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TDSEMIC UC3842-TDRoHS

Manufacturer
TDSEMICAsian Brands
MPN
UC3842-TD
LCSC Part #
C42422130
Packaging
SOP-8
Customer #
Key Attributes
Current-mode Pulse Width Modulator
Datasheetpdf iconTDSEMIC UC3842-TD
In-Stock: 8,030
8,030 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
5+$ 0.087$ 0.44
50+$ 0.0766$ 3.83
150+$ 0.0713$ 10.70
500+$ 0.0674$ 33.70
2,500+$ 0.0643$ 160.75
5,000+$ 0.0627$ 313.50
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerTDSEMIC
PackagingSOP-8
Operating Temperature0℃~+70℃@(TA)
Frequency - Switching47kHz~57kHz
Number of Outputs1
FeaturesCycle-by-cycle current limiting;Overcurrent Protection;External compensation
TopologyFlyback;Boost
Output TypeAdjustable
Operating Voltage10V~30V
Switch tube (built-in/external)External
Output Current1A
Output Voltage8V~30V
Quiescent Current12mA
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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 reference voltage, 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-per-cycle latch protection. The device is available in DIP8 and SOP8 packages.

Features

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