Intersil's ISL78201/6 40V 2.5A Buck Controllers are AEC Q100 qualified synchronous buck or boost buck controllers with a high-side MOSFET and low-side driver integrated. In buck mode, both devices support a wide input range of 3V to 40V. With the ISL78201AVEZ in boost-buck mode, the input range can be extended down to 2.5V and output regulation can be maintained when VIN drops below VOUT, enabling sensitive electronics to remain on during cold-cranking and start-stop applications. The ISL78206 can be operated in synchronous and non-synchronous buck topologies. For vehicle systems that must be kept powered during cold-cranking or start-stop operation, the ISL78206 can be replaced by its pin-to-pin alternative, the ISL78201AVEZ which offers boost-buck operation. Together, these devices offer two functional alternatives on the same PCB layout, providing convenience, flexibility, and facilitating extensive design re-use.
Feature
- Buck mode: input voltage range 3V to 40V
- Boost mode expands operating input voltage lower than 2.5V
- Selectable forced PWM mode or PFM mode
- 300µA IC quiescent current (PFM, no load); 180µA input quiescent current (PFM, no load, VOUT tied to AUXVCC)
- Less than 5µA (MAX) shutdown input current (IC disabled)
- Operational topologies
- Synchronous buck
- Non-synchronous buck
- Two-stage boost buck
- Noninverting single inductor buck boost
- Programmable frequency from 200kHz to 2.2MHz and frequency synchronization capability
- ±1% Tight voltage regulation accuracy
- Reliable cycle-by-cycle overcurrent protection
- Temperature compensated current sense
- Programmable OC limit
- Frequency foldback and hiccup mode protection
- 20 Ld HTSSOP package
- AEC-Q100 qualified
- Pb-free (RoHS compliant)
