TPS54290PWPR

1.5 A / 2.5 -A双通道，全同步降压转换器，集成MOSFET 1.5-A/2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET

DESCRIPON

TPS54290/1/2 is a dual output fully synchronous buck converter capable of supporting applications with a minimal number of external components. 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.

FEATURES

• 4.5 V to 18 V Input Range

• Output Voltage Range 0.8 V to DMAX × VIN

• Fully Integrated Dual Buck, 1.5 A/2.5 A

• Three Fixed Switching Frequency Versions:

– TPS54290 – 300 kHz

– TPS54291 – 600 kHz

– 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 Compensation

• External Compensation

• Pulse-by-Pulse Overcurrent Protection, 2.2 A/3.8 A Overcurrent Limit

• Integrated Bootstrap Switch

• Thermal Shutdown Protection at 145°C

• 16-Pin PowerPAD™ HTSSOP Package

APPLICATIONS

• Set Top Box

• Digital TV

• Power for DSP

• Consumer Electronics