TPS54418RTET

TEXAS INSTRUMENTS  TPS54418RTET  直流-直流开关降压逐步递减稳压器, 可调, 2.95V-6V输入, 800mV-4.5V输出, 4A输出, WQFN-16

The is a synchronous step-down Current-mode Converter with two integrated MOSFETs. The TPS54418 device enables small designs by integrating the MOSFETs, implementing current-mode control to reduce external component count, reducing inductor size by enabling up to 2MHz switching frequency. The TPS54418 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference VREF over temperature. Efficiency is maximized through the integrated 30mR MOSFETs and a 350µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2µA by entering a shutdown mode. Undervoltage lockout is internally set at 2.6V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the soft-start pin. An open-drain power good signal indicates the output is within 93 to 107% of its nominal voltage.

.

Synchronizes to external clock

.

Adjustable soft-start/sequencing

.

Ultravoltage and overvoltage power good output

.

Low operating and shutdown quiescent current

.

Safe start-up into pre-biased output

.

Cycle-by-cycle current limit, thermal and frequency fold back protection

.

Two, 30mR typical MOSFETs for high-efficiency at 4A loads

.

0.8V ±1% Voltage reference over temperature

.

Green product and no Sb/Br