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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