IRF OM1840SCM

OM1840NKM OM1840SCM
OM1840NCM
5 AMP LOW DROPOUT POSITIVE ADJUSTABLE
REGULATOR APPROVED TO DESC DRAWING 5962-89521
Three Terminal, Positive Adjustable
Low Dropout Voltage Regulator In
Hermetic Packages
FEATURES
•
•
•
•
•
•
•
•
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
1 08 R3
Supersedes 4 11 R2
3.3 - 75
3.3
OM1840SCM OM1840NCM OM1840NKM
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,
1.238
1.262
V
1.225
1.270
V
0.2
%
0.5
%
0.3
%
0.4
%
IOUT = 10 mA, TA = 25° C
1.5 V ≤ VIN - VOUT  ≤ 25 V,
•
IOUT = 10 mA, IFL = 3.0 A
Line Regulation
∆VOUT
(Note 1)
∆VIN
1.5 V ≤ VIN - VOUT  ≤ 15 V,
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
IOUT = 10 mA, IFL = 3.0 A
Dropout Voltage
VDO
IFL = 3.0 A, ∆VREF = 1%
Thermal Regulation
-
30 ms pulse, TA = +25° C
∆VIN
f = 120 Hz, CAdj = 25 µF,
∆VOUT
COUT = 25 µF (tantalum), IFL = 3.0 A,
Adjust Pin Current
IAdj
1.5 V ≤ VIN - VOUT  ≤ 25 V,
Adjust Pin Current Change
∆IAdj
1.5 V ≤ VIN - VOUT  ≤ 25 V,
Ripple Rejection
•
•
•
1.5
V
0.015
%/W
60
dB
VIN - VOUT  = 3.0 V
•
120
µA
•
5.0
µA
•
•
•
•
10
mA
IOUT = 10 mA, IFL = 3.0 A
10 mA ≤ IOUT ≤ 3.0 A
Miminum Load Current
IMin
VIN - VOUT  = 25 V
Current Limit
ILim
VIN - VOUT  ≤ 5.0 V
VIN - VOUT  = 25 V
Temperature Stability
∆VOUT
(Note 2)
∆T
Long Term Stability
∆VOUT
(Note 2)
∆T
-55° C ≤ TJ ≤ +125° C
5.5
A
0.3
A
TA = +125° C, t = 1000 hrs
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 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
3.3
Standard Military Drawing Number
Omnirel Part Number
8952101Y
OM1840SCM
8952101Z
OM1840NCM
8952101X
OM1840NKM
“Y” = Isolated
“Z” = Non-Isolated
Part Numbering System
Voltage Regulators
isola
OM-1840-S-C-M
Company
Identification
Part
Number
* Package Codes:
Screening
M= MIL-M
38535
Package
(see Package codes*)
S= Isolated
N= Non
isolated
3.3 - 76
K= TO-204AA (TO-3)
Z= TO-259AA (Z-Tab)
C = TO-258AA
OM1840NKM OM1840SCM OM1840NCM
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD REGULATION
SHORT CIRCUIT CURRENT
10
OUTPUT VOLTAGE DEVIATION (%)
0.10
9
∆I= 5A
8
SHORT CIRCUIT CURRENT (A)
0.05
0
-0.05
-0.10
-0.15
7
150°C
6
25°C
5
-55°C
4
3
2
IFULL LOAD
1
-0.20
0
-50
-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
20
25
30
35
100
125
2
• INDICATES GUARANTEED TEST POINT
-55°C≤ TTjj≤ 150°C
-55°C
150°C
0°C0°C
≤ Tj ≤Tj125°C
125°C
1
Tj = -55°C
Tj = 25°C
Tj = 150°C
0
0
150
1
2
3
4
5
6
OUTPUT CURRENT (A)
TEMERATURE (°C)
TEMPERATURE STABILITY
MINIMUM OPERATING CURRENT
10
MINIMUM OPERATING CURRENT (mA)
1.270
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
3.3
9
8
7
6
5
Tj = 150°C
Tj = 25°C
4
3
2
1
Tj = -55°C
0
100 125 150
0
TEMPERATURE (°C)
3.3 - 77
5
10
15
20
25
30
INPUT/OUTPUT DIFFERENTIAL (V)
35
OM1840SCM OM1840NCM OM1840NKM
TYPICAL
APPLICATIONS
TYPICAL
APPLICATIONS
Parelleling Regulators
2 FEET #18 WIRE*
IN OM1840 OUT
VIN
Improving Ripple Rejection
ADJ
VIN
1+ R2
__
VOUT =1.25
R1
(
0.015Ω
0.015
IN OM1840 OUT
)
10µF
R1
120
OM1840
VIN ≥16.5V
VOUT
R1
1211% Ω
ADJ
+
150µF
IOUT = OA TO 15A
R2
365
1% Ω
*C1 IMPROVES RIPPLE
REJECTION. X C SHOULD BE
~ R1 AT RIPPLE FREQUENCY.
* THE #18 WIRE ACTS
AS BALLAST RESISTENCE
INSURING CURRENT SHARING
BETWEEN BOTH DEVICES.
ADJ
VIN
+ C1
10µF*
R2
1.2V - 15V Adjustable Regulator
VIN OM1840 VOUT
R1
121 Ω
ADJ
+
5V Regulator with Shutdown
VOUT †
VIN OM1840 VOUT
VIN
ADJ
+
C1
10µF
C2
100µF
R2
5k
+
+
10µF
2N3904
TTL
5V
121 Ω
1%
1k
100µF
365 Ω
1%
1k
*NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS
†
R2
__
V OUT =1.25V 1+ R1
(
)
MECHANICAL OUTLINE
.270
.240
.695
.685
.165
.155
MECHANICAL OUTLINE TO-3
.045
.035
0.875
MAX.
.550
.530
0.312
MIN.
.092 MAX.
.750
.500
0.225
0.205
0.043
0.038
2 PLCS.
.005
.065
.055
.200 TYP.
1
2
3
.140 TYP.
PIN OUT
1
2
3
0.675
0.655
0.188 R.
MAX.
0.450
0.250
SEATING
PLANE
3.3
1.177
0.135
MAX.
.835
.815
.707
.697
1.197
1.53
REF.
Adjust
VOUT
VIN
NOTES
• Case is metal/hermetically sealed
• Isolated Tab
PIN OUT
1
2
Case
Adjust
VIN
VOUT
0.161
0.151
0.525 R.
MAX.
0.440
0.420