UC2843AD ,Current Mode PWMsThermal CharacteristicsD Suffix, Plastic PackageMaximum Power Dissipation @ T = 25°C P 862 mWA DThe ..
UC2843AD1 ,Linear High-Performance Current Mode ControllerUC284XAUC384XAHIGH PERFORMANCE CURRENT MODE PWM CONTROLLERNOT FOR NEW DESIGN1
UC2843AD1013TR ,HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERBlock Diagram (toggle flip flop used only in UC3844A and UC3845A)7ViUVLO34V85VVREF5 S/RREFGROUND 5V ..
UC2843AD8 ,Current Mode PWM ControllerSupport &Product Order Tools &TechnicalCommunityFolder Now Documents SoftwareUC1842A,UC1843A,UC1844 ..
UC2843AD8G4 ,Current Mode PWM Controller 8-SOIC -40 to 85Features... 1 8 Application and Implementation...... 148.1 Application Information........ 142 Appl ..
UC2843AD8TR ,Current Mode PWM Controllerfeatures: startup current• Automatic Feedforward Compensationis less than 0.5 mA, oscillator discha ..
UM4407 , P-Ch 30V Fast Switching MOSFETs
UM4953 , Dual P-Ch 30V Fast Switching MOSFETs
UM5112 , 5-7.5 Watt SMD DC-DC Converters
UM5K1 N , Small switching (30V, 0.1A)
UM5K1 NTR , 2.5V Drive NchNch MOS FET
UM5K1 N TR , 2.5V Drive NchNch MOS FET
UC2842AN-UC2843AD-UC2843AN
HIGH PERFORMANCE CURRENT MODE CONTROLLERS
ORDERING INFORMATION
Order this document by UC3842A/D- -
The UC3842A, UC3843A series of high performance fixed frequency
current mode controllers 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 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 UCX842A has UYLO thresholds of 16 V (on) and 10 V (off), ideally
suited for off–line converters. The UCX843A is tailored for lower voltage
applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off). Trimmed Oscillator Discharge Current for Precise Duty Cycle Control 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 Direct Interface with Motorola SENSEFET Products
