FAN53730 Series

3.0A, 2.7MHz, Digitally Programmable COT Buck Regulator

Catalog

3.0A, 2.7MHz, Digitally Programmable COT Buck Regulator

Part	Current - Output	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Voltage - Input (Max) [Max]	Frequency - Switching	Function	Package / Case	Output Configuration	Voltage - Output (Min/Fixed)	Voltage - Input (Min) [Min]	Synchronous Rectifier	Supplier Device Package	Mounting Type	Number of Outputs	Voltage - Output (Max) [Max]	Topology
ON Semiconductor FAN53730UC01X	3 A	85 °C	-40 °C	Programmable	5.5 V	2.5 MHz	Step-Down	12-XFBGA WLCSP	Positive	0.3 V	2.3 V		12-WLCSP (1.07x1.36)	Surface Mount	1	2 V	Buck

Catalog

3.0A, 2.7MHz, Digitally Programmable COT Buck Regulator

Key Features

• Constant On-Time (COT) Architecture

• Low Quiescent current: 12µA

• 1.2V and 1.8V Logic compatible

• Audio Reduction Mode

• Power Good Output

• Fault protections (Input under voltage, Short circuit, and Thermal)

• Programmable output voltage from 0.3-2V

Description

The FAN53730 is a constant on time (COT) buck converter that supports a minimum of 3 A load current. The device’s constant on time topology provides the fastest transient recovery and optimal efficiency vs load due to its variable frequency operation. Two options are available: a fully programmable I2C version, and a logic controlled fixed output voltage version (refer to Ordering Information for voltage options). Both versions provide automatic DCM/CCM mode operation with Forced CCM control.