Fairchild FAN5069高效电源控制方案
The FAN5069 combines a high-efficiency Pulse-Width-Modulated (PWM) controller and an LDO (Low DropOut) linear regulator controller. Synchronous rectification provides
high efficiency over a wide range of load currents.
Efficiency is further enhanced by using the low-side MOSFET’s RDS (ON) to sense current. Both the linear and PWM regulator soft-start are controlled by a single external capacitor, to limit in-rush current from the supply when the regulators are first enabled. Current limit for PWM is also programmable.
The PWM regulator employs a summing-current-mode control with external compensation to achieve fast load transient response and provide design optimization.
FAN5069 is offered in both industrial temperature grade (-40°C to +85°C) as well as commercial temperature grade (-10°C to +85°C).
FAN5069主要特性:
■General Purpose PWM Regulator and LDO Controller
■Input Voltage Range: 3V to 24V..
