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TPS54226PWPR Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54226PWPR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 32 page V -50mA/div OUT I -1 A/div OUT 100 s/div m TPS54226 www.ti.com SLVSA14E – OCTOBER 2009 – REVISED JULY 2011 4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter with Eco-Mode ™ Check for Samples: TPS54226 1 FEATURES APPLICATIONS 23 • D-CAP2 ™ Mode Enables Fast Transient • Wide Range of Applications for Low Voltage Response System • Low Output Ripple and Allows Ceramic Output – Digital TV Power Supply Capacitor – High Definition Blu-ray Disc™ Players • Wide VCC Input Voltage Range: 4.5 V to 18 V – Networking Home Terminal • Wide VIN Input Voltage Range: 2 V to 18 V – Digital Set Top Box (STB) • Output Voltage Range: 0.76 V to 5.5 V DESCRIPTION • Highly Efficient Integrated FET ’s Optimized The TPS54226 is a adaptive on-time D-CAP2 ™ for Lower Duty Cycle Applications mode synchronous buck converter. TheTPS54226 – 160 mΩ (High Side) and 110 mΩ (Low Side) enables system designers to complete the suite of • High Efficiency, less than 10 μA at shutdown various end equipment ’s power bus regulators with a • Auto-Skip Eco-Mode ™ for High Efficiency at cost effective, low component count, low standby Light Load current solution. The main control loop for the TPS54226 uses the D-CAP2 ™ mode control which • High Initial Bandgap Reference Accuracy provides a fast transient response with no external • Adjustable Soft Start compensation components. The adoptive on-time • Pre-Biased Soft Start control supports seamless operation between PWM mode at heavy load condition and reduced frequency • 700-kHz Switching Frequency (fSW) Eco-Mode ™ operation at light load for high efficiency. • Cycle By Cycle Over Current Limit The TPS54226 also has a proprietary circuit that • Power Good Output enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as • Auto-Skip Mode POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VCC input, and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54226 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C. 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 D-CAP2, Eco-Mode, PowerPAD are trademarks of Texas Instruments. 3 Blu-ray Disc is a trademark of Blu-ray Disc Association. PRODUCTION DATA information is current as of publication date. Copyright © 2009–2011, 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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