UC2903DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UC2903DWG4 is a quad supply and line monitor supervisory IC from Texas Instruments, monitoring four independent voltage rails with adjustable thresholds. It provides reliable system reset and power sequencing in an 18-pin SOP package. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- OBSOLETE
- Datasheet
- UC2903DWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad-channel voltage supervisor monitors four independent power supply rails simultaneously
- Adjustable threshold voltages allow flexible configuration for 3.3V, 5V, 12V, and custom rails
- 18-pin SOP package with 4 independent monitor inputs for compact multi-rail power management
- Power-fail input/output for early warning detection before supply voltage drops below critical level
Applications
The UC2903DWG4 is ideal for multi-rail power supply monitoring in industrial control systems, server power management units, and telecommunications equipment where four separate voltage domains must be supervised simultaneously. It provides system reset and power-fail warning functions in embedded systems requiring coordinated startup and shutdown sequencing across multiple voltage rails. The device is also well-suited for automotive and harsh-environment applications where supply integrity monitoring is critical to system safety.
Specifications
| YTEOL | 0 |
| Additional Feature | MNL RST:N;PW FL IO:Y;PRG RST DLY:N;WD:N;WDO:N;WWD:N |
| Adjustable Threshold | YES |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G18 |
| JESD-609 Code | e4 |
| Number of Channels | 4 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP18,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 15mA |
| Supply Voltage-Max (Vsup) | 40V |
| Supply Voltage-Min (Vsup) | 8V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | 1.8 |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many voltage rails can the UC2903DWG4 monitor simultaneously?
The UC2903DWG4 can monitor four independent voltage supply rails simultaneously. Each of the four channels has an adjustable threshold, allowing it to supervise mixed-voltage systems with rails such as 3.3V, 5V, 12V, and other custom voltages within a single 18-pin SOP device.
Does the UC2903DWG4 have adjustable reset thresholds?
Yes, the UC2903DWG4 features adjustable threshold voltages on all four monitoring channels. This flexibility allows designers to configure the exact undervoltage detection levels for each rail, making it suitable for a wide range of power supply topologies without requiring multiple fixed-threshold supervisor ICs.
What package does the UC2903DWG4 come in and what are its dimensions?
The UC2903DWG4 is available in an 18-pin SOP (Small Outline Package) with a 0.4-inch body width (package equivalence code SOP18,.4). This standard through-hole-compatible surface mount package simplifies PCB layout and allows the device to fit in compact power management sections of system boards.
What are typical applications for the UC2903DWG4?
Typical applications include multi-rail server power supplies, industrial programmable logic controllers, embedded computing systems, and telecommunications network equipment. The quad-channel monitoring capability makes it especially valuable where four or more voltage domains must be confirmed valid before system initialization or where power sequencing is required.
Is the UC2903DWG4 RoHS compliant?
The UC2903DWG4 carries a JESD-609 code of e4, indicating it is manufactured with lead-free materials and meets RoHS compliance requirements. Texas Instruments produces this device with plastic/epoxy package body material suitable for reflow soldering processes used in modern PCB assembly.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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