324NMM, OM1324N2M
ELECTRICAL CHARACTERISTICS
Parameter
Reference Voltage
Symbol
V
REF
-55°C ≤ T
A
≤ 125°C, I
L
= 8mA (unless otherwise specified)
OM1324NTM, OM1324STM, OM1324NKM, OM1324SMM, OM1324NMM
Test Conditions
V
DIFF
= 3.0V, T
A
= 25°C
V
DIFF
= 3.3V
V
DIFF
= 40V
Line Regulation
(Note 1)
Load Regulation
(Note 1)
R
LOAD
R
LINE
3.0V ≤ V
DIFF
≤ 40V, V
out
= V
ref
, T
A
= 25°C
3.3V ≤ V
DIFF
≤ 40V, V
out
= V
ref
V
DIFF
= 3.0V, 10mA ≤ I
L
≤ 1.5A, T
A
= 25°C
V
DIFF
= 3.3V, 10mA ≤ I
L
≤ 1.5A
V
DIFF
= 40V, 10mA ≤ I
L
≤ 300mA, T
A
= 25°C
V
DIFF
= 40V, 10mA ≤ I
L
≤ 195mA
Thermal Regulation
V
RTH
V
in
= 14.6V, I
L
= 1.5A
P
d
= 20 Watts, t = 20 ms, T
A
= 25°C
Ripple Rejection
(Note 2)
Adjustment Pin Current
I
Adj
R
N
f = 120 Hz, V
out
= V
ref
C
Adj
= 10 µF
V
DIFF
= 3.0V, T
A
= 25°C
V
DIFF
= 3.3V
V
DIFF
= 40V
Adjustment Pin
Current Change
∆I
Adj
V
DIFF
= 3.0V, 10mA ≤ I
L
≤ 1.5A, T
A
= 25°C
V
DIFF
= 3.3V, 10mA ≤ I
L
≤ 1.5A
V
DIFF
= 40V, 10mA ≤ I
L
≤ 300mA, T
A
= 25°C
V
DIFF
= 40V, 10mA ≤ I
L
≤ 195mA
3.0V ≤ V
DIFF
≤ 40V, T
A
= 25°C
3.3V ≤ V
DIFF
≤ 40V
Miminum Load Current
I
Lmin
V
DIFF
= 3.0V, V
OUT
= 1.4V (forced)
V
DIFF
= 3.3V, V
OUT
= 1.4V (forced)
V
DIFF
= 40V, V
OUT
= 1.4V (forced)
Current Limit
(Note 2)
I
CL
V
DIFF
= 15V
V
DIFF
= 40V, T
A
= 25°C
100
•
Min.
1.238
Max.
1.262
1.270
1.270
4.5
9
15
15
15
15
5
mV
mV
mV
V
Unit
•
•
1.225
1.225
-4.5
-9
-15
•
•
-15
-15
-15
-5
•
66
dB
•
•
-5
100
100
5
5
5
5
5
5
5.0
µA
•
•
•
•
•
•
-5
-5
-5
-5
-5
µA
5.0
5.0
1.5
0.18
3.5
1.5
mA
A
Notes:
1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used.
Changes in output voltage due to heating effects must be taken into account separately.
2. If not tested, shall be guaranteed to the specified limits.
3. The
•
denotes the specifications which apply over the full operating temperature range.
PART NUMBER DESIGNATOR
Standard Military Drawing Number
Omnirel Part Number
OM1324SMM
OM1324STM
OM1324NTM
OM1324 NKM
OM1324NMM
OM1324N2M
Omnirel Package Designation
SMD-3
TO-257 (Isolated)
TO-257 (non-Isolated)
TO-3
SMD-1
LCC-20
3.5
7703405M
7703405U
7703405T
7703405Y
7703405N
77034052
3.5 - 18
OM1324NTM, OM1324STM, OM1324NKM, OM1324SMM, OM1324NMM, OM1324N2M
ELECTRICAL CHARACTERISTICS
OM1324N2M
Parameter
Reference Voltage
Symbol
V
REF
-55°C ≤ T
A
≤ 125°C, I
L
= 8mA (unless otherwise specified)
Min.
1.238
Max.
1.262
1.270
1.270
4.5
9
15
15
15
15
2
mV
mV
mV
V
Unit
Test Conditions
V
DIFF
= 3.0V, T
A
= 25°C
V
DIFF
= 3.3V
V
DIFF
= 40V
•
•
•
1.225
1.225
-4.5
-9
-15
Line Regulation
(Note 1)
Load Regulation
(Note 1)
R
LINE
3.0V ≤ V
DIFF
≤ 40V, V
out
= V
ref
, T
A
= 25°C
3.3V ≤ V
DIFF
≤ 40V, V
out
= V
ref
R
LOAD
V
DIFF
= 3.0V, 10mA ≤ I
L
≤ 500 mA, T
A
= 25°C
V
DIFF
= 3.3V, 10mA ≤ I
L
≤ 500 mA
V
DIFF
= 40V, 10mA ≤ I
L
≤ 150 mA, T
A
= 25°C
V
DIFF
= 40V, 10mA ≤ I
L
≤ 100 mA
•
•
-15
-15
-15
-2
Thermal Regulation
V
RTH
V
in
= 14.6V, I
L
= 300 mA
P
d
= 4.0 Watts, t = 20 ms, T
A
= 25°C
Ripple Rejection
(Note 2)
Adjustment Pin Current
R
N
f = 120 Hz, V
out
= V
ref
C
Adj
= 10 µF
•
66
dB
I
Adj
V
DIFF
= 3.0V, T
A
= 25°C
V
DIFF
= 3.3V
V
DIFF
= 40V
100
•
•
-5
100
100
5
5
5
5
5
5
5.0
µA
Adjustment Pin
Current Change
∆I
Adj
V
DIFF
= 3.0V, 10mA ≤ I
L
≤ 500 mA, T
A
= 25°C
V
DIFF
= 3.3V, 10mA ≤ I
L
≤ 500 mA
V
DIFF
= 40V, 10mA ≤ I
L
≤ 150mA, T
A
= 25°C
V
DIFF
= 40V, 10mA ≤ I
L
≤ 100mA
3.0V ≤ V
DIFF
≤ 40V, T
A
= 25°C
3.3V ≤ V
DIFF
≤ 40V
•
•
•
•
•
•
-5
-5
-5
-5
-5
µA
Miminum Load Current
I
Lmin
V
DIFF
= 3.0V, V
OUT
= 1.4V (forced)
V
DIFF
= 3.3V, V
OUT
= 1.4V (forced)
V
DIFF
= 40V, V
OUT
= 1.4V (forced)
5.0
5.0
0.5
0.15
1.65
0.65
mA
Current Limit
(Note 2)
I
CL
V
DIFF
= 15V
V
DIFF
= 40V, T
A
= 25°C
A
Notes:
1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used.
Changes in output voltage due to heating effects must be taken into account separately.
2. If not tested, shall be guaranteed to the specified limits.
3. The
•
denotes the specifications which apply over the full operating temperature range.
APPLICATION
V
in
V
out
OM1324STM
R
1
240Ω
I
Adj
C
in
*
0.1 µF
R
2
Adjust
* C
in
is required if regulator is located an
appreciable distance from power supply filter.
** C
o
is not needed for stability, however it does
improve transient response.
R
V
out
= 1.25 V (1 +
2
)+ I
Ad j
R
2
R
1
Since I
Adj
is controlled to less than 100 µA,
the error associated with this term is negligible
in most applications.
3.5
3.5 - 19
嵌入式系统
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