Features

 Wide Input Voltage Range from 4V to 36V  Programmable VOUT Range from 0.8V to 24V  Peak Current Mode Control  Integrated 6V/3A Peak Gate Drive  Adjustable Cycle-by-Cycle Current Limit by ILIM  Adjustable Frequency: 100kHz~1MHz  External Soft-Start Limits the Input Inrush Current  Internal PMOS Driver for Bypass Mode  Selectable FCCM or DCM with Pulse Skipping  Cable Impedance Compensation  Low Dropout Operation with Maximum Duty  Cycle at 99.5%  I2C Programmable Output Range from 3.0V to  21V in 200mV Per Step  Input Under-Voltage Lockout  Output OCP, SCP, OVP  Thermal Shutdown  QFN-20 Package, 3mm×3mm×0.75mm 

Applications

 USB Power Delivery Supply  Car Charger  USB Dedicated Charging Port   Type-C Docks/Adaptors  Computer Peripherals

Description

The ZCC7200 is a synchronous buck controller mainly  for widely varying input step-down regulator applications. The control method is based upon  current mode control that enables maximum  performance under transient conditions. The output  voltage can be either programmed by the FB pin or  configured by the I2C interface from 3.0V to 21V in  200mV per step. It operates as a Buck mode while  the input voltage is sufficiently greater than the  regulated output voltage and transitions to the bypass mode as the input voltage very approaches the output voltage. It also features an adjustable soft-start  function and offers protection features including input  UVLO, cycle-by-cycle current limit, output overload  protection (OLP) or OVP and thermal shutdown. In  addition, it features selectable Forced Continuous  Conduction Mode (FCCM) or Discontinuous  Conduction Mode (DCM) operation for light load. The ZCC7200 integrates an I2C compatible interface  for bypass mode selecting, output voltage setting, etc. The ZCC7200 is available in compact QFN3x3-20.

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