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LMZ31704 Datasheet(PDF) 1 Page - Texas Instruments |
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LMZ31704 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 33 page LMZ31704 PWRGD SENSE+ VOUT PVIN VIN INH/UVLO RT/CLK VADJ SS/TR STSEL AGND PGND CIN RSET COUT VOUT VIN RRT SYNC_OUT ISHARE LMZ31704 www.ti.com SLVSBV8A – JUNE 2013 – REVISED AUGUST 2013 4A SIMPLE SWITCHER® Power Module with 2.95V-17V Input and Current Sharing in QFN Package Check for Samples: LMZ31704 1 FEATURES DESCRIPTION The LMZ31704 SIMPLE SWITCHER power module 23 • Complete Integrated Power Solution Allows is an easy-to-use integrated power solution that Small Footprint, Low-Profile Design combines a 4-A DC/DC converter with power • 10mm x 10mm x 4.3mm package MOSFETs, a shielded inductor, and passives into a – Pin Compatible with LMZ31710 & LMZ31707 low profile, QFN package. This total power solution allows as few as three external components and • Efficiencies Up To 95% eliminates the loop compensation and magnetics part • Eco-mode™ / Light Load Efficiency (LLE) selection process. • Wide-Output Voltage Adjust The 10x10x4.3 mm QFN package is easy to solder 0.6 V to 5.5 V, with 1% Reference Accuracy onto a printed circuit board and allows a compact • Supports Parallel Operation for Higher Current point-of-load design. Achieves greater than 95% efficiency and excellent power dissipation capability • Optional Split Power Rail Allows with a thermal impedance of 13.3°C/W. The Input Voltages Down to 2.95 V LMZ31704 offers the flexibility and the feature-set of • Adjustable Switching Frequency a discrete point-of-load design and is ideal for (200 kHz to 1.2 MHz) powering a wide range of ICs and systems. • Synchronizes to an External Clock Advanced packaging technology affords a robust and reliable power solution compatible with standard QFN • Provides 180° out-of-phase Clock Signal mounting and testing techniques. • Adjustable Slow-Start • Output Voltage Sequencing / Tracking Figure 1. SIMPLIFIED APPLICATION • Power Good Output • Programmable Undervoltage Lockout (UVLO) • Over-Current & Over-Temperature Protection • Pre-bias Output Start-up • Operating Temperature Range: –40°C to 85°C • Enhanced Thermal Performance: 13.3°C/W • Meets EN55022 Class B Emissions – Integrated Shielded Inductor APPLICATIONS • Broadband & Communications Infrastructure • Automated Test and Medical Equipment • Compact PCI / PCI Express / PXI Express • DSP and FPGA Point-of-Load Applications This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 Eco-mode is a trademark of Texas Instruments. 3 SIMPLE SWITCHER is a registered trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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