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MT3820 Dual 1.5A,2.3V-6V Input,1.5MHz Synchronous Step-Down Converter

The MT3820 is a dual high-efficiency
Pulse-Width-Modulated (PWM) step-down
DC/DC converter. It is capable of delivering
1.5A output current over a wide input voltage
range from 2.3V to 6V, the MT3820 is ideally
suited for portable electronic devices that are
powered from 1-cell Li-ion battery or from other
power sources within the range such as cellular
phones, PDAs and other handheld devices. Two operational modes are available. PWM/Low-Dropout auto-switch and shutdown
modes. Internal synchronous rectifier with low
RDS(ON) dramatically reduces conduction loss at
PWM mode. No external Schottky diode is
required in practical application. The MT3820 enters Low-Dropout mode when
normal PWM cannot provide regulated output
voltage by continuously turning on the upper
PMOS. The MT3820 enter shutdown Mode
And consumes less than 0.1μA when EN pin is
pulled low.

FEATURES
 High Efficiency: Up to 96%
 1.5MHz Constant Frequency Operation
 Dual 1.5A Output Current
 No Schottky Diode Required
 2.3V to 6V Input Voltage Range
Output Voltage as Low as 0.6V
Low Quiescent Current: 35μA
 Thermal Fault Protection
 Inrush Current Limit and Soft Start
 <1μA Shutdown Current
 DFN3X3-12 package
APPLICATIONS
 Cellular and Smart Phones
 Personal Information Appliances
 Wireless and DSL Modems
 MP3 Players