UC1846J883B Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
UC1846J883B is a current-mode PWM controller operating from 8 V to 40 V with up to 500 kHz switching frequency and 500 mA output drive. It uses a 16-pin ceramic DIP package rated for military-grade applications. Available from Texas Instruments with worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UC1846J883B Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UC1846J883B?
- Current-mode pulse width modulation control architecture providing inherent cycle-by-cycle overcurrent limiting and improved line transient response
- Wide 8 V to 40 V input voltage range supporting diverse power supply topologies including boost, flyback, and forward converters
- 500 kHz maximum switching frequency enabling smaller magnetic component selection and reduced filter size
- 500 mA peak output drive current capable of directly driving power MOSFETs and bipolar transistors in mid-power converter stages
- 16-pin ceramic DIP package meeting MIL-STD reliability standards for aerospace, defense, and high-reliability industrial applications
What is UC1846J883B used for?
UC1846J883B is used in military and aerospace DC-DC converter designs that demand current-mode PWM control with guaranteed operation across wide input voltage ranges of 8 V to 40 V. Its ceramic DIP package ensures reliable performance in high-vibration and temperature-extreme environments found in avionics and satellite power supplies. The device also suits high-reliability industrial power modules where cycle-by-cycle current limiting is critical for protecting load circuitry.
What are the specifications of UC1846J883B?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 8V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-CDIP-T16 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 0.5A |
| Package Body Material | CERAMIC, METAL-SEALED COFIRED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Screening Level | MIL-STD-883 Class B |
| Supply Voltage-Max (Vsup) | 40V |
| Supply Voltage-Min (Vsup) | 12V |
| Surface Mount | NO |
| Switching Frequency-Max | 500kHz |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## UC1846J883B Alternates Showing results | Image |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the UC1846J883B datasheet?
UC1846J883B Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UC1846J883B?
Compatible alternatives and drop-in replacements for UC1846J883B:
suggested
suggested
suggested
Frequently Asked Questions
What input voltage range and switching frequency does UC1846J883B support?
UC1846J883B operates from 8 V to 40 V input with a nominal 15 V rail, and switches at up to 500 kHz. The 500 kHz capability allows designers to use smaller inductors and capacitors compared to lower-frequency controllers, reducing converter size and weight in aerospace power supply modules.
How does current-mode control in UC1846J883B improve power supply reliability in military designs?
Current-mode PWM in UC1846J883B monitors peak inductor current every cycle, immediately truncating the gate pulse if current exceeds a set threshold. This cycle-by-cycle limiting prevents transformer saturation and MOSFET overcurrent in military-grade converters operating across wide 8 V to 40 V input swings and -55°C to 125°C temperature extremes, meeting demanding MIL-STD reliability requirements.
What gate drive current can UC1846J883B deliver and which power transistors can it drive directly?
UC1846J883B provides up to 500 mA peak output drive current, sufficient to directly drive medium-power N-channel MOSFETs with gate charges up to roughly 50 nC at 500 kHz without a buffer stage. This simplifies circuit design by eliminating discrete totem-pole drivers in converter designs rated up to several hundred watts.
Why is the ceramic DIP package of UC1846J883B specified for aerospace and defense applications?
The 16-pin ceramic DIP package provides hermetic sealing against moisture and corrosive gases, unlike plastic packages, ensuring long-term reliability in satellite and avionics environments with temperature cycles from -55°C to 125°C. The ceramic body also withstands higher radiation doses and mechanical shock levels required by MIL-STD-883 qualification, making UC1846J883B suitable for space and defense power modules.
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