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Isolated Hermetic Surface Mount Package
Adjustable Output Voltage
Eliminates Stocking Fixed Voltages
Built-In Thermal Overload Protection
Short Circuit Current Limiting
Product Is Available Hi-Rel Screened
Electrically Similar To Industry Standard Type LM137
DESCRIPTION
This three terminal negative regulator is supplied in a hermetically sealed metal
surface mount 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
Input to Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . - 55擄C to + 150擄C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55擄C to + 150擄C
Typical Power/Thermal Characteristics:
Rated Power @ 25擄C
T
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.5W
T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3W
Thermal Resistance:
胃
JC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5擄C/W
胃
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42擄C/W
Lead Temperature at Case (5 sec)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225擄C
3.5
4 11 R1
Supersedes 1 05 R0
3.5 - 129
1
2
