3.3 - 1
8 09 R0
(COTS) COMMERCIAL OFF-THE-SHELF 3.0 AMP POSITIVE
ADJUSTABLE VOLTAGE REGULAT OR IN T O-257 PACKAGE
FEATURES
• Isolated Hermetic Package, JEDEC TO-257AA Outline
• Reference Voltages Set To ± 2%
• Built-In Thermal Overload Protection
• Short Circuit Current Limiting
DESCRIPTION
These three terminal positive regulators are supplied in
a hermetically sealed isolated, metal T O-257 package. All protective features
are designed into the circuit including thermal shutdown, current limiting and safe-area
control. W ith heat sinking, they can deliver over 3.0 amps of output current. These
units feature 2% initial voltage tolerance, 0.35% load regulation and .01% line regulation.
ABSOLUTE MAXIMUM RATINGS
@ 25°C
Input - Output Voltage Dif ferential ........................................ +35 V
Operating Junction Temperature Range........................ - 55°C to + 150°C
Storage Temperature Range ................................. - 65°C to + 150°C
Typical Power/Thermal Characteristics:
Rated Power @ 25°C
TC............................................................... 25 W
TA................................................................ 3 W
Thermal Resistance .............................................. 4.2°C/W
ø
JA
.............................................................. 50°C/W
a
COM150T
Three Terminal, Adjustable Voltage, 3.0 Amp
Precision Positive Regulator In Hermetic
JEDEC TO-257AA Package
205 Crawford Street, Leominster, MA 01 453 USA (978) 534-5776 FAX (978) 537-4246
3.3
ELECTRICAL CHARACTERISTICS -55°C T
A
125°C (Note 1) unless otherwise specified
Test Symbol Conditions Limits Unit
Min. Max.
Reference Voltage V
REF
I
OUT
= 10mA 1.20 1.30 V
T
A
= 25°C
3.0V (V
IN - VOUT
) 35V, P 30W 1.20 1.30 V
10mA I
OUT
3.0A (Note 2)
Line Regulation R
LINE
3.0V (V
IN - VOUT
) 35V, 0.01 % / V
(Note 2) I
OUT
= 10mA, TJ= 25°C
3.0V (V
IN - VOUT
) 35V, 0.05 % / V
I
OUT
= 10mA
Load Regulation R
LOAD
10mA I
OUT
3.0A, 17.5 m V
(Note 2) V
OUT
5.0A, TJ= 25°C
10mA I
OUT
3.0A, 50 m V
V
OUT
5.0A
10mA I
OUT
3.0A, 0.35 %
V
OUT
5.0A, TJ= 25°C
10mA I
OUT
3.0A, 1. 0 %
V
OUT
5.0A
Thermal Regulation 20ms pulse, T
A
=25 °C 0.01 % / W
Ripple Rejection R
N
V
OUT
= 10V, f = 120Hz 66 dB
(Note 3) C
ADJ
= 10µF
Adjust Pin Current I
Adj
100 µA
Adjust Pin ³I
Adj
10mA I
OUT
3.0A, I
OUT
= 10mA 5. 0 µA
Current Change 3.0V (V
IN - VOUT
) 35V
Miminum Load Current I
MIN
(V
IN - VOUT
) = 35V 5.0 m A
Current Limit I
CL
(V
IN - VOUT
) 10V 3. 0 A
(V
IN - VOUT
) = 30V 0.3 A
Notes:
1. Unless otherwise specified, these specifications apply for (VIN- V
OUT
) = 5.0V and I
OUT
= 1.5A.
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.
MECHANICAL OUTLINE
TO-257AA
.430
.410
.200
.190
.038 MAX.
.005
.120 TYP.
.537
.527
.665
.645
.420
.410
.150
.140
.750
.500
.100 TYP.
.035
.025
.045
.035
PIN CONNECTION
Front View
Pin 1: Adjust
Pin 2: Vout
Pin 3: Vin
Tab: Isolated
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