Datasheets
UC2903N by:
Texas Instruments
Texas Instruments
Unitrode Corporation
Not Found

Quad Supply and Line Monitor 18-PDIP -40 to 85

Part Details for UC2903N by Texas Instruments

Results Overview of UC2903N by Texas Instruments

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UC2903N Information

UC2903N by Texas Instruments is a Power Management Circuit.
Power Management Circuits are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Part Details for UC2903N

UC2903N CAD Models

UC2903N Part Data Attributes

UC2903N Texas Instruments
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UC2903N Texas Instruments Quad Supply and Line Monitor 18-PDIP -40 to 85
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Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Obsolete
Ihs Manufacturer TEXAS INSTRUMENTS INC
Part Package Code DIP
Package Description GREEN, PLASTIC, DIP-18
Pin Count 18
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer Texas Instruments
Adjustable Threshold YES
Analog IC - Other Type POWER SUPPLY SUPPORT CIRCUIT
JESD-30 Code R-PDIP-T18
JESD-609 Code e4
Length 22.48 mm
Number of Channels 4
Number of Functions 1
Number of Terminals 18
Operating Temperature-Max 85 °C
Operating Temperature-Min -40 °C
Package Body Material PLASTIC/EPOXY
Package Code DIP
Package Equivalence Code DIP18,.3
Package Shape RECTANGULAR
Package Style IN-LINE
Qualification Status Not Qualified
Seated Height-Max 5.08 mm
Supply Current-Max (Isup) 15 mA
Supply Voltage-Max (Vsup) 40 V
Supply Voltage-Min (Vsup) 8 V
Supply Voltage-Nom (Vsup) 15 V
Surface Mount NO
Technology BIPOLAR
Temperature Grade INDUSTRIAL
Terminal Finish NICKEL PALLADIUM GOLD
Terminal Form THROUGH-HOLE
Terminal Pitch 2.54 mm
Terminal Position DUAL
Width 7.62 mm

Alternate Parts for UC2903N

This table gives cross-reference parts and alternative options found for UC2903N. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of UC2903N, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
UC3903N Texas Instruments Check for Price Quad Supply and Line Monitor 18-PDIP 0 to 70 UC2903N vs UC3903N
5962-8987801EA Microchip Technology Inc Check for Price Power Supply Support Circuit, Fixed, 4 Channel, CDIP16 UC2903N vs 5962-8987801EA
5962-8987801EA Defense Logistics Agency Check for Price Power Supply Support Circuit, Fixed, 4 Channel, CDIP16, CERAMIC, DIP-16 UC2903N vs 5962-8987801EA
SG1548J Microchip Technology Inc Check for Price Power Supply Support Circuit, Adjustable, 4 Channel, +3.5V, CDIP16 UC2903N vs SG1548J
5962-8987801EA Linfinity Microelectronics Check for Price Power Supply Support Circuit, Fixed, 4 Channel, CDIP16, CERAMIC, DIP-16 UC2903N vs 5962-8987801EA

UC2903N Related Parts

UC2903N Frequently Asked Questions (FAQ)

  • Texas Instruments recommends a compact layout with the UC2903N placed close to the power source, and using a ground plane to reduce EMI. Additionally, it's recommended to keep the input and output traces separate and use a common mode choke to filter out noise.

  • To ensure the UC2903N operates within its SOA, it's recommended to use a soft-start circuit to limit the inrush current during startup, and to use a voltage supervisor to monitor the input voltage and prevent the device from operating outside its specified range during shutdown.

  • Texas Instruments recommends using a low-ESR ceramic capacitor with a value of 10uF to 22uF for the input capacitor, depending on the specific application and input voltage range.

  • To troubleshoot oscillations or instability issues, check the layout and placement of the device, ensure the input and output capacitors are properly sized and placed, and verify that the feedback loop is properly compensated. Additionally, check for any signs of overheating or excessive current draw.

  • The UC2903N is rated for operation from -40°C to 85°C, but it's recommended to derate the device's performance and ensure proper thermal management to prevent overheating above 70°C.