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SG3843G - BiCMOS Green-Mode PWM Controllers

Download the SG3843G datasheet PDF. This datasheet also covers the SG3842G variant, as both devices belong to the same bicmos green-mode pwm controllers family and are provided as variant models within a single manufacturer datasheet.

General Description

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

Key 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SG3842G-SystemGeneral.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number SG3843G
Manufacturer System General
File Size 239.41 KB
Description BiCMOS Green-Mode PWM Controllers
Datasheet download datasheet SG3843G Datasheet

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Other Datasheets by System General

Part Number Description
SG3842G BiCMOS Green-Mode PWM Controllers
SG3844G BiCMOS Green-Mode PWM Controllers
SG3845G BiCMOS Green-Mode PWM Controllers

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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.