TPS54291 Datasheet | Texas Instruments

Features - 1 4.5-V to 18-V Input Range - Output Voltage Range 0.8 V to DMAX × VIN - Fully Integrated Dual Buck: 1.5 A and 2.5 A - Three Fixed Switching Frequency Versions: - TPS54290: 300 k Hz - TPS54291: 600 k Hz - TPS54292: 1.2 MHz - Integrated UVLO - 0.8 VREF With 1% Accuracy (0°C to 85°C) - Internal Soft Start: - TPS54290: 5.2 ms - TPS54291: 2.6 ms - TPS54292: 1.3 ms - Dual PWM Outputs 180° Out-of-Phase - Dedicated Enable for Each Channel - Current Mode Control for Simplified pensation - External pensation - Pulse-by-Pulse Overcurrent Protection, 2.2-A and 3.8-A Overcurrent Limit - Integrated Bootstrap Switch - Thermal Shutdown Protection at 145°C - 16-Pin Power PAD™ HTSSOP Package 3 Description The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external ponents. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage. Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A. Current mode control simplifies the pensation. The external pensation adds flexibility for the user to choose different type of output capacitors. 180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS54290 TPS54291 TPS54292 HTSSOP (16) 5.00 mm × 4.40 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 2 Applications - Set-Top Boxes - Digital TVs - Power for DSP - Consumer...