Update: 28 September, 2023
The TL284x and TL384x series of control integrated circuits provide the features necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes with a minimum number of external components. Some of the internally implemented circuits are an undervoltage lockout (UVLO) with a start-up current of less than 1 mA and a precision reference trimmed for accuracy at the error amplifier input. Other internal circuits include logic for latched operation, a pulse-width modulation (PWM) comparator (that 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 when it is in the off state. Major differences between members of these series are the UVLO thresholds and maximum duty-cycle ranges.
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MD5 Checksum: 03503BCAAE986FC7E2744C9A259367E5
Publication date: 09 May, 2012
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PDF Link: TEXAS INSTRUMENTS TL284x TL384x CURRENT-MODE PWM CONTROLLERShandbook PDF