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HGSEMI UC2843BM/TR product image
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HGSEMI UC2843BM/TRRoHS

Manufacturer
HGSEMIAsian Brands
MPN
UC2843BM/TR
LCSC Part #
C19193446
Packaging
SOP-8
Customer #
Key Attributes
Current-mode PWM controller
Datasheetpdf iconHGSEMI UC2843BM/TR
In-Stock: 2,010
2,010 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
5+$ 0.1522$ 0.76
50+$ 0.1317$ 6.59
150+$ 0.1229$ 18.44
500+$ 0.1119$ 55.95
2,500+$ 0.1104$ 276.00
5,000+$ 0.1075$ 537.50
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/AC DC Converters, Offline Switchers
ManufacturerHGSEMI
PackagingSOP-8
Operating Temperature-40℃~+85℃
Frequency - Switching100kHz~500kHz
Output Current1A
Pd - Power Dissipation1W
Voltage - Breakdown-
Voltage - Supply10V~30V
Topology-
FeaturesUnder-voltage lockout;Slope compensation;Over Current Protection;Under Voltage Protection
Output Voltage0V~28V
Duty Cycle(Max)96%
Feedback System-
Working ModePWM Modulation
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Additional Information

TypeDetails
Minimum5
Multiple5
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

UC2843B is a high-performance fixed-frequency current-mode controller designed for isolated or DC-DC converter applications, offering designers a cost-effective solution requiring minimal external components. The circuit incorporates an undervoltage lockout module with a startup current of less than 0.5mA. A trimmed precision reference voltage providing high accuracy is connected to the error amplifier input. Additional internal modules include logic circuitry for latched operation, current limiting, and a PWM comparator designed to drive a high-current totem-pole output. The output architecture is suitable for driving N-channel MOSFETs, with the output held low during shutdown.

Features

AI Translation
  • Optimized for isolated or DC/DC converters
  • Low startup current (less than 0.5mA)
  • Automatic feed-forward compensation
  • Cycle-by-cycle current limiting
  • Enhanced load transient response
  • UVLO with hysteresis
  • Double-pulse suppression
  • High-current totem-pole output
  • Internal trimmed bandgap reference
  • Operating frequency up to 500kHz

Applications

AI Translation
  • Power converters