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HGSEMI UC3842M/TR product image
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HGSEMI UC3842M/TRRoHS

Manufacturer
HGSEMIAsian Brands
MPN
UC3842M/TR
LCSC Part #
C434474
Packaging
SOP-8
Customer #
Key Attributes
Current Mode PWM Controller
Datasheetpdf iconHGSEMI UC3842M/TR
In-Stock: 1,800
1,800 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
5+$ 0.1594$ 0.80
50+$ 0.1252$ 6.26
150+$ 0.1105$ 16.58
500+$ 0.0922$ 46.10
2,500+$ 0.084$ 210.00
5,000+$ 0.0792$ 396.00
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
ManufacturerHGSEMI
PackagingSOP-8
Operating Temperature0℃~+70℃
Frequency - Switching50kHz~500kHz
Output Current1A
Pd - Power Dissipation1W
Voltage - Breakdown-
Voltage - Supply12V~25V
TopologyFlyback
FeaturesUnder-voltage lockout;Under Voltage Protection;Over Current Protection
Output Voltage-
Duty Cycle(Max)97%
Working ModePWM Modulation
Feedback SystemPrimary-side feedback
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Additional Information

TypeDetails
Minimum5
Multiple5
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

UC3842 is a fixed-frequency current-mode PWM controller designed for off-line and DC-DC switching power supply applications. It integrates a temperature-compensated precision voltage reference, an adjustable oscillator for precise duty cycle control, a high-gain error amplifier, a current sensing comparator, and a high-current totem-pole output stage suitable for driving power MOSFETs. Additional features include cycle-by-cycle hysteretic current limiting, undervoltage lockout (UVLO), adjustable dead time, and single-pulse metering latch protection. The device is available in DIP8 and SOP8 packages.

Features

AI Translation
  • Low startup current (< 0.5 mA)
  • Automatic feed-forward compensation
  • Undervoltage lockout with hysteresis
  • Maximum duty cycle limiting
  • Operating frequency up to 500 kHz