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UC2842BNMOTN/a114avaiHIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC3843BVDMOTN/a34avaiHigh Performance Current Mode Controller
UC3842BD1MOTN/a15avaiHIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC3842BVDMOT/ONN/a247avaiHIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC3842BNMOTOROLAN/a175avaiHIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC3842BVDONN/a1219avaiHIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC3842BVDMOTN/a2435avaiHIGH PERFORMANCE CURRENT MODE CONTROLLERS


UC3842BVD ,HIGH PERFORMANCE CURRENT MODE CONTROLLERSELECTRICAL CHARACTERISTICS (V = 15 V [Note 2], R = 10 k, C = 3.3 nF. For typical values T = 25°C, f ..
UC3842D ,SMPS ControllerMaximum Ratings.. 612 Device and Documentation Support........ 357.2 ESD Ratings........ 612.1 Rela ..
UC3842D8 ,Current-Mode PWM ControllerTable of Contents8.4 Device Functional Modes.... 201
UC3842D8TR ,Current-Mode PWM ControllerFeatures... 19 Application and Implementation...... 212 Applications..... 19.1 Application Informat ..
UC3842J ,Current-Mode PWM Controller
UC3842J ,Current-Mode PWM Controller
UMX1 N TN , General purpose transistors (dual transistors)
UMX1/N/TN , General purpose transistors (dual transistors)
UMX18N , General purpose transistors (dual transistors)
UMX1N TN , General purpose transistors (dual transistors)
UMX1N TN , General purpose transistors (dual transistors)
UMX1NTN , General purpose transistors (dual transistors)


UC2842BN-UC3842BD1-UC3842BN-UC3842BVD-UC3843BVD
HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Order this document by UC3842B/D
ORDERING INFORMATION
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The UC3842B, UC3843B series are high performance fixed frequency
current mode controllers. They are specifically designed for Off–Line and
dc–to–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.
These devices are available in an 8–pin dual–in–line and surface mount
(SO–8) plastic package as well as the 14–pin plastic surface mount (SO–14).
The SO–14 package has separate power and ground pins for the totem pole
output stage.
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). 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
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