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TMI3455

Wide Input Range Synchronous Buck Controller With I2C & Load Switch Driver Control

数据表

TMI3455_DS_EN_V0.6

产品详细信息

特性

说明

· Wide Input Voltage Range from 4V to 36V

· Programmable V_OUT Range from 0.8V to 28V

· COT Current Mode Control

· Integrated 6V/2.4A Peak Gate Drive

· Adjustable Cycle-by-Cycle Current Limit by ILIM

· Adjustable Output Average Current Limit

· Select CC Mode or Hiccup Protection for Average Current Limit

· Adjustable Frequency: 125kHz~1MHz

· External Soft-Start Limits the Input Inrush Current

· Internal PMOS Load Switch Driver

· Selectable FCCM or DCM with Pulse Skipping

· Cable Impedance Compensation

· Input Under-Voltage Lockout

· Output Short Protection with Hiccup Mode

· Output Over-Voltage Protection by FB

· Thermal Shutdown

· QFN-20 Package, 3mm×3mm×0.75mm;

The TMI3455 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 28V with 20mV per step. It also features an adjustable soft-start function and offers protection features including input UVLO, cycle-by-cycle current limit, output average current limit 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 TMI3455 integrates an I²C compatible interface for output voltage setting, average current limit setting, cable compensation etc.
The TMI3455 is available in compact QFN3x3-20.