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Home > Semiconductors > Power Management ICs > Switching Converters, Regulators & Controllers > UNITRODE / TI UC3844N Current Mode PWM Controller 1A 500kHz 8-Pin PDIP

UNITRODE / TI UC3844N Current Mode PWM Controller 1A 500kHz 8-Pin PDIP

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Quick Overview

Unitrode - Texas Instruments Uc3844N IC Pulse Width Modulation (PWM) Controller IC; Output Current Max:1000mA; Frequency:450kHz; No. of Pins:8; Control Mode:Current; Duty Cycle Max:48%; Leaded Process Compatible:Yes; Number of PWM Outputs:1

UNITRODE / TI UC3844N Current Mode PWM Controller 1A 500kHz 8-Pin PDIP

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UC3844N Texas Instruments Current Mode PWM Controller 1A 8-Pin PDIP Tube, Through Hole

The UC3844N is a Current Mode PWM Controller optimized for off-line and DC to DC converters. This device provides the necessary features to implement off-line or DC-to-DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-channel MOSFETs, is low in the off state.
  • Optimized for off-line and DC to DC converters
  • Low start up current (<1mA)
  • Automatic feed forward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load response characteristics
  • Under-voltage lockout with hysteresis
  • Double pulse suppression
  • High current totem pole output
  • Internally trimmed bandgap reference
  • Green product and no Sb/Br


Power Management

Additional Information

Manufacturer: Texas Instruments
Product Category: Switching Controllers
Brand: Texas Instruments
Topology: Buck, Boost, Flyback, Forward
Number of Outputs: 1 Output
Switching Frequency: 450 kHz
Duty Cycle - Max: 50 %
Output Current: 1000 mA
Maximum Operating Temperature: + 70 C
Mounting Style: Through Hole
Package / Case: PDIP-8
Series: UC3844
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