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CS3843B - Off-Line Current Mode PWM Controller

Description

The CS384XB provides all the necessary

Features

  • to implement off-line fixed frequency current-mode control with a minimum number of external components. The family has been optimized for very low start up current (300µA, typ). The CS384XB family incorporates a precision temperature-controlled oscillator with an internally trimmed discharge current to minimize variations in frequency. A precision duty-cycle clamp eliminates the need for an external oscillator when a 50% duty-cycle is used. Duty-cycles of almost 100% are possible. On board logi.

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Datasheet preview – CS3843B

Datasheet Details

Part number CS3843B
Manufacturer Cherry Semiconductor Corporation
File Size 154.65 KB
Description Off-Line Current Mode PWM Controller
Datasheet download datasheet CS3843B Datasheet
Additional preview pages of the CS3843B datasheet.

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Full PDF Text Transcription

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CS3842B/3843B CS3842B/CS3843B Off-Line Current Mode PWM Control Circuit with Very Low Start Up Current Description The CS384XB provides all the necessary features to implement off-line fixed frequency current-mode control with a minimum number of external components. The family has been optimized for very low start up current (300µA, typ). The CS384XB family incorporates a precision temperature-controlled oscillator with an internally trimmed discharge current to minimize variations in frequency. A precision duty-cycle clamp eliminates the need for an external oscillator when a 50% duty-cycle is used. Duty-cycles of almost 100% are possible. On board logic ensures that VREF is stabilized before the output stage is enabled.
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