TPS54353

www.ti.com 6,4 mm y 5,0 mm TPS54352, TPS54353 TPS54354, TPS54355 TPS54356, TPS54357 SLVS519A − MAY 2004 − REVISED OCTOBER 2004 4.5ĆV TO 20ĆV INPUT, 3ĆA OUTPUT SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FET (SWIFT) FEATURES D 100 mΩ, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current D Uses External Lowside MOSFET or Diode D Fixed Output Versions − 1.2V/1.5V/1.8V/2.5V/3.3V/5.0V D Internally Compensated for Low Parts Count D Synchronizes to External Clock D 1805 Out of Phase Synchronization D Wide PWM Frequency − Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz D Internal Slow Start D Load Protected by Peak Current Limit and Thermal Shutdown D Adjustable Undervoltage Lockout D 16-Pin TSSOP PowerPADE Package APPLICATIONS D Industrial & Commercial Low Power Systems D LCD Monitors and TVs D Computer Peripherals D Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors SIMPLIFIED SCHEMATIC TPS54356 SYNC VIN PWRGD ENA BIAS BOOT PH LSG PGND VSENSE PWRPAD Input Voltage Output Voltage DESCRIPTION The TPS5435x is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an optional low side external MOSFET. Features include a high performance voltage error amplifier that enables maximum performance under transient conditions. The TPS5435x has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches a preset value; an internal slow...