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TI TPS54540BQDDARQ1RoHS

Manufacturer
TI
MPN
TPS54540BQDDARQ1
LCSC Part #
C2071531
Packaging
SO-8
Customer #
Key Attributes
4.5V to 42V input, 5A step-down DC/DC converter
Datasheetpdf iconTI TPS54540BQDDARQ1
In-Stock: 55
55 In stock, ships now
Minimum: 1Multiple: 1Sales Unit: Piece
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QtyUnit PriceTotal Amount
1+$ 6.333$ 6.33
10+$ 5.4673$ 54.67
30+$ 4.9401$ 148.20
100+$ 4.4992$ 449.92
Standard Packaging2500/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerTI
PackagingSO-8
Operating Temperature-40℃~+125℃@(TA)
Frequency - Switching2.5MHz
FunctionStep-down type
Number of Outputs1
FeaturesCycle-by-cycle current limiting;Frequency synchronization;Light load efficient mode;External compensation
Output TypeAdjustable
TopologyBuck
Operating Voltage4.5V~42V
Switch tube (built-in/external)Built-in
Output Current5A
Output Voltage800mV~41.1V
Quiescent Current146uA
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Introduction

AI Translation

The TPS54540B-Q1 is a 42V, 5A step-down regulator with an integrated high-side MOSFET. Per ISO 7637, the device can withstand load dump pulses up to 65V. Current mode control provides simple external compensation and flexible component selection. Low-ripple pulse skip mode reduces no-load supply current to 146μA. When the enable pin is pulled low, shutdown supply current drops to 2μA. The UVLO is internally set at 4.3V but can be raised using an external resistor divider on the enable pin. The device internally controls the output voltage startup ramp to manage the startup process and eliminate overshoot. The wide switching frequency range enables optimization of either efficiency or external component size. Output current is cycle-by-cycle limited. Frequency foldback and thermal shutdown protect internal and external components from damage under overload conditions. The TPS54540B-Q1 is available in an 8-pin thermally enhanced HSOP PowerPAD package.

Features

AI Translation
  • Qualified for automotive applications with the following AEC-Q100 results:
  • Device temperature grade 1: ambient operating temperature range of -40°C to 125°C
  • Device HBM ESD classification level H1C
  • Device CDM ESD classification level C3B
  • High efficiency via pulse-skipping Eco-mode™ under light-load conditions
  • Eco-mode™ 92mΩ high-side MOSFET
  • 146μA quiescent operating current and 2μA shutdown current
  • 100kHz to 2.5MHz adjustable switching frequency
  • Synchronization to external clock
  • Low dropout via integrated BOOT recharge FET under light-load conditions
  • Adjustable UVLO voltage and hysteresis
  • 0.8V ±1% internal voltage reference
  • 8-pin HSOP PowerPAD package
  • -40°C to 150°C TJ operating range
  • Supported by WEBENCH software tools

Applications

AI Translation
  • Vehicle accessories: GPS, infotainment systems, ADAS, eCall
  • USB dedicated charging ports and battery chargers
  • Industrial automation and motor control
  • 12V, 24V, and 48V power supply systems for industrial, automotive, and communications applications