MAX1663

Serial to Parallel Parallel to Serial Converters and Load Switch Controllers with SMBus Interface

SMBus Interfaced Controller Simplifies Power Plane Switching


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Description

The MAX1661/MAX1662/MAX1663 serial-to-parallel/parallel-to-serial converters are intended to control external power MOSFETs in power-plane switching applications. These small, low-cost devices can be used on a system motherboard to control point-of-load switching from a 2-wire SMBus™ serial interface. Each device has three high-voltage open-drain outputs that double as TTL-level logic inputs, giving them bidirectional capabilities. The I/O pins can withstand +28V, so they can control battery voltage-distribution switches in notebook computers.

The MAX1661 is intended for driving N-channel MOSFETs and its outputs are low upon power-up. The MAX1662/MAX1663 are intended for P-channel MOSFETs, and their outputs are high-impedance upon power-up. This ensures that the MOSFETs are off at power-up, so the system can enforce power-plane sequencing.

The active-low SMBSUS control input selects control data between two separate data registers. This feature allows the system to select between two different power-plane configurations asynchronously, eliminating latencies introduced by the serial bus. Other features include thermal-overload and overcurrent protection, ultra-low supply current, and both hardware and software interrupt capabilities. These devices are available in the space-saving 10-pin µMAX® package.
MAX1661, MAX1662, MAX1663: Typical Operating Circuits MAX1661, MAX1662, MAX1663: Typical Operating Circuits Enlarge+

Key Features

  • Performs Serial-to-Parallel and Parallel-to-Serial Conversions
  • Three General-Purpose Digital Input/Output Pins (withstand +28V)
  • SMBus 2-Wire Serial Interface
  • Supports SMBSUS-bar Asynchronous Suspend Mode
  • 3µA Supply Current
  • +2.7V to +5.5V Supply Range
  • Space-Saving, Low-Cost 10-Pin µMAX Package

Applications/Uses

  • Computers: Desktop, Workstation, Server
  • Notebook and Subnotebook Computers
  • Point-of-Load Power-Bus Switching
  • Power-Plane Switching
  • Smart Battery Packs/Chargers

Technical Documents

App Note 3336

Quality and Environmental Data

Request Reliability Report for: MAX1663 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Type ID PDF Title
App Note 3336

Belle Isle 2020
05/29/2020 - 05/31/2020, Detroit, MI
2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

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