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VOLTAGE REGULATOR. OM7602 Datasheet |
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ISOLATED HERMETIC TO-257AA
ADJUSTABLE VOLTAGE REGULATOR
OM7602ST
Three Terminal, Adjustable Voltage, 1.5 Amp
Precision Positive Regulator In Hermetic
JEDEC TO-257AA Package
FEATURES
• Isolated Hermetic Package, JEDEC TO-257AA Outline
• Adjustable Output Voltage
• Eliminates Stocking Fixed Voltages
• Built-In Thermal Overload Protection
• Short Circuit Current Limiting
• Product Is Available Screened To OM803
• Similar To Industry Standard P/N LM117
DESCRIPTION
This three terminal positive regulator is supplied in a hermetically sealed metal
package whose outline is similar to the industry standard TO-220 plastic package. All
protective features are designed into the circuit, including thermal shutdown, current
limiting and safe-area control. With heat sinking, they can deliver over 1.0 amp of
output current. This unit features output voltages that can be trimmed using external
resistors, from 1.2 volts to 37 volts.
ABSOLUTE MAXIMUM RATINGS @ 25°C
Input-Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +150°C
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65° to +150°C
Typical Power/Thermal Characteristics:
Rated Power @ 25°C
TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W
TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Thermal Resistance
qJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W
qJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
3.3
Note: This device is also available in a non-isolated JEDEC TO-257AA package.
Use part number OM7602NT for non-isolated unit.
4 11 R4
Supersedes 1 07 R3
3.3 - 131
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OM7602ST
3.3
ELECTRICAL CHARACTERISTICS -55°C TA 125°C, IL = 8mA (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Max.
Unit
Reference Voltage
Line Regulation
(Note 1)
Load Regulation
(Note 1)
Thermal Regulation
Ripple Rejection
(Note 2)
Adjustment Pin Current
Adjustment Pin
Current Change
Miminum Load Current
Current Limit
(Note 2)
VREF
RLINE
RLOAD
VRTH
RN
IAdj
³IAdj
ILmin
ICL
VDIFF = 3.0V, TA = 25°C
VDIFF = 3.3V
VDIFF = 40V
3.0V VDIFF 40V, Vout = Vref, TA = 25°C
3.3V VDIFF 40V, Vout = Vref
VDIFF = 3.0V, 10mA IL 1.5A, TA = 25°C
VDIFF = 3.3V, 10mA IL 1.5A
VDIFF = 40V, 10mA IL 300mA, TA = 25°C
VDIFF = 40V, 10mA IL 195mA
Vin = 14.6V, IL = 1.5A
Pd = 20 Watts, t = 20 ms, TA = 25°C
f = 120 Hz, Vout = Vref
CAdj = 10 µF, Iout = 100 mA
VDIFF = 3.0V, TA = 25°C
VDIFF = 3.3V
VDIFF = 40V
VDIFF = 3.0V, 10mA IL 1.5A, TA = 25°C
VDIFF = 3.3V, 10mA IL 1.5A
VDIFF = 40V, 10mA IL 300mA, TA = 25°C
VDIFF = 40V, 10mA IL 195mA
3.0V VDIFF 40V, TA = 25°C
3.3V VDIFF 40V
VDIFF = 3.0V, VOUT = 1.4V (forced)
VDIFF = 3.3V, VOUT = 1.4V (forced)
VDIFF = 40V, VOUT = 1.4V (forced)
VDIFF = 15V
VDIFF = 40V, TA = 25°C
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1.238
1.225
1.225
-4.5
-9
-15
-15
-15
-15
-5
66
-5
-5
-5
-5
-5
-5
1.5
0.18
1.262
1.270
1.270
4.5
9
15
15
15
15
5
100
100
100
5
5
5
5
5
5
5.0
5.0
5.0
3.5
1.5
V
mV
mV
mV
dB
µA
µA
mA
A
Notes:
1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used.
Changes in output voltage due to heating effects must be taken into account separately.
2. If not tested, shall be guaranteed to the specified limits.
3. The • denotes the specifications which apply over the full operating temperature range.
STANDARD APPLICATION
* CIN is required if regulator is located an appreciable
distance from power supply filter.
** CO is not needed for stability, however it does improve
transient response.
VOUT = 1.25V (1 + R2 ) + IAdj R2
R1
Since IAdj is controlled to less than 100µA, the error
associated with this term is negligible in most applications.
VIN OM7602ST
IAdj Adjust
CIN*
0.1µF
VOUT
R1
240
+ COUT**
1.0µF
R2
3.3 - 132
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TYPICAL PERFORMANCE CHARACTERISTICS
OM7602ST
LOAD REGULATION
0.4
0.2
0
-0.2
-0.4
-0.6
VI = 15V
VO = 10V
-0.8
IL = 0.5A
IL = 1.5A
-1.0
-75 -50 -25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
CURRENT LIMIT
4
3
TJ = 25°C
2
TJ = 150°C
1
TJ = -55°C
0
0
10 20
30 40
VI - VO, INPUT - OUTPUT VOLTAGE DIFFERENTIAL (Vdc)
ADJUSTMENT PIN CURRENT
70
65
60
55
50
45
40
35
-75 -50 -25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
DROPOUT VOLTAGE
3.0
VO = 100mV
2.5 IL = 1.5A
IL = 1.0A
2.0
IL = 500mA
1.5 IL = 200mA
IL = 20mA
1.0
-75 -50 -25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
1.260
TEMPERATURE STABILITY
1.250
1.240
1.230
1.220
-75 -50 -25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
MINIMUM OPERATING CURRENT
5.0
4.5
4.0 TJ = -55°C
3.5 TJ = 25°C
3.0
2.5 TJ = 150°C
2.0
1.5
1.0
0.5
0
0 10 20 30 40
VI - VO, INPUT - OUTPUT VOLTAGE DIFFERENTIAL (Vdc)
3.3 - 133
3.3
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