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TPS53511RGTR Datasheet(PDF) 1 Page - Texas Instruments |
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TPS53511RGTR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 21 page TPS53511 16 13 15 14 1 2 3 4 VCC VREG5 VO VFB VIN VIN GND SS 5 8 6 7 EN PG PGND PGND 12 11 10 9 SW VBST SW SW UDG-13043 – + VOUT Input Signal Output Signal – + PGND SGND VIN TPS53511 www.ti.com SLUSBG4 – MARCH 2013 4.5-V to 18-V Input, 1.5-A Step-Down Regulator with Integrated Switcher Check for Samples: TPS53511 1 FEATURES APPLICATIONS 2 • Continuous 1.5-A Output Current • Points-of-Load for Server • 4.5-V to 18-V Supply Voltage Range • Distributed Non-Isolated DC-DC Converters for Computing Power System • 2-V to 18-V Conversion Voltage Range • DCAP2™ Mode Control Enables Fast Transient DESCRIPTION Response The TPS53511 is an adaptive on-time D-CAP2™ • Low Output Ripple and Support all MLCC mode synchronous buck converter. The device is Output Capacitor suitable for points-of-load (POL) in computing power • Skip Mode for Light Load Control systems, and provides a cost-effective, low component count, low standby current solution. The • Highly Efficient Integrated FETs Optimized for main control loop for the TPS53511 uses the D- Lower Duty Cycle Applications CAP2™ mode control providing a fast transient • High Efficiency, Less than 10-µA Supply response with no external components. The adaptive Current at Shutdown on-time control supports seamless operation between PWM mode during heavy load conditions and • Adjustable Soft-Start Time reduced frequency operation during light load • Support Pre-Biased Soft Start conditions for high efficiency. • 700-kHz Switching Frequency The TPS53511 includes a proprietary circuit that • Cycle-By-Cycle Overcurrent Limit enables the device to adapt to both low equivalent • Open Drain Power Good Indication series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic • Internal Bootstrap Switch capacitors. The device operates from 4.5-V to 18-V • Small 3 mm × 3 mm, 16-Pin QFN (RGT) supply input, and from 2-V to 18-V input power supply Package voltage. The device features an adjustable slow start time and a power good function. It also supports pre- biased soft start. The TPS53511 is available in the 16-pin QFN package, and designed to operate from –40°C to 85°C. TYPICAL APPLICATION 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 DCAP2, PowerPAD are trademarks 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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