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HGSEMI UC2845BM/TR product image
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HGSEMI UC2845BM/TRRoHS

Manufacturer
HGSEMIAsian Brands
MPN
UC2845BM/TR
LCSC Part #
C19193450
Packaging
SOP-8
Customer #
Key Attributes
Current-mode PWM controller
Datasheetpdf iconHGSEMI UC2845BM/TR
In-Stock: 1,230
1,230 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
5+$ 0.2238$ 1.12
50+$ 0.1758$ 8.79
150+$ 0.1552$ 23.28
500+$ 0.1295$ 64.75
2,500+$ 0.118$ 295.00
5,000+$ 0.1111$ 555.50
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 Dissipation850mW
Voltage - Breakdown-
Voltage - Supply10V~30V
Topology-
FeaturesUnder-voltage lockout;Slope compensation;Over Current Protection;Under Voltage Protection
Output Voltage-
Duty Cycle(Max)50%
Feedback System-
Working ModePWM Modulation
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Additional Information

TypeDetails
Minimum5
Multiple5
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

UC2845B is a high-performance fixed-frequency current-mode controller designed for isolated or DC-DC converter applications, offering designers a cost-effective solution with minimal external components. The circuit features an undervoltage lockout module with startup current less than 0.5mA, a precision reference voltage connected to the error amplifier input that is trimmed for high accuracy. Additional internal modules include logic circuitry for latched operation, current limiting, and a PWM comparator designed for high-current totem-pole output. This output stage is suitable for driving N-channel MOSFETs, with the output held low during shutdown.

Features

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

Applications

AI Translation
  • Power converters