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TPS5432DDA Datasheet(PDF) 1 Page - Texas Instruments |
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TPS5432DDA Datasheet(HTML) 1 Page - Texas Instruments |
1 / 28 page 100 95 90 85 80 75 70 65 60 55 50 0 500 1000 1500 2000 2500 3000 Load Current - mA Vin = 5 V, Vout = 1.2 V Vin = 3.3 V, Vout = 1.2 V Vin = 5 V, Vout = 1.8 V Vin = 3.3 V, Vout = 1.8 V Vin = 5 V, Vout = 3.3 V PH VIN BOOT VSENSE COMP TPS5432 EN SS INPUT 3-6 V GND Cin 10 F 10 V m Rc 4.99 kW Cc 3.3 nF Css 0.01 F m 2 7 6 8 1 C BOOT 0.1 F 10 V m L 3.3 H O m C 22 Fx2 O m 1.2 V@3 A R1 10 kW R2 20 kW Cff 390 pF 3 5 4 TPS5432 www.ti.com SLVSB89 – MARCH 2012 2.95V to 6V Input, 3A Output, 700kHz Synchronous Step Down Converter Check for Samples: TPS5432 1 FEATURES DESCRIPTION The TPS5432 is a 6V, 3A, low Iq, current mode, 2 • Two 70m Ω (typical) MOSFETs for 3A synchronous monolithic buck converter with Continuous Output Current integrated MOSFETs. The TPS5432 enables small • Current Mode Control With External designs by integrating the MOSFETs, implementing Compensation current mode control to reduce external component count, reducing inductor size by 700kHz switching • 700kHz Switching Frequency frequency. SOIC-8 package with exposed thermal • 360µA no Load Quiescent Operating Current pad provides both thermally enhanced solution and (no switching) easy to use. • 0.808V Internal Voltage Reference The TPS5432 provides accurate regulation for a • ±2.0% Reference Accuracy at 25°C variety of loads with an accurate 3.0% voltage • ±3.0% Reference Accuracy Over Temperature reference over temperature. Range –20°C~125°C Efficiency is maximized through the integrated 70m Ω • Stable Operation With Ceramic Output MOSFETs and 360 μA typical supply current. Using Capacitor the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode. • Adjustable Slow Start • Cycle by Cycle Current Limit, and Frequency The output voltage startup ramp is controlled by the Fold Back Protection slow start pin. A ceramic capacitor at this pin can easily adjust the slow start time. • Thermally Enhanced 8-Pin SOIC (DDA) Package Frequency fold back and thermal shutdown protects the device during an over-current condition. APPLICATIONS • Consumer Applications such as DTV, Set Top Boxes, LCD displays, CPE • Low-Voltage Point-of-Load Regulations for SoC, CPU, DSP SIMPLIFIED SCHEMATIC 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 PowerPAD is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2012, 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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