| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| UC3903DW | Texas Instruments | $3.4418 | Voltage Supervisor/Reset IC, Adjustable, 4 Channel, 1.8, BIPolar, PDSO18 | UC2903Q vs UC3903DW |
| SG2548DW-TR | Microchip Technology Inc | Check for Price | Adjustable, 4 Channel, +3.5V, PDSO16 | UC2903Q vs SG2548DW-TR |
| UC3903QTRG3 | Texas Instruments | Check for Price | Voltage Supervisor/Reset IC, Adjustable, 4 Channel, BIPolar, PQCC20 | UC2903Q vs UC3903QTRG3 |
| UC3903Q | Texas Instruments | Check for Price | Voltage Supervisor/Reset IC, Adjustable, 4 Channel, BIPolar, PQCC20 | UC2903Q vs UC3903Q |
| UC3903DWTR | Texas Instruments | Check for Price | Voltage Supervisor/Reset IC, Adjustable, 4 Channel, 1.8, BIPolar, PDSO18 | UC2903Q vs UC3903DWTR |
Part Details for UC2903Q by Texas Instruments
Results Overview of UC2903Q by Texas Instruments
- Distributor Offerings: (1 listing)
- Number of FFF Equivalents: (0 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (5 options)
- CAD Models: (Request Part)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
UC2903Q Information
UC2903Q 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.
Price & Stock for UC2903Q
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
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DISTI #
296-34731-5-ND
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DigiKey | IC SUPERVISOR 4 CHANNEL 20PLCC Container: Tube |
0 Tube |
|
Buy Now |
US Tariff Estimator: UC2903Q by Texas Instruments
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
UC2903Q Part Data Attributes
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UC2903Q
Texas Instruments
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Datasheet
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Compare Parts:
UC2903Q
Texas Instruments
Voltage Supervisor/Reset IC, Adjustable, 4 Channel, +1.8V, BIPolar, PQCC20
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| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Part Package Code | QLCC | |
| Package Description | Lcc-20 | |
| Pin Count | 20 | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.60 | |
| Additional Feature | Mnl Rst:N;Pw Fl Io:N;Prg Rst Dly:N;Wd:N;Wdo:N;Wwd:N | |
| Adjustable Threshold | Yes | |
| Analog IC - Other Type | Voltage Supervisor/Reset Ic | |
| JESD-30 Code | S-PQCC-J20 | |
| JESD-609 Code | e3 | |
| Length | 8.965 Mm | |
| Moisture Sensitivity Level | 2 | |
| Number of Channels | 4 | |
| Number of Functions | 1 | |
| Number of Terminals | 20 | |
| Operating Temperature-Max | 85 °C | |
| Operating Temperature-Min | -40 °C | |
| Package Body Material | Plastic/Epoxy | |
| Package Code | QCCJ | |
| Package Equivalence Code | LDCC20,.4SQ | |
| Package Shape | Square | |
| Package Style | Chip Carrier | |
| Peak Reflow Temperature (Cel) | 260 | |
| Qualification Status | Not Qualified | |
| Screening Level | Aec-Q100 | |
| Seated Height-Max | 4.57 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 | Yes | |
| Technology | Bipolar | |
| Temperature Grade | Industrial | |
| Terminal Finish | Matte Tin | |
| Terminal Form | J Bend | |
| Terminal Pitch | 1.27 Mm | |
| Terminal Position | Quad | |
| Threshold Voltage-Nom | +1.8v | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Width | 8.965 Mm |
Alternate Parts for UC2903Q
This table gives cross-reference parts and alternative options found for UC2903Q. 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 UC2903Q, 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.
UC2903Q Frequently Asked Questions (FAQ)
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The recommended operating voltage range for the UC2903Q is 10.5V to 15V, although it can operate up to 18V with reduced performance.
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To ensure proper biasing, connect a 1kΩ resistor between the VCC pin and the VIN pin, and a 2.2kΩ resistor between the VIN pin and ground. This sets the internal voltage regulator to 12V.
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The EN pin is an active-low input that enables or disables the UC2903Q. Connect it to ground to enable the device, or to VCC to disable it. Use a pull-up resistor to ensure the pin is not left floating.
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Choose a capacitor with a value between 10uF to 100uF, depending on the output voltage and current requirements. A larger capacitor value reduces output ripple but increases startup time.
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The UC2903Q can deliver up to 3A of output current, but this may vary depending on the input voltage, output voltage, and thermal conditions.