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TPS74401RGWRG4 Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS74401RGWRG4 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 22 page TPS74401 TPS74401 www.ti.com FEATURES DESCRIPTION APPLICATIONS TPS74401 GND EN FB IN PG SS OUT V IN V OUT V PG R 1 R 2 R 3 C OUT Optional C IN 1 F m C SS V BIAS C BIAS 1 F m BIAS 1V/div 500mV/div Time(1ms/div) C =0 F SS m C =0.001 F SS m C =0.0047 F SS m V OUT V EN 0V 1.1V TPS74401 SBVS066D – DECEMBER 2005 – REVISED AUGUST 2006 3.0A Ultra-Low Dropout Linear Regulator • Soft-Start (SS) Pin Provides a Linear Startup The TPS74401 low-dropout (LDO) linear regulator with Ramp Time Set by External Capacitor provides an easy-to-use robust power management • 1% Accuracy Over Line, Load, and solution for a wide variety of applications. Temperature User-programmable soft-start minimizes stress on • Supports Input Voltages as Low as 0.9V with the input power source by reducing capacitive inrush External Bias Supply current on start-up. The soft-start is monotonic and well-suited for powering many different types of • Adjustable Output (0.8V to 3.6V) processors and ASICs. The enable input and • Ultra-Low Dropout: 115mV at 3.0A (typ) power-good output allow easy sequencing with • Stable with Any or No Output Capacitor external regulators. This complete flexibility permits the user to configure a solution that will meet the • Excellent Transient Response sequencing requirements of FPGAs, DSPs, and • Available in 5mm × 5mm × 1mm QFN and other applications with specific start-up requirements. DDPAK-7 Packages A precision reference and error amplifier deliver 1% • Open-Drain Power-Good (QFN only) accuracy over load, line, temperature, and process. • Active High Enable Each LDO is stable with low-cost ceramic output capacitors and the device is fully specified from –40 °C to +125°C. The TPS74401 is offered in a • FPGA Applications small (5mm × 5mm) QFN package, yielding a highly compact total solution size. For applications that • DSP Core and I/O Voltages require additional power dissipation, the DDPAK • Post-Regulation Applications (KTW) package is also available. • Applications with Special Start-Up Time or Sequencing Requirements • Hot-Swap and Inrush Controls Figure 1. Typical Application Circuit Figure 2. Turn-On Response 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. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2005–2006, 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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