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Simplified USB Type-C Cable e-Marker Chip CH251

Overview

CH251 is a simplified version of USB Type-C cable e-Marker chip, support USB Type-C 2.1 standard and USB PD 3.1 standard, can be used for Type-C five-core cable related applications. The CH251 chip integrates VCONN diode, Ra resistor, VBUS power supply unit and high-voltage LDO internally, which can be operated in a single chip without peripheral devices. The CH251 ships with a default configuration programmed in internally, and supports chip, terminal or finished cable to update the configuration data through the Type-C port for programming. In addition to the default configuration, each piece of CH251 also supports up to 5 times of configuration data updating and writing, and has a data lock function. The factory default configuration data of CH251 has a variety of options. The VBUS of CH251L supports up to 22V input voltage power supply and can be used for 100W (20V5A) power Type-C five-core cable; CH251X, compared to CH251L, VBUS supports up to 52V input voltage power supply and can be used for 240W (48V5A) power Type-C five-core cable.

Features

  • VCONN supports 2.7V to 22V input voltage
  • CH251X VBUS supports 4.7V to 52V input voltage
  • Support USB Type-C 2.1 standard and USB PD 3.1 standard
  • Integrated VCONN diode and Ra resistor
  • VCONN pin voltage tolerant 25V, CC pins tolerant voltage 28V, VBUS pin tolerant voltage 56V (CH251X)
  • Support configuration data update program
  • Support EPR Mode
  • Support Get_Manufacturer_Info message, manufacturer string configurable

Applications

  • USB Type-C Passive Cable

Package

package

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relation files

file name file content
CH251DS1.PDF eMarker chip CH251 datasheet, CH251 is a simplified version of the eMarker chip, single chip integrated VCONN diode and Ra resistor, support USB Type-C 2.1 standard and USB PD 3.1 standard, VBUS support high-voltage power supply, can be used for Type-C five-core cable related applications.
CH252DS1.PDF CH252 datasheet, CH252 is a USB Type-C cable E-Marker that supports USB Type-C 2.1 standard and USB PD 3.1 standard and can be used for various Type-C cable related applications.CH252 is shipped with a default configuration burned in and supports updating the configuration data of the finished cable via the Type-C interface. Each CH252 supports up to 5 updates of the configuration data in addition to the default configuration and has a data lock function.
CH236DS1.PDF CH236 datasheet. CH236 supports fast charging protocols such as PD3.0/2.0, BC1.2, etc. CH236 supports AC/DC constant voltage loop and constant current loop, and has built-in DC/DC control module, with features of high integration and simplified peripherals.
CH237DS1.PDF CH237 datasheet. Type-A/C dual-port fast charging protocol controller, supports fast charging protocols such as PD3.0/2.0, BC1.2, etc. CH237 supports AC/DC constant voltage loop and constant current loop, with features of high integration and simplified peripherals.