DATASHEET
ISL78201 FN8615
Rev 2.00
August 15, 2016 40V 2.5A Regulator with Integrated High-Side MOSFET for Synchronous Buck or
Boost Buck Converter
The ISL78201 is an AEC-Q100 qualified 40V, 2.5A synchronous
buck or boost buck controller with a high-side MOSFET and
low-side driver integrated. In Buck mode, the ISL78201
supports a wide input range of 3V to 40V. 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 ISL78201 has a flexible selection of operation modes
including forced PWM mode and an optional switch to PFM
mode for light loads. In PFM mode, the quiescent input current
is as low as 300ВµA and can be further reduced to 180ВµA with
AUXVCC connected to VOUT under 12V VIN and 5V VOUT
application. The load boundary between PFM and PWM can be
programmed to cover wide applications.
The low-side driver can be either used to drive an external
low-side MOSFET for a synchronous buck, or left unused for a
standard non-synchronous buck. The low-side driver can also …
