AIC2354B
1.5MHz 1A Synchronous Step-Down DC/DC Converter
- FEATURES
-
- �� High Efficiency: Up to 96%(@3.3V)
- �� 1.5MHz Constant Frequency Operation
- �� 1.0A Output Current
- �� No Schottky Diode Required
- �� 2.5V to 5.5V Input Voltage Range
- �� Output Voltage as Low as 0.6V
- �� 100% Duty Cycle in Dropout
- �� Low Quiescent Current: 50μA
- �� Slope Compensated Current Mode Control
- for Excellent Line and Load Transient
- Response
- �� Short Circuit Protection
- �� Thermal Fault Protection
- �� Inrush Current Limit and Soft Start
- �� Input Over Voltage Protection(OVP)
- �� <1μA Shutdown Current
- �� SOT23-5 Package
- APPLICATIONS
-
- �� Cellular and Smart Phones
- �� Wireless and DSL Modems
- �� PDA/MID/PAD
- �� Digital Still and Video Cameras
- DESCRIPTION
- The AIC2354B is a constant frequency, current
mode PWM 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 0.6V. The AIC2354B can
also run at 100% duty cycle for low dropout
operation, extending battery life in portable
system. 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.
- TYPICAL APPLICATION
