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Электронный компонент: OM1850STM

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3.3 - 79
3.3
OM1850NKM
Three Terminal, Positive Adjustable
Low Dropout Voltage Regulator In
Hermetic Packages
1 08 R4
Supersedes 0 03 R3
3 AMP LOW DROPOUT POSITIVE ADJUSTABLE
REGULATOR APPROVED TO DESC DRAWING 5962-88646
FEATURES
Similar To Industry Standard LT1085
Approved To DESC Standardized Military Drawing Number 5962-88646
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
DESCRIPTION
This three terminal positive adjustable voltage regulator is designed to provide 3.0A 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, SMD-1 or TO-3
packages, this device is ideally suited for Military applications where small size and high
reliability is required.
ABSOLUTE MAXIMUM RATINGS
@ 25C
Power Dissipation (P
d
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to + 150C
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300C
Thermal Resistance:
JC
(SMD-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5C/W
JA
(SMD-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5C/W
JC
(TO-257) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2C/W
JA
(TO-257). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42C/W
JC
(TO-3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0C/W
JA
(TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35C/W
Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 A
Recommended Operating Conditions:
Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3V to 15 V
Ambient Operating Temperature Range (T
A
). . . . . . . . . . . . . . . . . . . - 55C to + 125C
Input Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 25 V
a
OM1850STM
OM1850NMM
See Mechanical Outline
3.3 - 80
3.3
OM1850STM OM1850NMM OM1850NKM
ELECTRICAL CHARACTERISTICS
-55C
T
A
125C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Max.
Unit
Reference Voltage
V
REF
V
IN
- V
OUT
= 3.0 V, T
A
= 25 C
1.238
1.262
V
I
OUT
= 10 mA
1.5 V
V
IN
- V
OUT
25 V,
1.220
1.270
V
10 mA
I
OUT
2.0 A
Line Regulation
V
OUT
1.5 V
V
IN
- V
OUT
15 V,
0.2
%
(Note 1)
V
IN
I
OUT
= 10 mA, T
A
= 25 C
15 V
V
IN
- V
OUT
35 V,
0.5
%
I
OUT
= 10 mA
Load Regulation
V
OUT
V
IN
- V
OUT
= 3.0 V, T
A
= 25 C
0.8
%
(Note 1)
I
OUT
10 mA
I
OUT
2.0 A
1.0
%
Dropout Voltage
V
DO
I
OUT
= 2.0 A,
V
REF
= 1%
1.5
V
Thermal Regulation
-
30 ms pulse, T
A
= +25 C
0.02
%/W
Ripple Rejection
V
IN
f = 120 Hz, C
Adj
= 25 F,
60
dB
V
OUT
C
OUT
= 25 F (tantalum), I
OUT
= 2.0 A,
V
IN
- V
OUT
= 3.0 V
Adjust Pin Current
I
Adj
1.5 V
V
IN
- V
OUT
25 V,
120
A
10 mA
I
OUT
2.0 A
Adjust Pin Current Change
I
Adj
1.5 V
V
IN
- V
OUT
25 V,
5.0
A
10 mA
I
OUT
2.0 A
Miminum Load Current
I
Min
V
IN
- V
OUT
= 24 V
10
mA
Current Limit
I
Lim
V
IN
- V
OUT
5.0 V
3.2
A
V
IN
- V
OUT
= 25 V
0.2
A
Temperature Stability
V
OUT
-55 C
T
J
+125 C
1.5
%
(Note 2)
T
Long Term Stability
V
OUT
T
A
= +125 C, t = 1000 hrs
1.0
%
(Note 2)
T
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.
Part Number Designator
SMD #
Omnirel
Package
5962-8864601U
OM1850STM
TO-257 (Isolated)
5962-8864601N
OM1850NMM
SMD-1 (Non-Isolated)
5962-8864601X
OM1850NKM
TO-3
Part Numbering System
Voltage Regulators
OM-1850-S-T-M
Company
Identification
Part
Number
S= Isolated
N= Non isolated
Package
(see Package codes*)
Screening
M= MIL-M 38535
* Package Codes:
K= TO-204AA (TO-3)
M= SMD-1
T= TO-257AA
3.3 - 81
3.3
OM1850STM OM1850NMM OM1850NKM
TYPICAL PERFORMANCE CHARACTERISTICS
ADJUSTMENT PIN CURRENT
TEMERATURE (C)
ADJUSTMENT PIN CURRENT (A)
0
20
40
60
90
100
80
70
50
30
10
150
-50
-25
50
75
125
25
100
0
TEMPERATURE STABILITY
REFERENCE VOLTAGE (V)
1.230
-50
TEMPERATURE (C)
150
1.270
1.240
1.250
1.260
-25
0
25
50
75
100
125
MINIMUM OPERATING CURRENT
INPUT/OUTPUT DIFFERENTIAL (V)
T
j
= 25C
30
MINIMUM OPERATING CURRENT (mA)
0
5
10
15
20
25
7
10
T
j
= 150C
T
j
= -55C
9
8
6
5
4
3
2
1
0
35
SHORT CIRCUIT CURRENT
SHORT CIRCUIT CURRENT (A)
0
0
INPUT/OUTPUT DIFFERENTIAL (V)
5
10
15
20
25
30
35
6
-55C
LOAD REGULATION
OUTPUT VOLTAGE DEVIATION (%)
-0.20
-50
TEMPERATURE (C)
150
0.10
-0.15
-0.10
-0.05
0
0.05
-25
0
25
50
75
100
125
I=3A
1
2
3
4
5
25C
150C
DROPOUT VOLTAGE
MINIMUM INPUT/OUTPUT DIFFERENTIAL (V)
T
j
= -55C
T
j
2
1
0
0
4
OUTPUT CURRENT (A)
1
2
3
T
j
= 25C
0C
j
125C
T
-55C
j
150C
T
INDICATES GUARANTEED TEST POINT
FULL LOAD
I
= 150C
55C
T
j
150C
0C
T
j
125C
I =3
1.197
1.177
0.675
0.655
0.188 R.
MAX.
0.440
0.420
0.161
0.151
0.525 R.
MAX.
0.225
0.205
SEATING
PLANE
0.312
MIN.
0.450
0.250
0.043
0.038
2 PLCS.
0.135
MAX.
0.875
MAX.
1.53
REF.
3.3
.430
.410
.200
.190
.038 MAX.
.005
.120 TYP.
.537
.527
.665
.645
.420
.410
.150
.140
.750
.500
.100 TYP.
.035
.025
.045
.035
OUT
ADJ
IN
V
IN
V
+
TTL
2N3904
1k
1k
365
1%
121
1%
5V
V
10F
+
100F
OUT
ADJ
IN
V
V
R1
121
V
C2
100F
R2
5k
+
*NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS
OUT
V
OUT
=1.25V
)
R2
(
+
1 __
R1
C1
10F
+
1.2V - 15V Adjustable Regulator
5V Regulator with Shutdown
TYPICAL APPLICATIONS
OM1850
OM1850
.140
.415
.157
.015
.140
.140
.075
.075
.062
.375
.030
MIN.
SIDE VIEW
BOTTOM VIEW
TO-257AA
TO-257AA
OM1850STM
1
2 3
1
3
2
PIN OUT
OM1850NMM
1
VIN
2
Adjust
3
Output
SMD-1
OM1850STM OM1850NMM OM1850NKM
TO-3
PIN OUT
1
Adjust
2
V
IN
Case
V
OUT
SMD-1
MECHANICAL OUTLINES
OM1850NKM
4
NOTES
Case is metal/hermetically sealed
Isolated Tab
PIN OUT
1
Adjust
2
VOUT
3
VIN
4
Isolated