• Single inductor 4-switch buck-boost controller
• On-the-fly bidirectional operation with independent
control of voltage and current on both ends
• Proprietary algorithm for smoothest mode transition
• MOSFET drivers with adaptive shoot-through
protection
• Wide input voltage range: 4.5V to 80V
• Wide output voltage range: 0.8V to 80V
• Supports startup into pre-biased rails
• Programmable frequency: 100kHz to 600kHz
• Supports parallel operation current sharing with
cascade phase interleaving
• External sync with clock out or frequency dithering
• External bias for higher efficiency for 8V to 36V input
• Output and input current monitor
• Selectable PWM mode operation between
PWM/DE/Burst modes
• Accurate EN/UVLO and PGOOD indicator
• Low shutdown current: 2.7µA
• Complete protection: OCP, SCP, OVP, OTP, and UVP
○ Dual-level OCP with average current and
pulse-by-pulse peak current limit, also provides
Short Circuit Protection (SCP)
○ Selectable OCP response with either hiccup or
constant current mode
○ Negative pulse-by-pulse peak current limit