· Wide Input Voltage Ra🎃nge from 4V to 🤪36V
· Programmable VOUT Range from 0.8V to 28V
· COT Current Mode Control
· Integrated 6V/2.4A Peak Gate Drive
· Adjust🍰able Cycle-by-Cycle Current Limit by ILIM
· Adjustable Outpu🥃t Average Current Limit
· Select CC Mode or Hiccup 🌟Protection for Average Current🧸 Limit
· Adjustable Frequency: 125kHz~1MHz
·&nbཧsp;External Soft-Start Limits the Input Inrush Curreꦫnt
· Internal PMOS Load Switch Driver
· Selectable FCCM or DCM ෴with Pulse Skipping&n༒bsp;
· 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 a♉vailable in compact QFN3x3-20.
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