NX2154
Overview
- Bus voltage operation from 2V to 40V controller IC designed for step down DC to DC con-
- Fixed 300kHz voltage mode controller verter applications. It is optimized to convert bus volt-
- Internal Digital Soft Start Function ages from 2V to 40V to outputs as low as 0.8V voltage.
- Prebias Startup The NX2154/2154A operates at fixed 300kHz. The
- Less than 50 nS adaptive deadband NX2154/2154A employs fixed loss-less current limiting
- Current limit triggers hiccup by sensing Rdson of by sensing the Rdson of synchronous MOSFET followed Synchronous MOSFET by hiccup 2154A has higher current limit
- No negative spike at Vout during startup and threshold than NX2154. Feedback under voltage also shutdown triggers hiccup.
- Pb-free and RoHS compliant Other features of the device are: 5V gate drive, Adaptive deadband control, Internal digital soft start, Vcc n undervoltage lock out and shutdown capability via the n comp pin.
