Press Center
 
Home About us Products Support Quality & Certification Career Contact us
• Power Management
    Linear Regulators
    Low Dropout Linear Regulators
    DDR Termination Regulators
    Shunt Reference Regulators
    Step Down Switching Regulators
    Switching Regulator
    Step-Up DC-DC Converter
    PWM Controller
    White LED Driver
    Supervisory Circuit
    Voltage Detection and System R
    USB Power Switch
    Power Factor Control
    Li-Battery Protection or Charg
    FET Bias Controllers
    Combo IC
    Inverting DC-DC Converter
• Amplifier / Comparator
    Audio Amplifiers
    Operational Amplifier
    Voltage Comparator
• Analog Switches
    Video Signal Switch
    Analog Multiplexers, Demultipl
• Hall ICs
• Special Application ICs
    Motor Controller IC
    Interface and Driver Circuit
    Telecommunication Circuit
    Melody IC
    Alarm /Sound Generator IC
    Remote Controller IC
    Television Circuit
    Leakage Current Detector
    Automotive IC
    A-D or D-A Converters
    Miscellaneous
    Radio and Cassette Recorder Ci
    Timer
    Mouse&Keyboard Controller
    Transient Voltage Suppressors
    Sense Monitor
    Video Filter
    ZCB snubber
• Logic
• TRANSISTORs
• MOSFETs
    JFET
    Power Mosfet
• TRIACs
• SCRs
• DIODEs
 
Home > PWM Controller
UC2842B 2843B Datasheet

HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS  
 



DESCRIPTION
 

The UTC UC2842B/2843B are high performance fixed

frequency current mode controllers that specifically designed for

Off-Line and DC to DC converter applications with minimal external

parts count.

The differences between UC2842B and UC2843B are the

under-voltage lockout thresholds. The UC2842B ideally suited to

off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF),

and UC2843B has UVLO thresholds of 8.4V(ON) and 7.6V(OFF) for

lower voltage applications.

 

FEATURES

 

* Operation output switching frequency up to 500 kHz

* Automatic feed forward compensation

* Latching PWM for cycle-by-cycle current limiting

* High current totem pole output

* Internally trimmed reference with under voltage lockout

* UVLO with hysteresis

* Low startup and operating current

About us  |  Products  |  Contact us
Copyright 2011 UTC All received