onsemi FAN53730 Digitally Programmable COT Buck Regulator

onsemi FAN53730 Digitally Programmable COT Buck Regulators are constant on-time (COT) buck converters that support a minimum 3A load current. Due to variable frequency operation, the COT topology provides fast transient recovery and optimal efficiency vs load. The FAN53730 regulators feature automatic DCM/CCM mode operation with forced CCM control and are available with I²C or logic control.

Features

2.3V to 5.5V input voltage range
Output voltage
- Programmable from 0.3V to 2V
- Pin selectable defaults
Low 12µA quiescent current
Internal soft-start limits input current during turn-on
2.5MHz switching frequency in continuous conduction operation
1.2V and 1.8V logic compatible
Fault protection (input under voltage, short circuit, over current, and thermal)

Power Good output (PG)
Forced Continuous Conduction Mode (FCCM)
Audio reduction mode eliminates audible tones due to switching
Options
- Fully programmable I²C version
- Logic controlled fixed output voltage version
-40°C to +85°C ambient temperature range
1.07mm x 1.36mm, 0.35mm pitch, 12-bump WLCSP
Lead-free

Applications

LPDDR memory
Mobile and smart devices
RF modules

Application, graphic, and DSP processors
ISP power

onsemi FAN53730 Digitally Programmable COT Buck Regulator

Features

Applications

Typical Application Circuit

Simplified Block Diagram

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