The TPS54240-Q1 device is a 42-V, 2.5-A, step-down regulator with an integrated high-side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no-load, regulated-output supply current to 138 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA when the enable pin is low.
●Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage start-up ramp is controlled by the slow-start pin that can also be configured for sequencing/tracking. An open-drain power-good signal indicates the output is within 94% to 107% of its nominal voltage.
●A wide switching-frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the part during an overload condition.
●The TPS54240-Q1 is available in a 10-pin thermally enhanced MSOP PowerPAD package.
● Qualified for Automotive Applications
● AEC Q100 Qualified With the Following Results:
● Device Temperature Grade 1:
●–40°C to 125°C Ambient Operating
●Temperature Range
● Device HBM ESD Classification Level H2
● Device CDM ESD Classification Level C6
● 3.5-V to 42-V Input Voltage Range
● 200-mΩ High-Side MOSFET
● High Efficiency at Light Loads With a
●Pulse-Skipping Eco-mode Control Scheme
● 138-µA Operating Quiescent Current
● 1.3-µA Shutdown Current
● 100-kHz to 2.5-MHz Switching Frequency
● Synchronizes to External Clock
● Adjustable Slow Start/Sequencing
● UV and OV Power-Good Output
● Adjustable UVLO Voltage and Hysteresis
● 0.8-V Internal Voltage Reference
● MSOP10 PowerPAD Package
● Supported by SwitcherPro Software Tool
●(http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
● For SWIFT Documentation, See the TI Web site at http://www.ti.com/swift
