STMicroelectronics_UC2843BD1
original

STMicroelectronics
UC2843BD1

715-UC2843BD1
PWM Controller, 1A, 500kHz, SOIC, 30V
14 Weeks

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ISO9001
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Tech Specifications

Package/Case
SOIC
Duty Cycle
100%
Fall Time
50ns
Frequency
500kHz
Height
1.65mm
Lead Free
Lead Free
Length
5mm
Max Duty Cycle
100%
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UC2843BD1 Description

UC2843BD1 Description

The UC2843BD1 from STMicroelectronics is a high-performance current-mode PWM controller designed for DC-DC switching applications, including boost and flyback topologies. This surface-mount IC operates with a wide supply voltage range of 7.6V to 30V, making it suitable for industrial, automotive, and power supply designs. With a switching frequency capability of up to 500kHz, it enables compact and efficient power conversion. The device features a 96% maximum duty cycle, ensuring robust performance in high-load conditions. Its single-output transistor driver supports positive, isolation-capable configurations, enhancing flexibility in isolated power supply designs.

UC2843BD1 Features

  • Current-Mode Control: Improves loop response and simplifies compensation.
  • Wide Input Range (7.6V–30V): Supports diverse power supply architectures.
  • High Switching Frequency (500kHz): Enables smaller magnetics and capacitors.
  • 96% Max Duty Cycle: Optimized for high-efficiency applications.
  • Isolation-Capable Output: Suitable for isolated flyback designs.
  • Frequency Control: Precise regulation for stable operation.
  • RoHS3 & REACH Compliant: Meets environmental and safety standards.
  • Surface-Mount (SO-8) Package: Compact footprint for space-constrained designs.

UC2843BD1 Applications

  • Switch-Mode Power Supplies (SMPS): Efficient voltage conversion in industrial and telecom systems.
  • LED Drivers: High-frequency control for constant-current LED power stages.
  • Battery Chargers: Reliable regulation in automotive and portable charging circuits.
  • Isolated DC-DC Converters: Flyback topologies for medical and industrial power systems.
  • Auxiliary Power Supplies: Low-noise, high-efficiency solutions for embedded systems.

Conclusion of UC2843BD1

The UC2843BD1 stands out as a versatile, high-performance PWM controller, offering wide input voltage tolerance, high-frequency operation, and robust duty cycle control. Its current-mode architecture ensures stability, while its isolation capability makes it ideal for safety-critical applications. Compared to similar models, it excels in efficiency, compactness, and regulatory compliance, making it a top choice for demanding power conversion designs. Engineers can leverage its features in SMPS, LED drivers, and isolated converters to achieve reliable, high-efficiency performance.

FAQ

What voltage specification is listed for UC2843BD1?
The listed voltage-related specification for UC2843BD1 is 30V.
What is UC2843BD1?
Is UC2843BD1 currently in stock?
What is the mounting type of UC2843BD1?
Does UC2843BD1 have quantity-based pricing?
Availability (In Stock : 1486 )
Quantity Unit Price Ext. Price
1+ $1.24080 $1.24
10+ $0.90376 $9.04
25+ $0.81910 $20.48
100+ $0.72653 $72.65
300+ $0.67478 $202.43
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