| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Number of Pins | 8 Pin |
| Case/Package | HSOP-8 |
| Number of Outputs | 1 Output |
| Output Voltage | 0.8V ~ 41.1V |
| Output Current | 5 A |
| Number of Positions | 8 Position |
| Quiescent Current | 146 µA |
| Number of Regulated Outputs | 1 Output |
| Switching Frequency | 2.5 MHz |
| Input Voltage (Max) | 42 V |
| Input Voltage (Min) | 4.5 V |
| Output Voltage (Max) | 41 V |
| Output Voltage (Min) | 800 mV |
| Output Current (Max) | 5 A |
| Operating Temperature (Max) | 125 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Input Voltage | 4.5V ~ 42V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Cut Tape (CT) |
| Operating Temperature | -40℃ ~ 150℃ (TJ) |
The TPS54540QDDAQ1 is a Step-down Regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 65V per ISO 7637. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load supply current to 146µA. Shutdown supply current is reduced to 2µA when the enable pin is pulled low. Undervoltage lockout is internally set at 4.3V but can be increased using an external resistor divider at the enable pin. The output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot. A wide adjustable frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protect internal and external components during an overload condition.
● High-Efficiency at Light loads with pulse-skipping Eco-mode™
● Synchronizes to external clock
● Low dropout at light loads with integrated BOOT recharge FET
● Adjustable UVLO voltage and hysteresis
● Supported by WEBENCH® software tool
● 92mR High-side MOSFET
● 0.8V 1% Internal voltage reference
● Green product and no Sb/Br
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