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TPS54334 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54334 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 37 page VIN PGOOD SW BOOT VIN VOUT L1 6.8 H µ 1 8 9 2 10 TPS54334DRC VOUT= 3.3 V C6 22 F µ C1 10µF VIN=4.2 V to 24 V U1 C2 0.1µF C8 200 pF R1 221 k R2 84.5 k R4 51.1 R5 31.6 k R6 10 k VDD C7 22 F µ C5 150 pF C4 0.015 F µ R3 2.05 k R7 100 k GND COMP 6 7 C3 0.1 F µ VSENSE EN 3,4,5 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54334 SLUSC26 – MAY 2015 TPS54334 4.2-V to 28-V Input Voltage, 3-A Output Current Synchronous SWIFT™ Step-Down Voltage Converter 1 Features 3 Description The TPS54334 is a 28-V, 3-A, low quiescent supply 1 • Two 128m Ω/84mΩ MOSFETs for 3A Continuous current (IQ), synchronous monolithic buck converter Output Current with integrated MOSFETs. • Power Good The TPS54334 enables small designs by integrating • Low 2 µA Shutdown Quiescent Current the MOSFETs and implementing current mode • 0.8 V Internal Voltage Reference with ±1.5% control to reduce external component count. Accuracy Over Temperature Efficiency is maximized through the integrated • Fixed-Frequency Current Mode Control 128m Ω/84mΩ MOSFETs, low quiescent supply • Pulse Skipping Boosts Efficiency at Light Loads current and pulse skipping at light loads. Using the enable pin, shutdown supply current is reduced to • Overcurrent Protection for Both MOSFETs with 2 µA by entering a shutdown mode. Hiccup Mode for Severe Fault Conditions • Thermal and Overvoltage Transient Protection The TPS54334 provides accurate regulation for a variety of loads with an accurate 1.5% voltage • Available in Easy-to-Use 8-Pin SOIC reference over temperature. PowerPAD™ and 10-Pin SON Cycle by cycle current limiting on the high-side fet • Monotonic Start-Up into Pre-biased Outputs protects the TPS54334 in overload situations and is enhanced by a low-side sourcing current limit which 2 Applications prevents current runaway. There is also a low-side • Consumer Applications such as a Digital TV sinking current limit which turns off the low-side (DTV), Set Top Box (STB, DVD/Blu-ray Player), MOSFET to prevent excessive reverse current. LCD Display, CPE (Cable Modem, WiFi Router), Hiccup protection will be triggered if the overcurrent condition has persisted for longer than the preset DLP Projectors, Smart Meters time. Thermal hiccup protection disables the part • Battery Chargers when die temperature exceeds thermal shutdown • Industrial and Car Audio Power Supplies temperature and enables the part again after the • 5V,12 and 24V Distributed Power Bus Supply built-in thermal hiccup time Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SO (8 Pin) 4.89 mm × 3.90 mm TPS54334 VSON (10 Pin) 3.0 mm × 3.0 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. 4 Simplified Schematic 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. |
Similar Part No. - TPS54334_15 |
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Similar Description - TPS54334_15 |
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