UC3844D
Category: PMIC - Voltage Regulators - DC DC Switching Controllers
Description: SMPS Controller
Price range ($)
0.26764 1.78704
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UC3844D
UC3844D has several brands around the world that may have alternate names for UC3844D due to regional differences or acquisition. UC3844D may also be known as the following names:
All sellers
3
Brand new
3
Certified preowned
3
Official
3
Third Party
3
Description
UC3844D
Stock:33858 |
UC |
SMPS Controller |
≥1: S$1.78704 S$1.60834 ≥5: S$1.34028 S$1.20625 ≥10: S$0.80417 S$0.72375 ≥20: S$0.78183 S$0.70365 ≥50: S$0.75950 S$0.68355 ≥100: S$0.73715 S$0.66344 ≥200: S$0.71482 S$0.64334 ≥500: S$0.70588 S$0.63530 ≥1000: S$0.69247 S$0.62323
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Inquiry
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UC3844D
Stock:310 |
On Semiconductor |
SMPS Controller |
≥1: S$1.52934 S$1.37641
More:
Inquiry
|
UC3844D
Stock:183 |
Texas Instruments 1023+ |
SMPS Controller |
≥1: S$0.26764 S$0.25158
More:
Inquiry
|
The UC3844, UC3845 series are high performance fixed frequency current mode controllers.They are specifically designed for Off-Line and dc-to-dc converter applications offering the designer a cost effective solution with minimal external components.These integrated circuits feature an oscillator, a temperature compensated reference,high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Also included are protective features consisting of input and reference under voltage lockouts each with hysteresis, cycle-by-cycle current limiting, a latch for single pulse metering, and a flip-flop which blanks the output off every other oscillator cycle, allowing output dead times to be programmed for50% to 70%.
These devices are available in an 8-pin dual-in-line plastic package as well as the 14-pin plastic surface mount (SO-14).The SO-14 package has separate power and ground pins for the totem pole output stage.
The UCX844 has UVLO thresholds of 16 V (on) and 10 V(off), ideally suited for off-line converters.The UCX845 is tailored for lower voltage applications having UVLO thresholds of 8.5 V(on) and 7.6 V (off).
● Current Mode Operation to 500 kHz Output Switching Frequency
● Output Dead time Adjustable from 50% to 70%
● Automatic Feed Forward Compensation
● Latching PWM for Cycle-By-Cycle Current Limiting
● Internally Trimmed Reference with Under voltage Lockout
● High Current Totem Pole Output
● Input Under voltage Lockout with Hysteresis
● Low Start up and Operating Current
● Direct Interface with Motorola SENSEFET Products
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Freight calculation
Express:(FEDEX, UPS, DHL, TNT)Free shipping on first 0.5kg for orders over S$263.85,Overweight will be charged separately
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