TPS54618C-Q1数据手册TI中文资料规格书

描述 Description

The TPS54618C-Q1 device is a full-featured 6-V, 6-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS54618C-Q1 enables small designs by integrating the MOSFETs, implementing current-mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small, 3-mm × 3-mm, thermally-enhanced WQFN package.

The TPS54618C-Q1 provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.

Efficiency is maximized through the integrated 12-mΩ MOSFETs and 515-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 5.5-µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output-voltage start-up ramp is controlled by the slow-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage.

Frequency foldback and thermal shutdown protect the device during an overcurrent condition.

特性 Features

• AEC-Q100 qualified for automotive applications:
• Temperature grade 1: -40°C to +125°C, TA

• Functional Safety-Capable
• Documentation available to aid functional safety system design

• Two 12-mΩ (typical) MOSFETs for high efficiency at 6-A loads
• 300-kHz to 2-MHz switching frequency
• 0.8-V ±1% Voltage reference over temperature (–40°C to +150°C)
• Synchronizes to external clock
• Adjustable slow start and sequencing
• UV and OV power-good output
• New product available: TPS62816-Q1, 6-V step-down converter in 2-mm x 3-mm QFN package with wettable flanks
• Thermally-enhanced 3-mm × 3-mm, 16-pin WQFN package