ETC OM7604ST

OM7604ST
ISOLATED HERMETIC TO-257AA
ADJUSTABLE VOLTAGE REGULATOR
Three Terminal, Adjustable Voltage, 3.0 Amp
Precision Positive Regulator In A Hermetic
JEDEC TO-257AA Package
FEATURES
•
•
•
•
•
•
Isolated Hermetic Package, JEDEC TO-257AA Outline
Reference Voltages Set To ±2% (±1% Available)
Built-In Thermal Overload Protection
Short Circuit Current Limiting
Product Is Available Screened To MIL-STD-883
Similar To Industry Standard P/N LM150A
DESCRIPTION
These three terminal positive regulators are 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 3.0 amps of
output current. These units feature 2% initial voltage tolerance, 0.3% load regulation
and 0.01% line regulation.
ABSOLUTE MAXIMUM RATINGS @ 25°C
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +35V
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25W
TA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Thermal Resistance
qJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
qJA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W
Note: For ±1% device, add letter "A" in front of part number (e.g. OMA 7604ST).
4 11 R4
Supersedes 1 07 R3
3.3 - 141
3.3
OM7604ST
ELECTRICAL CHARACTERISTICS
Test
Reference Voltage
Symbol
VREF
-55°C TA 125°C (Note 1) unless otherwise specified
Conditions
Limits
IOUT = 10mA
Unit
Min.
Max.
1.20
1.30
V
1.20
1.30
V
0.01
%/V
0.05
%/
17.5
mV
50
mV
0.35
%
1.0
%
0.01
%/W
TA = 25°C
3.0V (VIN - VOUT) 35V, P 30W
10mA IOUT 3.0A (Note 2)
Line Regulation
³VOUT
3.0V (VIN - VOUT) 35V,
(Note 2)
³VIN
IOUT = 10mA, TJ = 25°C
3.0V (VIN - VOUT) 35V,
IOUT = 10mA
Load Regulation
³VOUT
10mA IOUT 3.0A,
(Note 2)
³IOUT
VOUT 5.0A, TJ = 25°C
10mA IOUT 3.0A,
VOUT 5.0A
10mA IOUT 3.0A,
VOUT 5.0A, TJ = 25°C
10mA IOUT 3.0A,
VOUT 5.0A
Thermal Regulation
20ms pulse, TA =25°C
Ripple Rejection
³VIN
(Note 3)
³VREF
Adjust Pin Current
IAdj
Adjust Pin
³IAdj
Current Change
VOUT = 10V, f = 120Hz
66
dB
CADJ = 10µF
10mA IOUT 3.0A, IOUT = 10mA
100
µA
5.0
µA
5.0
mA
3.0V (VIN - VOUT) 35V
Miminum Load Current
IMIN
(VIN - VOUT) = 35V
Current Limit
ICL
(VIN - VOUT) 10V
3.0
A
(VIN - VOUT) = 30V
0.3
A
Notes:
1. Unless otherwise specified, these specifications apply for (VIN - VOUT) = 5.0V and IOUT = 1.5A. Although power
dissipation is internally limited, these characteristics are applicable for power dissipation up to 30W.
2. Regulation is measured at a constant junction temperature using a pulse technique. Changes in output voltage
due to heating effects are covered under the specification for thermal regulation.
3. Guaranteed if not tested to the limits specified.
3.3
3.3 - 142
OM7604ST
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation
Current Limit
0.1
IOUT = 3A
0.2
0.3
TJ = 25°C
4
TJ = 150°C
2
0.4
0
0
Temperature (°C)
IOUT = 20 mA
1
75
1.26
1.25
1.24
1.23
-50 -25 -0 25 50 75 100 125 150
125
Ripple Rejection
60
CADJ = 0
VIN - VOUT = 5V
VOUT = 500mA
f = 120Hz
TJ = 25°C
5
CADJ = 10µF
80
60
CADJ = 0
40
VIN = 15V
20
VOUT = 10V
IOUT = 500mA
0
10 15 20 25 30 35
10
100
1
CADJ = 0
COUT = 0
0.1
0.01
CADJ = 10µF
COUT = 10µF
0.001
0.0001
10
100
1k
10k 100k
Frequency (Hz)
1M
Input Voltage
Change(V)
Output Impedance
VIN = 15V
VOUT = 10V
IOUT = 500mA
3
TJ = 25°C
2
TJ = -55°C
1
0
5 10 15 20 25 30 35 40
1k
10k
100k
60
CADJ = 0
VIN = 15V
50
40
0.1
1M
CADJ = 10µF
70
VOUT = 10V
f = 120Hz
TCASE = 25°C
1
Frequency (Hz)
Output Voltage
(Deviation (V)
Output Voltage (V)
10
TJ = 150°C
4
Ripple Rejection
1.5
Line Transient Response
0
-0.5
Load Transient Response
VOUT = 10V
IOUT = 50mA
TJ = 25°C
CADJ = 0
COUT = 0
1
0.5
COUT = 1µF
CADJ = 10µF
-1
1
0.5
0
0
10
20
Time (µs)
3.3 - 143
30
10
Output Current (A)
Output Voltage
Deviation (V)
0
125
80
Load
Current (A)
0
75
Input-Output Diffential(V)
Ripple Rejection (dB)
Ripple Rejection (dB)
CADJ = 10µF
25
5
0
100
20
-25
Ripple Rejection
100
40
35
Temperature (°C)
Temperature (°C)
80
40
Minimum Operating Current
Minimum IOUT Current (mA)
IOUT = 2 A
Reference Voltage (V)
Input-Output Differential (V)
2
25
45
Temperature Stability
IOUT = 3 A
-25
50
Temperature (°C)
1.27
2.5
0.5
-75
55
Input-Output Differential (V)
∆VOUT = 100 mV
1.5
60
30
-75
5 10 15 20 25 30 35
Dropout Voltage
3
Ripple Rejection (dB)
Adjustment Current (µA)
TJ = -55°C
0
0.5
-75 -50 -25 0 25 50 75 100 125 150
Output Impedance (Ohms)
Adjustment Current
65
6
Output Current (A)
Voltage Change (Percent)
1.0
40
1.5
1
0.5
0
-0.5
-1
-1.5
1.5
1
0.5
0
3.3
COUT = 0 CADJ = 0
COUT = 1µF CADJ = 10µF
VIN = 15V, VOUT = 10V
Preload = 100mA
TJ = 25°C
0
10
20
Time (µs)
30
40
OM7604ST
TYPICAL APPLICATIONS
1.2 - 2.5V Adjustable Regulator
VIN
Improving Ripple Rejection
VOUT+
+
VOUT
Adj
VIN
+
C2 +l
1µF
1K
Adj
500
10µf*
*Needed if device is far
from filter capacitors.
R2
+
+
VOUT = 1.25V 1+ R1
)
Remote Sensing
+10V
VOUT
VIN
VIN
Adj
2k
VOUT
+ C1
Precision High Current Reference
VIN
VIN
*C1 improves ripple rejection,
XC should be small compared to R2.
(
VIN
0.5
5V
R1
121
1%
R2
365
1%
R2
5k
+l Optional - improves
transient response.
VOUT
Adj
1µF
R1
240
C1*
1µF
VIN
Adjustable Current Limiter
Rp (Max Drop 300mV)
VOUT
5V
Adj
7
+ 3
2k
15k
1%
VIN
7
6
LT 1001
4
2
- 2.5V
LT 1009
25
4.99k
1%
121
LT 301A
+
1
8
365
- 2
6
4
100pF
+
5µF
-
PIN CONNECTION
.200
.190
.420
.410
.045
.035
Tab
.665
.645
.150
.140
.537
.527
3.3
.430
.410
.038 MAX.
.750
.500
.100 TYP.
.035
.025
RET
25
Return
MECHANICAL OUTLINE
RL
3 1k
.005
.120 TYP.
NOTES
• Case is metal/hermetically sealed
• Isolated Tab
1 2 3
Front View
Pin 1: Adjust
Pin 2: VOUT
Pin 3: VIN
Tab:
Isolated
205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246