ETC OM1850NMM

OM1850NKM OM1850STM
OM1850NMM
3 AMP LOW DROPOUT POSITIVE ADJUSTABLE
REGULATOR APPROVED TO DESC DRAWING 5962-88646
Three Terminal, Positive Adjustable
Low Dropout Voltage Regulator In
Hermetic Packages
See Mechanical Outline
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 @ 25°C
Power Dissipation (Pd) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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:
θJC (SMD-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W
θJA (SMD-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W
θJC (TO-257) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
θJA (TO-257). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
θJC (TO-3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0°C/W
θJA (TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35°C/W
Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 A
Recommended Operating Conditions:
Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3V to 15 V
Ambient Operating Temperature Range (TA). . . . . . . . . . . . . . . . . . . - 55°C to + 125°C
Input Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 25 V
a
1 08 R4
Supersedes 0 03 R3
3.3 - 79
3.3
OM1850STM OM1850NMM OM1850NKM
ELECTRICAL CHARACTERISTICS
-55°C ≤ TA ≤ 125°C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Max.
Unit
Reference Voltage
VREF
VIN - VOUT  = 3.0 V, TA = 25° C
1.238
1.262
V
1.220
1.270
V
0.2
%
0.5
%
0.8
%
1.0
%
IOUT = 10 mA
1.5 V ≤ VIN - VOUT  ≤ 25 V,
•
10 mA ≤ IOUT ≤ 2.0 A
Line Regulation
∆VOUT
1.5 V ≤ VIN - VOUT  ≤ 15 V,
(Note 1)
∆VIN
IOUT = 10 mA, TA = 25° C
15 V ≤ VIN - VOUT  ≤ 35 V,
•
IOUT = 10 mA
Load Regulation
∆VOUT
VIN - VOUT  = 3.0 V, TA = 25° C
(Note 1)
∆IOUT
10 mA ≤ IOUT ≤ 2.0 A
Dropout Voltage
VDO
IOUT = 2.0 A, ∆VREF = 1%
Thermal Regulation
-
30 ms pulse, TA = +25° C
Ripple Rejection
∆VIN
f = 120 Hz, CAdj = 25 µF,
∆VOUT
COUT = 25 µF (tantalum), IOUT = 2.0 A,
IAdj
1.5 V ≤ VIN - VOUT  ≤ 25 V,
•
•
•
1.5
V
0.02
%/W
60
dB
VIN - VOUT  = 3.0 V
Adjust Pin Current
•
120
µA
•
5.0
µA
10
mA
10 mA ≤ IOUT ≤ 2.0 A
Adjust Pin Current Change
∆IAdj
1.5 V ≤ VIN - VOUT  ≤ 25 V,
10 mA ≤ IOUT ≤ 2.0 A
Miminum Load Current
IMin
VIN - VOUT  = 24 V
Current Limit
ILim
VIN - VOUT  ≤ 5.0 V
Temperature Stability
∆VOUT
-55° C ≤ TJ ≤ +125° C
VIN - VOUT  = 25 V
(Note 2)
∆T
Long Term Stability
∆VOUT
(Note 2)
∆T
•
•
•
•
3.2
A
0.2
TA = +125° C, t = 1000 hrs
A
1.5
%
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
SMD #
5962-8864601U
5962-8864601N
5962-8864601X
Omnirel
OM1850STM
OM1850NMM
OM1850NKM
Package
TO-257 (Isolated)
SMD-1 (Non-Isolated)
TO-3
Part Numbering System
Voltage Regulators
OM-1850-S-T-M
Company
Identification
Part
Number
* Package Codes:
K= TO-204AA (TO-3)
M= SMD-1
T= TO-257AA
Screening
M= MIL-M 38535
Package
(see Package codes*)
S= Isolated
N= Non isolated
3.3 - 80
OM1850STM OM1850NMM OM1850NKM
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD REGULATION
SHORT CIRCUIT CURRENT
0.10
6
5
SHORT CIRCUIT CURRENT (A)
OUTPUT VOLTAGE DEVIATION (%)
I=3A
∆I
=3∆
0.05
0
-0.05
-0.10
-0.15
-0.20
-50
4
25°C
150°C
3
-55°C
2
I FULL LOAD
1
0
-25
0
25
50
75
100 125 150
0
5
TEMPERATURE (°C)
MINIMUM INPUT/OUTPUT DIFFERENTIAL (V)
ADJUSTMENT PIN CURRENT (µA)
90
80
70
60
50
40
30
20
10
0
-50
-25
0
25
50
75
100
125
20
25
30
35
2
• INDICATES GUARANTEED TEST POINT
-55°C≤ TTj ≤j 150°C
150°C
55°C
125°C
0°C ≤TTj j ≤125°C
1
Tj = -55°C
Tj = 25°C
Tj = 150°C
0
0
150
1
2
3
4
TEMERATURE (°C)
OUTPUT CURRENT (A)
TEMPERATURE STABILITY
MINIMUM OPERATING CURRENT
1.270
10
MINIMUM OPERATING CURRENT (mA)
REFERENCE VOLTAGE (V)
15
DROPOUT VOLTAGE
ADJUSTMENT PIN CURRENT
100
10
INPUT/OUTPUT DIFFERENTIAL (V)
1.260
1.250
1.240
1.230
-50
-25
0
25
50
75
8
7
6
5
TEMPERATURE (°C)
Tj = 150°C
Tj = 25°C
4
3
2
1
0
100 125 150
3.3
9
Tj = -55°C
0
5
10
15
20
25
INPUT/OUTPUT DIFFERENTIAL (V)
3.3 - 81
30
35
OM1850STM OM1850NMM OM1850NKM
TYPICAL APPLICATIONS
1.2V - 15V Adjustable Regulator
5V Regulator with Shutdown
VIN OM1850 VOUT
R1
121 Ω
ADJ
+
VOUT †
VIN
VIN
C2
100µF
R2
5k
VOUT
+
+
10µF
1k
100µF
365 Ω
1%
2N3904
TTL
5V
121 Ω
1%
ADJ
+
C1
10µF
OM1850
1k
*NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS
†
R2
__
V OUT =1.25V 1+ R1
(
)
MECHANICAL OUTLINES
TO-257AA
SMD-1
.200
.190
.420
.410
.015
.075
.075
4
.537
.527
1 2 3
.750
.500
.030
MIN.
.415
3
.062
.375
.005
.120 TYP.
.100 TYP.
TO-257AA
OM1850STM
2
.430
.410
.038 MAX.
.035
.025
1
.157
.665
.645
.150
.140
.140
.140
.140
.045
.035
1
2
3
4
SMD-1 BOTTOM VIEW
SIDE VIEW
PIN OUT
Adjust
VOUT
VIN
Isolated
PIN OUT
OM1850NMM
1 VIN
2 Adjust
3 Output
NOTES
• Case is metal/hermetically sealed
• Isolated Tab
TO-3
1.197
1.53
REF.
3.3
1.177
0.875
MAX.
0.675
0.655
0.188 R.
MAX.
0.135
MAX.
0.450
0.250
0.312
MIN.
SEATING
PLANE
0.225
0.205
0.043
0.038
0.161
0.151
2 PLCS.
OM1850NKM
PIN OUT
1
2
Case
Adjust
VIN
VOUT
0.525 R.
MAX.
0.440
0.420