UC1845AJ883B Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The UC1845AJ883B is a current-mode PWM controller IC from Texas Instruments, operating from 8.2V to 25V input and rated for -55°C to +125°C in a military-grade ceramic 8-pin DIP package. It provides precise pulse-width modulation control for high-reliability switching power supply designs. In stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- UC1845AJ883B Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Non-compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Military-grade MIL-STD-883B qualification supports use in aerospace, defense, and high-reliability power systems
- Current-mode PWM control technique provides inherent cycle-by-cycle current limiting and improved transient response
- Wide operating temperature range from -55°C to +125°C ensures reliable performance in extreme environments
- 8.2V to 25V input voltage range with 15V nominal allows flexible integration into various power architectures
Applications
The UC1845AJ883B is designed for military, aerospace, and high-reliability industrial switching power supplies where current-mode PWM control is required over wide temperature extremes. It is used in DC-DC converters, flyback regulators, and forward converters in avionics, defense electronics, and space-qualified power systems. Its MIL-STD-883B rating and ceramic DIP package make it a trusted choice for harsh-environment power management.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Not Compliant |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 25V |
| Input Voltage-Min | 8.2V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-GDIP-T8 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 5.05V |
| Output Voltage-Min | 4.95V |
| Output Voltage-Nom | 5V |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Screening Level | MIL-STD-883 Class B |
| Supply Current-Max (Isup) | 25mA |
| Supply Voltage-Max (Vsup) | 25V |
| Supply Voltage-Min (Vsup) | 12V |
| Supply Voltage-Nom (Vsup) | 11V |
| Surface Mount | NO |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 500kHz |
| Technology | BIPOLAR |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Non-compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UC1845AJ883B:
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, CDIP8
Power and Hybrid / Semelab Limited Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, CDIP8
Frequently Asked Questions
What control method does the UC1845AJ883B use and what are its benefits?
The UC1845AJ883B uses current-mode pulse-width modulation (PWM) control. This technique allows cycle-by-cycle current limiting, simplifies loop compensation, and provides faster transient response compared to voltage-mode control, which is critical in high-reliability power supply designs.
What is the operating voltage and temperature range of the UC1845AJ883B?
The UC1845AJ883B operates with an input voltage from 8.2V minimum to 25V maximum, with a 15V nominal supply. It is rated for a -55°C to +125°C temperature range, making it suitable for demanding military and aerospace environments.
What qualification standard does the UC1845AJ883B meet?
The UC1845AJ883B is qualified to MIL-STD-883B, the military standard for microelectronic testing. This qualification ensures the device meets stringent reliability and performance requirements for use in defense, aerospace, and high-reliability industrial systems.
What package does the UC1845AJ883B use?
The UC1845AJ883B is packaged in an 8-pin ceramic DIP (JESD-30 code R-GDIP-T8). The ceramic construction provides hermetic sealing and excellent thermal performance, making it ideal for high-reliability and harsh-environment applications.
What types of power supply topologies can use the UC1845AJ883B?
The UC1845AJ883B is suitable for flyback, forward, and other isolated or non-isolated DC-DC converter topologies that benefit from current-mode PWM control. It is widely used in single-switch converter designs for avionics, military power modules, and industrial control power supplies.
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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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