See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

DDA | 8

Temp:

Q (-40 to 125)

ECO Plan:

Green (RoHS & no Sb/Br)

TPS54540QDDARQ1


42V, 5A, Step-Down Regulator with Integrated High Side MOSFET

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Qty.Price
1 - 9 $ 4.52
10 - 24 $ 4.07
25 - 99 $ 3.80
100 - 249 $ 3.41
250 - 499 $ 3.18
500 - 749 $ 2.77
750 - 999 $ 2.40
1000 - 9999 $ 2.07

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Texas Instruments TPS54540QDDARQ1

The TPS54540-Q1 device is a 42-V, 5-A, step-down regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 65 V 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 146 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V 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.

The TPS54540-Q1 is available in an 8-pin thermally-enhanced HSOP PowerPAD package.

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