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MT9216 800mA,2V-6V Input,1.5MHz Synchronous Step-Down Converter

The MT9216 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 MT9216 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.
The MT9216 is offered in a low profile 5-pin,
SOT package, and is available in an adjustable
version and fixed output voltage of 1.2V,1.5V,
1.8V,2.5V and 3.3V.

FEATURES
⚫ High Efficiency: Up to 96%
⚫ 1.5MHz Constant Frequency Operation
⚫ 800mA Output Current
⚫ No Schottky Diode Required
⚫ 2V to 6V Input Voltage Range
⚫ Output Voltage as Low as 0.6V
⚫ PFM Mode for High Efficiency in Light
Load
⚫ 100% Duty Cycle in Dropout Operation
⚫ Low Quiescent Current: 20μA
⚫ 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
⚫ Cellular and Smart Phones
⚫ Wireless and DSL Modems
⚫ PDAs
⚫ Portable Instruments
⚫ Digital Still and Video Cameras
⚫ MP3 Players