Details, datasheet, quote on part number: OM7603NT
DescriptionHi-rel Adjustable Voltage 3-Terminal Negative Regulator
CompanyInternational Rectifier Corp.
DatasheetDownload OM7603NT datasheet
Cross ref.Similar parts: LM237, LM337-N, KA337, LM337
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Features, Applications

Three Terminal, Adjustable Voltage, 1.5 Amp Precision Negative Regulator In Hermetic JEDEC TO-257AA Package


Isolated Hermetic Package, JEDEC TO-257AA Outline Adjustable Output Voltage Eliminates Stocking Fixed Voltages Built-In Thermal Overload Protection Short Circuit Current Limiting Product Is Available Screened To MIL-STD -883 Similar To Industry Standard P/N LM137


This three terminal negative regulator is 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 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.

Input-Output Voltage Differential. 40V Operating Junction Temperature Range. to +150C Storage Temperature Range. to +150C Typical Power/Thermal Characteristics: Rated Power @ 25C TC. 17.5W TA. 3W Thermal Resistance qJC. 3.5C/W qJA. 42C/W

Note: This device is also available in a non-isolated JEDEC TO-257AA package. Use part number OM7603NT for non-isolated unit.

Line Regulation (Note 1) Load Regulation (Note 1)

VDIFF IL 1.5A Thermal Regulation VRTH Vin = 20 Watts, = 10 ms, = 25C Ripple Rejection (Note 2) Adjustment Pin Current IAdj = 120 Hz, Vout = Vref CAdj = 10 F, Iout 100 mA VDIFF = 3.0V VDIFF = 40V Adjustment Pin Current Change IAdj (line) IAdj (load) Miminum Load Current ILmin VDIFF IL 1.5A VDIFF = 3.0V, Vout = -1.4V (forced) VDIFF = 10V, Vout = -1.4V (forced) VDIFF = 40V, Vout = -1.4V (forced) Current Limit (Note 2) ICL VDIFF 5V 3V VDIFF 40V

Notes: 1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used. Changes in output voltage due to heating effects must be taken into account separately. 2. If not tested, shall be guaranteed to the specified limits. 3. The denotes the specifications which apply over the full operating temperature range.


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