DATASHEET
ISL85412 FN8378
Rev 1.00
March 13, 2015 Wide VIN 150mA Synchronous Buck Regulator
The ISL85412 is a 150mA synchronous buck regulator with an
input range of 3.5V to 40V. It provides an easy to use, high
efficiency low BOM count solution for a variety of applications. Features The ISL85412 integrates both high-side and low-side NMOS
FETs and features a PFM mode for improved efficiency at light
loads. This feature can be disabled if forced PWM mode is
desired. The part switches at a default frequency of 700kHz.
By integrating both NMOS devices and providing internal
configuration, minimal external components are required,
reducing BOM count and complexity of design. Synchronous operation for high efficiency With the wide VIN range and reduced BOM, the part provides
an easy to implement design solution for a variety of
applications while giving superior performance. It will provide
a very robust design for high voltage industrial applications as
well as an efficient solution for battery powered applications. Internal soft-start The part is available in a small Pb-free 3mmx3mm TDFN
plastic package with an operation junction temperature range
of -40°C to +125°C. Wide input voltage range of 3.5V to 40V No compensation required Integrated high-side and low-side NMOS devices Selectable PFM or forced PWM mode at light loads Internal switching frequency 700kHz Continuous output current up to 150mA Minimal external components required Power-good and enable functions available Applications Industrial control Medical devices Portable instrumentation Related Literature Distributed power supplies AN1929, “ISL85413EVAL1Z, ISL85412EVAL1Z Evaluation
Boards” Cloud infrastructure AN1931, “ISL85413DEMO1Z, ISL85412DEMO1Z Wide VIN
Synchronous Buck Regulator -Short Form” 100 VOUT VIN
GND C6
0.1ВµF C1 …
