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GREENMICRO UC3842BDRoHS

Manufacturer
GREENMICROAsian Brands
MPN
UC3842BD
LCSC Part #
C53055744
Packaging
DIP-8
Customer #
Key Attributes
49kHz~55kHz 1A 1W 10V~30V Boost DIP-8 AC DC Converters, Offline Switchers RoHS
Datasheetpdf iconGREENMICRO UC3842BD
In-Stock: 1,795
1,795 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
5+$ 0.0919$ 0.46
50+$ 0.0732$ 3.66
150+$ 0.0639$ 9.59
500+$ 0.0569$ 28.45
2,000+$ 0.0512$ 102.40
4,000+$ 0.0484$ 193.60
Standard Packaging50/Full Tube
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/AC DC Converters, Offline Switchers
ManufacturerGREENMICRO
PackagingDIP-8
Operating Temperature0℃~+70℃
Frequency - Switching49kHz~55kHz
Output Current1A
Pd - Power Dissipation1W
Voltage - Breakdown-
Voltage - Supply10V~30V
TopologyBoost
FeaturesOver Current Protection;Under Voltage Protection
Output Voltage-
Duty Cycle(Max)97%
Feedback System-
Working Mode-
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Additional Information

TypeDetails
Minimum5
Multiple5
Standard Packaging50
Sales UnitPiece

Introduction

AI Translation

The 3842 is a high-performance fixed-frequency current-mode controller designed for off-line and DC-DC converter applications, offering designers a solution with minimal component count and low cost. This IC integrates an oscillator trimmed for precise duty cycle control, a temperature-compensated reference voltage, a high-gain error amplifier, a current-sensing comparator, and a high-current totem-pole output stage suitable for driving power MOSFETs. It also incorporates multiple protection features, including input undervoltage lockout (UVLO), cycle-by-cycle current limiting, programmable output dead time, and a latch for single-pulse metering.

Features

AI Translation
  • Undervoltage lockout circuit
  • Low startup current (<0.3mA)
  • Stable internal bandgap voltage reference
  • High-current totem-pole output (drive current up to 1A)
  • Operating frequency up to 500kHz
  • Automatic feed-forward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load transient response

Applications

AI Translation
  • Inverter power supplies
  • High-power high-frequency switching power supplies
  • DC pulse-width modulation speed control systems
  • UPS power supplies
  • DC/DC converters
  • High-power chargers