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NEX81802DA - Adaptive Synchronous Rectifier Controller

Download the NEX81802DA datasheet PDF. This datasheet also covers the NEX81801DA variant, as both devices belong to the same adaptive synchronous rectifier controller family and are provided as variant models within a single manufacturer datasheet.

Description

The NEX81801DA and NEX81802DA (NEX81801/2DA) are high performance synchronous rectification controllers used in switching mode power supplies.

It supports operation in Discontinuous Conduction Mode (DCM), Continuous Conduction Mode (CCM) and quasi-resonant flyback converters.

Features

  • Supports DCM, CCM, QR operation.
  • Supports up to 800 kHz switching frequency.
  • Standard and logic level MOSFET driving capability.
  • Wide output range down to 0 V with 2-channel VCC supply.
  • No need for auxiliary winding for high-side or low- side rectification.
  • Smart proportional gate driver for fast SR turn-off at CCM.
  • Adjustable turn-on blanking time for increased noise immunity.
  • Proprietary adaptive turn-on detection prevent.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (NEX81801DA-nexperia.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number NEX81802DA
Manufacturer nexperia
File Size 801.79 KB
Description Adaptive Synchronous Rectifier Controller
Datasheet download datasheet NEX81802DA Datasheet

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Other Datasheets by nexperia

Part Number Description
NEX81801DA Adaptive Synchronous Rectifier Controller
NEX81915 Fast turn-off dual synchronous rectifiers (SR) controller
NEX81916 Fast turn-off dual synchronous rectifiers (SR) controller
NEX80601DA Wide Vcc range quasi-resonant flyback controller
NEX80602DA Wide Vcc range quasi-resonant flyback controller

Full PDF Text Transcription

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TSOT23-6 NEX81801DA; NEX81802DA Adaptive Synchronous Rectifier (SR) Controller Rev. 2 — 16 April 2025 Product data sheet 1. General description The NEX81801DA and NEX81802DA (NEX81801/2DA) are high performance synchronous rectification controllers used in switching mode power supplies. It supports operation in Discontinuous Conduction Mode (DCM), Continuous Conduction Mode (CCM) and quasi-resonant flyback converters. The NEX81801/2DA regulates the forward drop voltage of an external synchronous rectifier (SR) MOSFET in two stages. This allows the SR FET to turn off quickly when the VDS becomes positive.
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