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HY3842

Part Number	HY3842
Manufacturer	Hooyi
Description	(HY3842 / HY3845) PWM controller
Published	Mar 15, 2014
Detailed Description	HY3842/43/44/45 DESCRIPTION The HY3842D-N/3843D-N/3844D-N/3845D-N, are fixed frequency current mode PWM controller. They...
Datasheet	HY3842 PDF File

Overview

HY3842/43/44/45 DESCRIPTION The HY3842D-N/3843D-N/3844D-N/3845D-N, are fixed frequency current mode PWM controller.
They are specially designed for OFF−Line and DC to DC converter applications with a minimal external components.
Internally implemented circuits include 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.
Protection circuitry includes built under voltage lockout and current limiting.
The HY3842D-N, HY3844D-N, have UVLO thresholds of 16 V (on) and 10 V (off).
The corresponding thresholds for the HY3843D-N/384...

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