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TPS54325PWP Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54325PWP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 20 page 1 FEATURES DESCRIPTION APPLICATIONS V (50 mV / div) OUT I (2 A / div) OUT 100 s / div µ C4 SGND PGND 8.42 kΩ R1 22 kΩ R2 SGND C5 1 F µ PGND C6 SGND VO1 1.05 V / 3 A C3 10 F µ C1 L1 1.5 H µ PGND C2 0.1 F µ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 POWERPAD TPS54325 PWP HTSSOP14 VO VFB VREG5 GND PG EN VCC VIN VBST SW2 SW1 PGND2 PGND1 VIN Output Signal Input Signal SS TPS54325 www.ti.com ................................................................................................................................................................ SLVS932A – MAY 2009 – REVISED JULY 2009 4.5-V to 18-V, 3-A OUTPUT SYNCHRONOUS STEP DOWN SWITCHER WITH INTEGRATED FET (SWIFT™) 23 • D-CAP2™ Mode Enables Fast Transient Response The TPS54325 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54325 • Low Output Ripple and Allows Ceramic Output enables system designers to complete the suite of Capacitor various end equipment’s power bus regulators with a • Wide V CC Input Voltage Range: 4.5 V to 18 V cost effective, low component count, low standby • Wide V IN Input Voltage Range: 2.0 V to 18 V current solution. The main control loop for the TPS54325 uses the D-CAP2™ mode control which • Output Voltage Range: 0.76 V to 5.5 V provides a very fast transient response with no • Highly Efficient Integrated FET’s Optimized external components. The TPS54325 also has a for Lower Duty Cycle Applications proprietary circuit that enables the device to adapt to - 120 m Ω (High Side) and 70 mΩ (Low Side) both low equivalent series resistance (ESR) output • High Efficiency, less than 10 µA at shutdown capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device • High Initial Bandgap Reference Accuracy operates from 4.5-V to 18-V VCC input , and from • Adjustable Soft Start 2.0-V to 18-V VIN input power supply voltage. The • Pre-Biased Soft Start output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable • 700-kHz Switching Frequency (f SW) slow start time and a power good function. The • Cycle By Cycle Over Current Limit TPS54325 is available in the 14 pin HTSSOP • Power Good Output package, and designed to operate from –40 °C to 85 °C. • Wide Range of Applications for Low Voltage System – Digital TV Power Supply – High Definition Blue-ray Disc™ Players – Networking Home Terminal – Digital Set Top Box (STB) 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 SWIFT, D-CAP2, PowerPAD are trademarks of Texas Instruments. 3 Blue-ray Disc is a trademark of Blu-ray Disc. PRODUCTION DATA information is current as of publication date. Copyright © 2009, 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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