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TPS61289
SLVSGT4A – DECEMBER 2023 – REVISED JANUARY 2024
TPS61289 23VLOW , 25VHIGH, 20A Bidirectional BUCK/BOOST Converter
1 Features
3 Description
• VLOW voltage range: 0.5V to 23V
The TPS61289 is a bidirectional buck/boost
– The minimum VLOW voltage is determined by the VLOW/VHIGH ratio and frequency
• VHIGH voltage range: 4.5V to 25V • Pin selectable bidirectional buck or boost mode • Buck/boost forced PWM mode operation • High efficiency and power capability
– Programmable current limit: 5A to 20A – Integrated 8.5mΩ high-side MOSFET • Switching frequency
– FSW 250kHz when VLOW > 1.7V – FSW down to 100kHz when VLOW < 1.5V – FSW down to 50kHz when VLOW < 0.