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onsemi UC3842BVD1G product image
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onsemi UC3842BVD1GRoHS

Manufacturer
onsemi
MPN
UC3842BVD1G
LCSC Part #
C897777
Packaging
SOIC-8
Customer #
Key Attributes
High Performance Current Mode Controllers
Datasheetpdf icononsemi UC3842BVD1G
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Minimum: 1Multiple: 1Sales Unit: Piece
QtyUnit PriceTotal Amount
1+$ 2.1031$ 2.10
10+$ 1.8001$ 18.00
30+$ 1.6112$ 48.34
100+$ 1.4163$ 141.63
500+$ 1.328$ 664.00
1,000+$ 1.2899$ 1289.90
Standard Packaging98/Full Tube

Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/AC DC Converters, Offline Switchers
Manufactureronsemi
PackagingSOIC-8
Operating Temperature-40℃~+105℃
Output Current1A
Frequency - Switching500kHz
Pd - Power Dissipation702mW
Voltage - Supply10V~30V
FeaturesUnder-voltage lockout;Slope compensation;Over Current Protection;Under Voltage Protection
TopologyBoost;Flyback
Output Voltage4.95V~5.05V
Duty Cycle(Max)96%
Working ModePWM Modulation
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Introduction

AI Translation

The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, programmable output deadtime, and a latch for single pulse metering. The UCX842B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off−line converters. The UCX843B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).

Features

AI Translation
  • Trimmed Oscillator for Precise Frequency Control
  • Oscillator Frequency Guaranteed at 250 kHz
  • Current Mode Operation to 500 kHz
  • Automatic Feed Forward Compensation
  • Latching PWM for Cycle−By−Cycle Current Limiting
  • Internally Trimmed Reference with Undervoltage Lockout
  • High Current Totem Pole Output
  • Undervoltage Lockout with Hysteresis
  • Low Startup and Operating Current
  • This is a Pb −Free and Halide−Free Device