OMNIREL OM1840SCM, OM1840NKM, OM1840NCM Datasheet

3.3 - 75
3.3
OM1840NKM
1 08 R3 Supersedes 4 11 R2
5 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-89521
• Similar To Industry Standard LT1084
• Approved To DESC Standardized Military Drawing Number 5962-89521
• 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-258 Available in Isolated and Non-Isolated Packages
DESCRIPTION
This three terminal positive adjustable voltage regulator is designed to provide 5A 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-258 and 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(TO-258 Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.0°C/W
θJC(TO-258 Non-Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3°C/W
θJC(TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.0°C/W
Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0 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
OM1840SCM OM1840NCM
Three Terminal, Positive Adjustable Low Dropout Voltage Regulator In Hermetic Packages
3.3 - 76
3.3
OM1840SCM OM1840NCM OM1840NKM
ELECTRICAL CHARACTERISTICS -55°C T
A
+125°C (unless otherwise specified)
Parameter Symbol Test Conditions Min. Max. Unit
Reference Voltage V
REF
VIN- V
OUT
= 3.0 V, 1.238 1.262 V
I
OUT
= 10 mA, TA= 25° C
1.5 V ≤V
IN
- V
OUT
≤25 V, 1.225 1.270 V
I
OUT
= 10 mA, IFL= 3.0 A
Line Regulation ∆V
OUT
1.5 V ≤VIN- V
OUT
≤15 V, 0.2 %
(Note 1) ∆V
IN
I
OUT
= 10 mA, TA= 25° C
15 V ≤V
IN
- V
OUT
≤35 V, 0.5 %
I
OUT
= 10 mA
Load Regulation ∆V
OUT
VIN- V
OUT
= 3.0 V, TA= 25° C 0.3 %
(Note 1) ∆I
OUT
I
OUT
= 10 mA, IFL= 3.0 A
0.4 %
Dropout Voltage V
DO
IFL= 3.0 A, ∆V
REF
= 1% 1.5 V
Thermal Regulation - 30 ms pulse, T
A
= +25° C 0.015 %/W
Ripple Rejection ∆V
IN
f = 120 Hz, C
Adj
= 25 µF, 60 dB
V
OUT
C
OUT
= 25 µF (tantalum), IFL= 3.0 A,
V
IN
- V
OUT
= 3.0 V
Adjust Pin Current I
Adj
1.5 V ≤VIN- V
OUT
≤25 V, 120 µA
I
OUT
= 10 mA, IFL= 3.0 A
Adjust Pin Current Change ∆I
Adj
1.5 V ≤VIN- V
OUT
≤25 V, 5.0 µA
10 mA ≤ I
OUT
3.0 A
Miminum Load Current I
Min
VIN- V
OUT
= 25 V 10 mA
Current Limit I
Lim
VIN- V
OUT
≤5.0 V 5.5 A
V
IN
- V
OUT
= 25 V 0.3 A
Temperature Stability ∆V
OUT
-55° C ≤ TJ≤ +125° C 1.5 %
(Note 2) ∆T
Long Term Stability ∆V
OUT
TA= +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 45 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
Standard Military Drawing Number Omnirel Part Number
8952101Y OM1840SCM
8952101Z OM1840NCM
8952101X OM1840NKM
“Y” = Isolated
“Z” = Non-Isolated
Part Numbering System
Voltage R egula tors
OM - 1840 -
S - C - M
Company Identification
Part Number
S= Isolated N= N on isola ted
Package (see Package codes*)
Screening M= MIL-M 3853 5
* Package Codes:
K= TO-204AA (TO-3) Z= TO-259AA (Z-Tab) C = TO-258AA
isola
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3.3
OM1840NKM OM1840SCM OM1840NCM
TYPICAL PERFORMANCE CHARACTERISTICS
-55°C ≤ Tj ≤ 150°C
0°C ≤ Tj ≤ 125°C
LOAD REGULATION
0.10
0.05
-0.05
-0.10
-0.15
OUTPUT VOLTAGE DEVIATION (%)
-0.20
100
90
80
70
60
50
40
30
20
ADJUSTMENT PIN CURRENT (µA)
10
0
0
-50
0 100
TEMPERATURE (°C)
ADJUSTMENT PIN CURRENT
TEMERATURE (°C)
∆I= 5A
SHORT CIRCUIT CURRENT
10
9
8
7
6
5
4
3
2
SHORT CIRCUIT CURRENT (A)
I
FULL LOAD
1
150-25 25 50 75 125
0
0
5 101520253035
INPUT/OUTPUT DIFFERENTIAL (V)
150°C
25°C
-55°C
DROPOUT VOLTAGE
2
1
MINIMUM INPUT/OUTPUT DIFFERENTIAL (V)
150-50 -25 50 75 12525 1000
0
• INDICATES GUARANTEED TEST POINT
-55°Cj150°C
T
0°Cj125°C
T
Tj= -55°C
Tj= 25°C
T
= 150°C
j
012 3 4 56
OUTPUT CURRENT (A)
TEMPERATURE STABILITY
1.270
1.260
1.250
1.240
REFERENCE VOLTAGE (V)
1.230
-25 0 25 50 75 100 125
-50
TEMPERATURE (°C)
150
MINIMUM OPERATING CURRENT
10
9
8
7
6
5
4
3
2
MINIMUM OPERATING CURRENT (mA)
1
0
Tj= 25°C
Tj= 150°C
Tj= -55°C
300 5 10 15 20 25
INPUT/OUTPUT DIFFERENTIAL (V)
35
3.3
OM1840SCM OM1840NCM OM1840NKM
MECHANICAL OUTLINE
NOTES
Case is metal/hermetically sealed
Isolated Tab
V OUT
IN OUT
ADJ
ADJ
IN
VOUT
IOUT
IN
=1.25 )
1+ R2
__ R1
(
2 FEET #18 WIRE*
* THE #18 WIRE ACTS AS BALLAST RESISTENCE INSURING CURRENT SHARING BETWEEN BOTH DEVICES.
= OA TO 15A
R1 120
R2
0.015
OUT
ADJ
IN
10µF
VV
R1 1211%
IN
V
IN
V 16.5V
150µF
C1 10µF*
R2 365 1%
+
+
C
*C1 IMPROVES RIPPLE REJECTION. X
SHOULD BE
R1 AT RIPPLE FREQUENCY.
~
~
OUT
ADJ
IN
V
IN
V
+
TTL
2N3904
1k
1k
365 1%
121 1%
5V
V
10µF
+
100µF
OUT
ADJ
IN
VV
R1 121
V
C2 100µF
R2 5k
+
*NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS
OUT
VOUT =1.25V )
R2
(
+
1
__ R1
C1 10µF
+
TYPICAL APPLICATIONS
Parelleling Regulators Improving Ripple Rejection
1.2V - 15V Adjustable Regulator 5V Regulator with Shutdown
TYPICAL APPLICATIONS
OM1840
OM1840
OM1840
OM1840
OM1840
0.015
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.
MECHANICAL OUTLINE TO-3
PIN OUT
1 Adjust 2V
IN
Case V
OUT
PIN OUT
1 Adjust 2V
OUT
3V
IN
123
.695 .685
.165 .155
.835
.707 .697
.815
.550 .530
.270 .240
.045 .035
.750 .500
.200 TYP.
.065 .055
.140 TYP.
.092 MAX.
.005
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