UC1845J883B Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The UC1845J883B is a current-mode PWM controller IC with 200 mA output, 500 kHz switching frequency, and 8.2V to 30V input range in an 8-Pin CDIP ceramic package. Designed for military-grade switching power supply designs meeting MIL-STD-883 specifications. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- UC1845J883B 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
- Current-mode PWM control with pulse-width modulation up to 500 kHz switching frequency
- Wide input voltage range of 8.2V to 30V (nominal 15V) for versatile power supply designs
- 200 mA gate drive output current enabling direct drive of power MOSFETs without external buffer
- 8-Pin CDIP ceramic package qualified to MIL-STD-883B for high-reliability military and aerospace use
Applications
The UC1845J883B is designed for high-reliability switching power supply applications in military, aerospace, and defense electronics requiring MIL-STD-883 qualification. It excels in current-mode controlled DC-DC converters, flyback regulators, and forward converters where precise cycle-by-cycle current limiting is essential. The device is well suited for avionics power management, rugged embedded systems, and radiation-tolerant power conversion units.
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 | 30V |
| 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-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) | 30V |
| Supply Voltage-Min (Vsup) | 12V |
| Surface Mount | NO |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 500kHz |
| Technology | BICMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Ceramic 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 UC1845J883B:
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, CDIP8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, CDIP8
Frequently Asked Questions
What control mode does the UC1845J883B use?
The UC1845J883B uses current-mode control with pulse-width modulation (PWM), which provides cycle-by-cycle current limiting, inherent feed-forward line regulation, and simplified loop compensation compared to voltage-mode controllers, making it ideal for robust power supply designs.
What is the switching frequency of the UC1845J883B?
The UC1845J883B operates at up to 500 kHz switching frequency, allowing designers to use smaller magnetic components and output filter capacitors, which reduces overall power supply size and weight in space-constrained military and aerospace applications.
What input voltage range does the UC1845J883B support?
The UC1845J883B accepts an input voltage range from 8.2V minimum to 30V maximum, with a nominal operating voltage of 15V. This wide range accommodates various power bus standards used in military and industrial equipment.
What does the 883B suffix on UC1845J883B mean?
The 883B suffix indicates the device is tested and qualified to MIL-STD-883B, the U.S. military standard for microelectronics reliability testing. This ensures the part meets stringent requirements for temperature cycling, mechanical shock, and electrical performance in defense and aerospace systems.
What package does the UC1845J883B come in?
The UC1845J883B is housed in an 8-Pin CDIP (Ceramic Dual-In-Line Package), which offers superior hermeticity and thermal stability versus plastic packages. The ceramic construction makes it well suited for operation across extreme temperature environments in military applications.
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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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