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SG1842 - Current Mode PWM Controller

Download the SG1842 datasheet PDF (SG1843 included). The manufacturer datasheet provides complete specifications, pinout details, electrical characteristics, and typical applications for current mode pwm controller.

Description

The SG1842/43 family of control IC's provides all the necessary

Features

  • to implement off-line fixed frequency, current-mode switching power supplies with a minimum number of external components. Current-mode architecture demonstrates improved line regulation, improved load regulation, pulse-bypulse current limiting and inherent protection of the power supply output switch. The bandgap reference is trimmed to ±1% over temperature. Oscillator discharge current is trimmed to less than ±10%. The SG1842/43 has under-voltage lockout, current limiting circuitry and start-u.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SG1843-MicrosemiCorporation.pdf) that lists specifications for multiple related part numbers.

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Full PDF Text Transcription

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SG1842/SG1843 Current Mode PWM Controller Description The SG1842/43 family of control IC's provides all the necessary features to implement off-line fixed frequency, current-mode switching power supplies with a minimum number of external components. Current-mode architecture demonstrates improved line regulation, improved load regulation, pulse-bypulse current limiting and inherent protection of the power supply output switch. The bandgap reference is trimmed to ±1% over temperature. Oscillator discharge current is trimmed to less than ±10%. The SG1842/43 has under-voltage lockout, current limiting circuitry and start-up current of less than 1mA. The totem-pole output is optimized to drive the gate of a power MOSFET.
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