Part Number
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HY3843 |
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...
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Datasheet
|
HY3843
|
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 OFFâLine 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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