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HXY MOSFET UC3845B-HXY product image
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HXY MOSFET UC3845B-HXYRoHS

Manufacturer
HXY MOSFETAsian Brands
MPN
UC3845B-HXY
LCSC Part #
C18198398
Packaging
SOP-8
Customer #
Key Attributes
Current-mode Pulse Width Modulator
Datasheetpdf iconHXY MOSFET UC3845B-HXY
In-Stock: 165
165 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
5+$ 0.1868$ 0.93
50+$ 0.1459$ 7.30
150+$ 0.1283$ 19.25
500+$ 0.1064$ 53.20
2,500+$ 0.0926$ 231.50
5,000+$ 0.0868$ 434.00
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
ManufacturerHXY MOSFET
PackagingSOP-8
Operating Temperature0℃~+70℃
Output Current1A
Frequency - Switching500kHz
Pd - Power Dissipation1W
Voltage - Breakdown-
Voltage - Supply30V
Topology-
FeaturesUnder-voltage lockout;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

Constant-frequency current-mode PWM controller designed for off-line and DC-DC switching power supply applications. This IC integrates an oscillator, temperature-compensated reference, high-gain error amplifier, current-sensing comparator, and high-current totem-pole output, making it ideal for driving power MOSFETs. Additional protection features include input and reference undervoltage lockout with hysteresis, cycle-by-cycle current limiting, single-pulse metering latch, and a flip-flop that blanks the output every other oscillator cycle, allowing the output dead time to be set between 50% and 70%. Designed for low-voltage applications with undervoltage lockout thresholds of 8.2V (on) and 7.6V (off). Available in SOP-8 (SOIC-8) and DIP-8 packages.

Features

AI Translation
  • Current mode operation, output switching frequency up to 500KHz.
  • Adjustable output deadtime from 50% to 70%.
  • Automatic feed-forward compensation.
  • Latching PWM for cycle-by-cycle current limiting.
  • Internally trimmed reference with undervoltage lockout.
  • High-current totem-pole output.
  • Input undervoltage lockout with hysteresis.
  • Low startup current (<0.5mA).