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TPS54341 Dataheets PDF



Part Number TPS54341
Manufacturers Texas Instruments
Logo Texas Instruments
Description Step Down DC-DC Converter
Datasheet TPS54341 DatasheetTPS54341 Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54341 SLVSC61A – NOVEMBER 2013 – REVISED OCTOBER 2016 TPS54341 4.5-V to 42-V Input, 3.5-A Step-Down DC-DC Converter With Soft-Start And Eco-Mode™ 1 Features •1 High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropou.

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54341 SLVSC61A – NOVEMBER 2013 – REVISED OCTOBER 2016 TPS54341 4.5-V to 42-V Input, 3.5-A Step-Down DC-DC Converter With Soft-Start And Eco-Mode™ 1 Features •1 High Efficiency at Light Loads with Pulse Skipping Eco-mode™ • 87-mΩ High-Side MOSFET • 152-μA Operating Quiescent Current and 2-μA Shutdown Current • 100-kHz to 2.5-MHz Adjustable Switching Frequency • Synchronizes to External Clock • Low Dropout at Light Loads with Integrated BOOT Recharge FET • Adjustable UVLO Voltage and Hysteresis • UV and OV Power-Good Output • Adjustable Soft-Start and Sequencing • 0.8-V 1% Internal Voltage Reference • 10-Pin WSON with Thermal Pad Package • –40°C to 150°C TJ Operating Range • Supported by WEBENCH® Software Tool 2 Applications • Industrial Automation and Motor Control • Vehicle Accessories: GPS and Entertainment (see Creating GSM/GRPS Power Supply from TPS54260, SLVA412) • USB-Dedicated Charging Ports and Battery Chargers (see Creating a Universal Car Charger for USB devices From the TPS54240 and TPS2511, SLVA464) • 12-V and 24-V Industrial, Automotive and Communications Power Systems 3 Description The TPS54341 device is a 42-V, 3.5-A step-down regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 45 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 152 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 increase using an external resistor divider at the enable pin. The output voltage startup ramp is controlled by the soft start pin that can also be configured for sequencing/tracking. An open-drain power-good signal indicates the output is within 93% to 106% of the nominal voltage. A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown protects internal and external components during an overload condition. The TPS54341 device is available in a 10-pin 4-mm × 4-mm WSON package. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS54341 WSON (10) 4.00 mm × 4.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic VIN VIN PWRGD TPS54341 EN BOOT RT/CLK SS/TR SW VOUT COMP FB GND Copyright © 2016, Texas Instruments Incorporated Efficiency (%) Efficiency vs Load Current 100 36 V to 12 V 95 90 85 12 V to 3.3 V 80 12 V to 5 V 75 70 65 VOUT = 12 V, fsw = 620 kHz, VOUT = 5 V and 3.3 V, f sw = 400 kHz 60 0 0.5 1 1.5 2 2.5 3 3.5 IO - Output Current (A) C099 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. TPS54341 SLVSC61A – NOVEMBER 2013 – REVISED OCTOBER 2016 www.ti.com Table of Contents 1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Pin Configuration and Functions ......................... 3 6 Specifications......................................................... 4 6.1 Absolute Maximum Ratings ...................................... 4 6.2 ESD Ratings.............................................................. 4 6.3 Recommended Operating Conditions ...................... 4 6.4 Thermal Information .................................................. 4 6.5 Electrical Characteristics........................................... 5 6.6 Typical Characteristics .............................................. 7 7 Detailed Description ............................................ 12 7.1 Overview ................................................................. 12 7.2 Functional Block Diagram ....................................... 13 7.3 Feature Description................................................. 13 7.4 Device Functional Modes........................................ 27 8 Application and Implementation ........................ 28 8.1 Application Information .......................................... 28 8.2 Typical Application .................................................. 28 9 Power Supply Recommendations...................... 41 10 Layout................................................................... 42 10.1 Layout Guidelines ................................................. 42 10.2 Layout Example .................................................... 42 11 Device and.


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