OM1860NKM
OM1860STM
OM1860NHM
1.5 AMP LOW DROPOUT POSITIVE ADJUSTABLE
REGULATOR APPROVED TO DESC DRAWING 5962-89981
Three Terminal, Positive Adjustable
Low Dropout Voltage Regulator In
Hermetic Packages
FEATURES
•
•
•
•
•
•
•
•
Similar To Industry Standard LT1086
Approved To DESC Standardized Military Drawing Number 5962-89981
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 positive adjustable voltage regulator is designed to provide 1.5A
with higher efficiency than conventional voltage regulators. This device is designed
to operate to 1 Volt input to output differential and the dropout voltage is specified as
a function of load current. Supplied in easy-to-use hermetic TO-257, TO-3 and
TO-39 packages, 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:
θ
JC
(TO-257, Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
θ
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
θ
JC
(TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0°C/W
θ
JA
(TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35°C/W
θ
JC
(TO-39) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C/W
θ
JA
(TO-39) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W
Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A
Recommended Operating Conditions:
Output Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3V to 15 V
Ambient Operating Temperature Range (T
A
) . . . . . . . . . . . . . . . . - 55°C to + 125°C
Input Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 25 V
1 08 R3
Supersedes 4 11 R2
3.3
3.3 - 83
OM1860STM OM1860NKM OM1860NHM
ELECTRICAL CHARACTERISTICS
Parameter
Reference Voltage
Symbol
V
REF
-55°C
≤
T
A
≤
125°C (unless otherwise specified)
Min.
1.238
Max.
1.262
Unit
V
Test Conditions
V
IN
- V
OUT
= 3.0 V, T
A
= 25° C
I
OUT
= 10 mA
1.5 V
≤ V
IN
- V
OUT
≤
25 V,
10 mA
≤
I
OUT
≤
1.0 A
•
1.220
1.270
V
Line Regulation
(Note 1)
∆V
OUT
∆V
IN
1.5 V
≤ V
IN
- V
OUT
≤
15 V,
I
OUT
= 10 mA, T
A
= 25° C
15 V
≤ V
IN
- V
OUT
≤
35 V,
I
OUT
= 10 mA
0.2
%
•
0.5
%
Load Regulation
(Note 1)
∆V
OUT
∆I
OUT
V
IN
- V
OUT
= 3.0 V, T
A
= 25° C
10 mA
≤
I
OUT
≤
1.0 A
I
OUT
= 1.0 A,
∆V
REF
= 1%
30 ms pulse, T
A
= +25° C
f = 120 Hz, C
Adj
= 25 µF,
C
OUT
= 25 µF (tantalum), I
OUT
= 1.0 A,
V
IN
- V
OUT
= 3.0 V
1.5 V
≤ V
IN
- V
OUT
≤
25 V,
10 mA
≤
I
OUT
≤
1.0 A
1.5 V
≤ V
IN
- V
OUT
≤
25 V,
10 mA
≤
I
OUT
≤
1.0 A
V
IN
- V
OUT
= 25 V
V
IN
- V
OUT
≤
5.0 V
V
IN
- V
OUT
= 25 V
-55° C
≤
T
J
≤
+125° C
0.8
%
Dropout Voltage
Thermal Regulation
Ripple Rejection
V
DO
-
∆V
IN
∆V
OUT
•
•
•
60
1.0
1.5
0.04
%
V
%/W
dB
Adjust Pin Current
I
Adj
∆I
Adj
•
•
•
•
•
•
120
µA
Adjust Pin Current Change
5.0
µA
Miminum Load Current
Current Limit
I
Min
I
Lim
∆V
OUT
∆T
∆V
OUT
∆T
10
1.5
0.075
1.5
2.5
mA
A
A
%
Temperature Stability
(Note 2)
Long Term Stability
(Note 2)
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 15 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.
3.3
2. Guaranteed by design, characterization or correlation to other tested parameters.
3. The • denotes the specifications which apply over the full operating temperature range.
PART NUMBER DESIGNATOR
Standard Military Drawing Number
5962-8998101Y
5962-8998101X
5962-8998101U
Omnirel Part Number
OM1860NHM
OM1860NKM
OM1860STM
Part Numbering System
Voltage Regulators
Package
TO-39
TO-3
TO-257 (Isolated)
OM-1860-S-T-M
Company
Identification
Part
Number
Screening
M= MIL-M 38535
Package
(see Package codes*)
* Package Codes:
K= TO-204AA (TO-3)
H= TO-39
T= TO-257AA
S= Isolated
N= Non isolated
3.3 - 84
OM1860STM OM1860NKM OM1860NHM
LOAD REGULATION
0.10
2.5
∆
I= 1.5A
SHORT CIRCUIT CURRENT
SHORT CIRCUIT CURRENT (A)
2
OUTPUT VOLTAGE DEVIATION (%)
0.05
T
j
= 150°C
0
-0.05
-0.10
-0.15
-0.20
-50
-25
0
25
50
75
100
125
150
1.5
T
j
= 25°C
1
T
j
= -55°C
0.5
GUARANTEED
OUTPUT CURRENT
0
0
5
10
15
20
25
30
TEMPERATURE (°C)
INPUT/OUTPUT DIFFERENTIAL (V)
100
90
ADJUSTMENT PIN CURRENT
RIPPLE REJECTION VS. CURRENT
100
90
80
f
R
= 120Hz
V
RIPPLE
3Vp-p
f
R
=20kHz
V
RIPPLE
≤
3Vp-p
ADJUSTMENT PIN CURRENT (µA)
80
RIPPLE REJECTION (dB)
70
60
50
40
30
20
10
0
-50
-25
0
25
50
75
100
125
150
70
60
50
40
30
20
10
0
0
0.25
0.5
V
OUT
=5V
C
ADJ
=25µF
C
OUT
=25µF
V
RIPPLE
0.5Vp-p
V
RIPPLE
≤
0.5Vp-p
0.75
1
1.25
1.5
TEMERATURE (°C)
OUTPUT CURRENT (A)
TEMPERATURE STABILITY
2.0
MINIMUM OPERATING CURRENT
10
MINIMUM OPERATING CURRENT (mA)
9
8
7
6
5
4
3
2
1
0
0
5
10
T
j
= -55°C
15
20
25
30
35
T
j
= 25°C
T
j
= 150°C
OUTPUT VOLTAGE CHANGE (%)
1.0
0
-1.0
-2.0
-50
-25
0
25
50
75
100
125
150
TEMPERATURE (°C)
INPUT/OUTPUT DIFFERENTIAL (V)
3.3 - 85
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