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TDSEMIC UC3843-TDRoHS

Manufacturer
TDSEMICAsian Brands
MPN
UC3843-TD
LCSC Part #
C42422132
Packaging
SOP-8
Customer #
Key Attributes
Current-mode Pulse Width Modulator
Datasheetpdf iconTDSEMIC UC3843-TD
In-Stock: 4,535
4,535 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
5+$ 0.1018$ 0.51
50+$ 0.0815$ 4.08
150+$ 0.0713$ 10.70
500+$ 0.0637$ 31.85
2,500+$ 0.0576$ 144.00
5,000+$ 0.0546$ 273.00
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
TopologyFlyback;Forward
Operating Voltage30V
Switch tube (built-in/external)External
Output Current1A
Quiescent Current12mA
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Additional Information

TypeDetails
Minimum5
Multiple5
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

UC3843 is a constant-frequency current-mode PWM controller designed for off-line and DC-DC switching power supply applications. It integrates a temperature-compensated precision reference, an adjustable oscillator for precise duty cycle control, a high-gain error amplifier, a current sense comparator, a high-current totem-pole output stage suitable for driving power MOSFETs, as well as protection circuits including single-cycle hysteretic current limiting, undervoltage lockout, adjustable dead time, and single-pulse counting latch. The UC3843 is available in DIP8 or SOP8 packages.

Features

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