UC2834J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The UC2834J is a high-efficiency LDO linear regulator controller from Texas Instruments, operating over a wide 5 V to 36 V input range with under- and over-voltage fault alert and programmable delay. It features a single regulation channel, 16-pin CDIP ceramic package, and operates across -40°C to +85°C, making it suitable for industrial power supplies and voltage regulation in harsh environments.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UC2834J 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
- Wide input voltage range: 5 V to 36 V for versatile power design
- Under- and over-voltage fault alert with programmable delay
- Single-channel LDO controller for high-efficiency linear regulation
- -40°C to +85°C industrial temperature range
- 16-pin ceramic DIP package for high-reliability applications
- Compatible with external pass transistors to handle higher output currents
Applications
The UC2834J is designed for industrial power supply modules and voltage regulation circuits where wide input voltage swings from 5 V to 36 V must be safely managed. Its programmable under/over-voltage fault alert makes it ideal for ruggedized instrumentation, telecom power systems, and motor drive control boards that require monitored, reliable voltage rails. The ceramic 16-pin DIP package also suits military-grade and high-reliability designs that demand extended temperature performance from -40°C to 85°C.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | UNDER AND OVER-VOLTAGE FAULT ALERT WITH PROGRAMMABLE DELAY |
| Adjustable Threshold | NO |
| Analog IC - Other Type | UNDER/OVERVOLTAGE SUPERVISOR |
| Input Voltage-Max | 36V |
| Input Voltage-Min | 5V |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.45A |
| Output Voltage-Max | 35V |
| Output Voltage-Min | 2V |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 35V |
| Supply Voltage-Min (Vsup) | 5V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +0.15V |
| Trim/Adjustable Output | YES |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UC2834J:
Texas Instruments Fixed, 1 Channel, +0.15V, BIPolar, CDIP16
Unitrode Corporation Adjustable, 1 Channel, PDIP16
Frequently Asked Questions
What input voltage range does the UC2834J support, and how does it handle fault conditions?
The UC2834J supports an input voltage range of 5 V to 36 V, covering a wide range of industrial supply rails. It includes built-in under- and over-voltage fault alert with a programmable delay, allowing designers to set response timing to avoid false triggers from transient voltage spikes on the input rail.
How does the UC2834J's LDO controller architecture differ from a standard monolithic LDO regulator?
Unlike a monolithic LDO that integrates the pass element on-chip, the UC2834J is a controller IC that drives an external pass transistor. This architecture allows designers to select a pass device rated for higher currents and voltages beyond what a single-chip solution supports, making it suitable for output currents far exceeding 1 A depending on the external transistor chosen.
Which industrial applications benefit most from the UC2834J's programmable fault delay feature?
Industrial motor drives, telecom rectifiers, and PLC power supply modules all benefit from the programmable fault delay, which prevents nuisance shutdowns caused by brief line voltage dips of 1 ms to several milliseconds. The feature allows engineers to tune fault response to the specific transient profile of their power environment without additional external delay circuits.
What operating temperature range does the UC2834J support, and what package is it supplied in?
The UC2834J operates across a -40°C to +85°C temperature range, meeting standard industrial grade requirements. It is housed in a 16-pin CDIP (Ceramic Dual In-Line Package), which provides superior moisture resistance and thermal stability compared to plastic DIP packages, making it well-suited for harsh environment deployments.
Can the UC2834J regulate an output voltage adjustable below 5 V when driven from a 12 V input rail?
Yes, the UC2834J can regulate adjustable output voltages below 5 V when the input supply is 12 V, provided the external pass transistor and feedback network are sized accordingly. The minimum input voltage of 5 V sets the lower bound for the supply rail, but the regulated output can be set below that threshold using the external resistor divider connected to the feedback pin.
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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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