COM137T ETC [List of Unclassifed Manufacturers], COM137T Datasheet
COM137T
Manufacturer Part Number
COM137T
Description
(COTS) COMMERCIAL OFF-THE-SHELF 1.5 AMP NEGATIVE, ADJUSTABLE VOLTAGE REGULATOR IN TO-257 PKG
Manufacturer
ETC [List of Unclassifed Manufacturers]
Datasheet
1.COM137T.pdf
(2 pages)
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(COTS) COMMERCIAL OFF-THE-SHELF 1.5 AMP NEGATIVE,
ADJUSTABLE VOLTAGE REGULATOR IN TO-257 PKG
FEATURES
• Built In Thermal Overload Protection
• Short Circuit Current Limiting
DESCRIPTION
These three terminal negative regulators are supplied in hermetically sealed pack-
ages. All protective features are designed into the circuit, including thermal shutdown,
current-limiting, and safe-area control. With heat sinking, these devices can deliver
up to 1.5 amps of output current. The unit also features output voltages that can be
fixed from -1.2 volts to -37 volts using external resistors.
ABSOLUTE MAXIMUM RATINGS
Power Dissipation
. 20 W
Input - Output Voltage Diff e r e n t i a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 0
V Operating Junction Te m p e r a t u r e R a n g e . . . . . . . . . . . . . . . . . . . . . - 5 5 ° C t o + 1 5 0 ° C
Storage Te m p e r a t u r e R a n g e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 6 5 ° C t o + 1 5 0 ° C
Lead Te m p e r a t u r e ( S o l d e r i n g 1 0 s e c o n d s ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
300°C
T h e r m a l R e s i s t a n c e , J u n c t i o n t o C a s e : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 . 2 ° C / W
M a x i m u m O u t p u t C u r r e n t : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 A
Recommended Operating Conditions:
37 VDC
125°C
TO - 2 5 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Vo l t a g e R a n g e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 1 . 2 t o -
Ambient Operating Temperature Range (T
Input Vo l t a g e R a n g e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 4 . 2 5 t o - 4 1 . 2 5
Three Terminal, Precision Adjustable
Negative Voltage Regulator In TO-257 Package
3 . 3 - 1
A
) . . . . . . . . . . . . . . . . . . - 5 5 ° C t o +
T
c
@ 25°C
COM137T
3.3
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COM137T Summary of contents
Page 1
... 1.5 A Recommended Operating Conditions: Output VDC Ambient Operating Temperature Range (T 125°C Input 25° ° COM137T 3.3 ...
Page 2
... COM137T ELECTRICAL CHARACTERISTICS Parameter Symbol Reference Voltage V REF Line Regulation R LINE (Note 1) Load Regulation R LOAD (Note 1) Thermal Regulation V RTH Ripple Rejection R N (Note 2) Adjustment Pin Current Adjustment Pin ³ Current Change ³ I (Load Miminum Load Current ...