XR3455 1uA超低静态电流，1.3A输出同步降压芯片
FEATURES
* Ultra low Iq:1uA
* High Efficiency: Up to 96%
* 1.5MHz Constant Frequency Operation
* 1.3A Output Current
* No Schottky Diode Required
* 2.6V to 7V Input Voltage Range
* Low Dropout Operation:100% Duty Cycle
* PFM Mode for High Efficiency in Light Load
* Slope Compensated Current Mode Control for Excellent Line and Load Transient Response
* Short Circuit Protection
* Thermal Fault Protection
* Inrush Current Limit and Soft Start
* <1μA Shutdown Current
* SOT23-5 package
APPLICATIONS
Wearable
IOT
Energy Harvest
Battery powered devices
GENERAL DESCRIPTION
The is a constant frequency, current mode step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery. The output voltage can be regulated as low as 1.13V.
This device offers two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load.
The is offered in a low profile 5-pin,SOT package, and is available in an adjustable version.