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SG3845G - BiCMOS Green-Mode PWM Controllers

This page provides the datasheet information for the SG3845G, a member of the SG3842G BiCMOS Green-Mode PWM Controllers family.

Description

The SG348xG series of current-mode PWM controllers combines high performance with Green-mode power saving

Features

  • 384x series pin-to-pin compatible Linearly decreasing PWM frequency Burst-mode at low/zero load 5uA start-up current 5mA operating current Vcc over voltage protection Cycle-by-cycle current limiting Zero cross-conduction Slew rate controlled high current totem pole output Fast current sense propagation delay Under voltage lockout (UVLO) with hysteresis.

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Datasheet preview – SG3845G

Datasheet Details

Part number SG3845G
Manufacturer System General
File Size 239.41 KB
Description BiCMOS Green-Mode PWM Controllers
Datasheet download datasheet SG3845G Datasheet
Additional preview pages of the SG3845G datasheet.

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Other Datasheets by System General
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Full PDF Text Transcription

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Product Specification BiCMOS Green-Mode PWM Controllers SG3842G/ 3843G/ 3844G/ 3845G start-up current has been reduced to 5uA, and the minimum operating current has been reduced to 5mA. Each SG384xG has a slew rate controlled high current totem pole output, ideally suited for driving a power MOSFET while keeping EMI low. The current-sense propagation delay is typically 50ns, resulting in significantly more effective constant power protection. During normal operation, a SG384xG controller acts as a fixed frequency PWM controller. The PWM frequency can be easily programmed by changing external RT and CT values. The SG384xG includes two Green-mode functions that dramatically reduce power usage, helping the power supply comply with the latest international power saving guidelines.
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