ETC OM1325STM

OM1325SMM OM1325NMM
OM1325NKM OM1325NTM
OM1325STM
OM1325N2M
1.5 AMP NEGATIVE ADJUSTABLE VOLTAGE
REGULATOR APPROVED TO DESC DRAWING 7703406
Three Terminal, Precision Adjustable
Negative Voltage Regulator In Hermetic
Style Packages (LM137A)
Please see mechanical
outlines herein
FEATURES
•
•
•
•
•
•
Similar To Industry Standard LM137A
Approved To DESC Standardized Military Drawing Number 7703406
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 negative 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 Tc @ 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 (TA). . . . . . . . . . . . . . . . - 55°C to + 125°C
Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -4.25 to -41.25 VDC
4 11 R2
Supersedes 1 07 R1
3.5 - 21
3.5
OM1325NTM, OM1325STM, OM1325NKM, OM1325SMM, OM1325NMM, OM1325N2M
ELECTRICAL CHARACTERISTICS
-55°C ≤ TA ≤ 125°C, IL = 8mA (unless otherwise specified)
OM1325NTM, OM1325STM, OM1325NKM, OM1325SMM, OM1325NMM
Parameter
Symbol
Test Conditions
Min.
Max.
Reference Voltage
VREF
VDIFF  = 3.0V, TA = 25°C
-1.262
-1.238
-1.280
-1.220
-1.280
-1.220
-4.5
4.5
-13.8
13.8
-25
25
VDIFF  = 12V, 8mA ≤ IL ≤ 1.5A, TA = 25°C
-25
25
VDIFF  40V, 8mA ≤ IL ≤ 1.5A, TA = 25°C
-25
25
-50
50
-5
5
VDIFF  = 3.0V
VDIFF  = 40V
Line Regulation
RLINE
3.0 V ≤ VDIFF  ≤ 40V, TA = 25°C
RLOAD
VDIFF  = 5V, 8mA ≤ IL ≤ 1.5A
3.0V ≤ VDIFF  ≤ 40V
(Note 1)
Load Regulation
(Note 1)
VDIFF  = 40V, 8mA ≤ IL ≤ 1.5A
Thermal Regulation
VRTH
•
•
•
•
•
Vin = -14.6V, IL = 1.5A
Unit
V
mV
mV
mV
Pd = 20 Watts, t = 10 ms, TA = 25°C
Ripple Rejection
RN
f = 120 Hz, Vout = Vref
IAdj
VDIFF  = 3.0V
(Note 2)
Adjustment Pin Current
•
66
dB
CAdj = 10 µF
VDIFF  = 40V
•
•
3V ≤ VDIFF  ≤ 40V
•
-5
(load)
VDIFF  = 5V, 8mA ≤ IL ≤ 1.5A
VDIFF  = 3.0V, Vout = -1.4V (forced)
•
•
•
•
•
-5
ILmin
Adjustment Pin
∆IAdj
Current Change
(line)
100
100
µA
5
µA
5
µA
∆IAdj
Miminum Load Current
VDIFF  = 10V, Vout = -1.4V (forced)
VDIFF  = 40V, Vout = -1.4V (forced)
Current Limit
VDIFF  ≤ 5V
ICL
VDIFF  = 40V, TA = 25°C
(Note 2)
3.0
3.0
mA
5.0
1.5
3.5
0.24
1.2
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
3.5
Standard Military Drawing Number
Omnirel Part Number
7703406M
7703406U
7703406T
7703406Y
7703406N
77034062
OM1325SMM
OM1325STM
OM1325NTM
OM1325NKM
OM1325NMM
OM1325N2M
3.5 - 22
Omnirel Package Designation
SMD-3
TO-257 (Isolated)
TO-257 (non-Isolated)
TO-3
SMD-1
LCC-20
OM1325NTM, OM1325STM, OM1325NKM, OM1325SMM, OM1325NMM, OM1325N2M
ELECTRICAL CHARACTERISTICS
-55°C ≤ TA ≤ 125°C, IL = 8mA (unless otherwise specified)
OM1325N2M
Parameter
Symbol
Test Conditions
Min.
Max.
Reference Voltage
VREF
VDIFF  = 3.0V, TA = 25°C
-1.262
-1.238
-1.280
-1.220
-1.280
-1.220
VDIFF  = 3.0V
•
•
VDIFF  = 40V
Line Regulation
3.0 V ≤ VDIFF  ≤ 40V, TA = 25°C
RLINE
3.0V ≤ VDIFF  ≤ 40V
(Note 1)
Load Regulation
VDIFF  = 5V, 8mA ≤ IL ≤ 200 mA
RLOAD
(Note 1)
•
•
VRTH
Ripple Rejection
RN
4.5
-13.8
13.8
-25
25
VDIFF  = 15V, 8mA ≤ IL ≤ 200m, ATA = 25°C
-25
25
VDIFF  40V, 8mA ≤ IL ≤150 mA, ATA = 25°C
-25
25
-50
50
-5
5
VDIFF  = 40V, 8mA ≤ IL ≤ 50 mA
Thermal Regulation
-4.5
•
Vin = -16.25V, IL =330 mA
Unit
V
mV
mV
mV
Pd =5 Watts, t = 10 ms, TA = 25°C
•
f = 120 Hz, Vout = Vref
(Note 2)
66
dB
CAdj = 10 µF
VDIFF  = 3.0V
VDIFF  = 40V
•
•
3V ≤ VDIFF  ≤ 40V
•
-5
(load)
VDIFF  = 5V, 8mA ≤ IL ≤ 500 mA
VDIFF  = 3.0V, Vout = -1.4V (forced)
•
•
•
•
•
-5
ILmin
Adjustment Pin Current
IAdj
Adjustment Pin
∆IAdj
Current Change
(line)
100
100
µA
5
µA
5
µA
∆IAdj
Miminum Load Current
VDIFF  = 10V, Vout = -1.4V (forced)
VDIFF  = 40V, Vout = -1.4V (forced)
Current Limit
VDIFF  ≤ 5V
ICL
VDIFF  = 40V, TA = 25°C
(Note 2)
3.0
3.0
mA
5.0
0.5
1.8
0.15
0.65
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.
TYPICAL APPLICATION
* Cin is required if regulator is located more
than 4 inches from power supply filter. A 1 µF
solid tantalum or 10 µF aluminum electrolytic is
recommended.
IPROG
+
CIN*
+
R2
1.0µF
CO**
R1
120Ω
1.0µF
** Co is necessary for stability. A 1 µF solid
tantalum or 10 µF aluminum electrolytic is
recommended.
IAdj
VIN
-VIN
VOUT
OM1325STM
-VOUT
3.5 - 23
Vout = -1.25 V (1 +R2)
R1
3.5
OM1325NTM, OM1325STM, OM1325NKM, OM1325SMM, OM1325NMM, OM1325N2M
MECHANICAL OUTLINE
.425O
.200O
.190O
1
O
.045O
.035O
.100O
.200O
3
O
.420O
.410O
.425O
.035 WIDEO
FLAT 3 PLCS.O
2
.665O
.645O
.150O
.140O
.537O
.527O
O
.350 MIN.O
.430O
.410O
1 2 3
O
± .020O
.115O
.160O
.020O
.080 O
.038 MAX.O
OM1325SMM
.750O
.500O
.120 TYP.O
.100 TYP.O
.035O
.025O
Front View
Pin 1 - Adjust
Pin 2 - Output
Pin 3 - Input
Case - Isolated
O .005O
OM1325STM
Isolated
OM1325NTM
Non-Isolated
Front View
Pin 1 - Adjust
Pin 2 - Input
Pin 3 - Output
Tab - Isolated
Front View
Pin 1 - Adjust
Pin 2 - Input
Pin 3 - Output
Tab - Input
.140
.015
.140
.140
1
2
.075
.075
.157
.415
3
.062
.375
.030
MIN.
OM1325NMM
Pin 1 - Adjust
Pin 2 - Output
Pin 3 - Input
1.197
1.53
REF.
1.177
0.875
MAX.
0.675
0.655
0.188 R.
MAX.
0.135
MAX.
.009 R.
20 PLCS.
.065
0.440
0.420
.020 X45°
REF.
(±.003)
0.450
0.250
0.043
0.038
.010
9
.160
SQ. REF.
1
.085
0.312
MIN.
SEATING
PLANE
.075 (±.010)
TYP.
4
3
.025
TYP.
2
1
.040
13
19
0.225
0.205
0.161
0.151
0.525 R.
MAX.
.003
.025 SQ.
TYP.
18
.050 (±.005)
TYP.
2 PLCS.
14
.050
TYP.
.040 X45°
REF (3 PL)
OM1325N2M
OM1325NKM
3.5
Pin 1 - Adjust
Pin 2 - Output
Case - Input
Pin 1 VOUT
Pin 2 VOUT(Sense)
Pin 3 NC
Pin 4 NC
Pin 5 NC
Pin 6 NC
Pin 7 NC
Pin 8 NC
Pin 9 NC
Pin 10 NC
Pin 11
Pin 12
Pin 13
Pin 14
Pin 15
Pin 16
Pin 17
Pin 18
Pin 19
Pin 20
VIN
NC
NC
NC
NC
ADJUST
NC
NC
NC
NC
For additional information please see the mechanical outline section.