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NEGATIVE ADJUSTABLE
VOLTAGE REGULATOR
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Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However
Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to
verify that datasheets are current before placing orders.
Semelab Limited
Coventry Road, Lutterworth, Leicestershire, LE17 4JB
Telephone +44 (0) 1455 556565
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Document Number 8377
Issue 1
Page 1 of 5
IP137SMD05
/ LM137SMD05
IP137ASMD05
/ LM137ASMD05
IP137HVSMD05 / LM137HVSMD05
IP137AHVSMD05/ LM137AHVSMD05
ABSOLUTE MAXIMUM RATINGS (T
C = 25°C unless otherwise stated)
Standard
40V
VI - VO
Input – Output Voltage Differential
HV Series
50V
IO
Output Current
Internally Limited
PD
Power Dissipation
Internally Limited
TJ
Operating Junction Temperature Range
-55 to +150°C
Tstg
Storage Temperature Range
-65 to +150°C
THERMAL PROPERTIES
Symbols
Parameters
Min.
Typ.
Max.
Units
RθJC
Thermal Resistance, Junction To Case
3.5
°C/W
** This datasheet supersedes document 2831
DESCRIPTION
The 137 Series regulators are adjustable 3 terminal voltage regulators capable of supplying in excess of -1.5A over an output
voltage range of -1.2V to -37V (HV Series, -47V). The regulators are exceptionally easy to apply requiring only 2 external
resistors to set the output voltage and 1 output capacitor for frequency compensation.
Every effort has been made to make these devices easy to use and difficult to damage. Internal current limiting and power
limiting coupled with true thermal limiting prevents damage due to overloads or shorts, even if the regulators are not fastened
to a heat sink.
FEATURES
1.5A Output Current Guaranteed
Internal Thermal Overload Protection
Output Short Circuit Protected
Hermetic Ceramic Surface Mount Package
Screening Options Available
APPLICATIONS
Adjustable Power Supplies
System Power Supplies
Precision Voltage / Current Regulators