OM3914NKM
OM3914STM
OM3914NTM
3 AMP NEGATIVE ADJUSTABLE REGULATOR APPROVED
TO DESC DRAWING 5962-87741
Three Terminal, Negative Adjustable
Voltage Regulator In Hermetic
Packages
FEATURES
•
•
•
•
•
•
•
•
Similar To Industry Standard LT1033
Approved To DESC Standardized Military Drawing Number 5962-8774101
Adjustable Output Voltage
Built In Thermal Overload Protection
Short Circuit Current Limiting
Maximum Output Voltage Tolerance is Guaranteed To ±1%
Guaranteed Dropout Voltage At Multiple Current Levels
TO-257 Available in Isolated and Non-Isolated Packages
DESCRIPTION
This three terminal negative adjustable voltage regulator is designed to provide 3A
with higher efficiency than conventional voltage regulators. This device is designed
to operate down to 1 Volt input to output differential and the dropout voltage is fully
specified as a function of load current. Supplied in easy-to-use hermetic TO-257 and
TO-3, this device is ideally suited for Military applications where small size and high
reliability is required.
ABSOLUTE MAXIMUM RATINGS @ 25°C
Power Dissipation (P
d
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 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:
(TO-257, Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W
(TO-257, Non-Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3°C/W
(TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0°C/W
Recommended Operating Conditions:
Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3V to -15 V
Ambient Operating Temperature Range (T
A
) . . . . . . . . . . . . . . . . - 55°C to + 125°C
Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 5V to -35 V
3.3
1 08 R2
Supersedes 4 11 R1
3.3 - 119
OM3914STM OM3914NTM OM3914NKM
ELECTRICAL CHARACTERISTICS
Parameter
Reference Voltage
Symbol
V
REF
∆V
OUT
∆V
IN
∆V
OUT
∆I
OUT
-55°C
≤
T
A
≤
+125°C (unless otherwise specified)
Min.
-1.238
Max.
-1.262
V
-1.215
-1.285
0.015
%/V
0.04
50
mV
75
1.0
%
1.5
0.02
56
%/W
dB
53
70
dB
60
100
2.0
µA
5.0
5.0
mA
3.0
3.0
6.0
A
3.0
0.5
2.5
A
0.5
1.5
%
µA
Unit
Test Conditions
V
IN
- V
OUT
= 5 V, I
OUT
= 5 mA, T
A
= 25° C
3 V
≤ V
IN
- V
OUT
≤
35 V
•
•
•
•
Line Regulation
(Note 1)
Load Regulation
(Note 1)
3 V
≤ V
IN
- V
OUT
≤
35 V
V
OUT
≤
5 V, T
A
= 25° C
10 mA
≤
I
OUT
≤
I
MAX.
V
OUT
≥
5.0 V
10 mA
≤
I
OUT
≤
I
MAX.
Thermal Regulation
Ripple Rejection
(Note 2)
-
∆V
IN
∆V
REF
30 ms pulse, T
A
= 25° C
V
OUT
=
-10 V, f = 120 Hz, C
Adj
= 0
V
OUT
=
-10 V, f = 120 Hz, C
Adj
= 10 µF
•
•
•
•
•
•
•
•
•
•
Adjust Pin Current
Adjust Pin Current Change
I
Adj
∆I
Adj
V
DIFF
= 35 V, I
L
= 10 mA
10 mA
≤
I
OUT
≤
I
MAX.
3 V
≤ V
IN
- V
OUT
≤
35 V
V
IN
- V
OUT
≤
35 V
V
IN
- V
OUT
≤
10 V
Minimum Load Current
I
Min
Current Limit
I
Lim
V
IN
- V
OUT
≤
10 V
V
IN
- V
OUT
= 35 V
Temperature Stability
(Note 2)
Long Term Stability
(Note 2)
∆V
OUT
∆T
∆V
OUT
∆T
-55° C
≤
T
J
≤
+125° C
T
A
= +125° C, t = 1000 hrs
1.0
%
Notes:
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 30 W.
Power dissipation is determined by the input/output differential voltage and the 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. The • denotes the specifications which apply over the full operating temperature range.
3.3
PART NUMBER DESIGNATOR
Standard Military Drawing Number
5962-8774101U
5962-8774101T
5962-8774101X
“U” = Isolated
“T” = Non-Isolated
Omnirel Part Number
OM3914STM
OM3914NTM
OM3914NKM
Part Numbering System
Voltage Regulators
OM-3914-S-T-M
Company
Identification
Part
Number
Screening
M= MIL-M 38535
Package
(see Package codes*)
S= Isolated
N= Non isolated
3.3 - 120
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