General Description
The APW7179 consists of two independent 1.5MHz constant frequency, current mode, and PWM step-down converters. Each converter integrates a main switch with a synchronous rectifier for high efficiency without an external Schottky diode. The APW7179 is ideal for powering portable equipment that runs from a single cell LithiumIon (Li+) battery. Each converter can supply 1A of load current from a 2.7V to 5.5V input voltage. The output voltage can be regulated as low as 0.6V. The APW7179 can also run at 100% duty cycle for low dropout applications.

Features
• 1A Output Current on Each Channel
• 2.7V to 5.5V Input Voltage Range
• 1.5MHz Constant Frequency Operation
• Low Dropout Operation at 100% Duty Cycle
• Synchronous Topology
• 0.6V Low Reference Voltage
• Current Mode Operation
• Over-Temperature Protection
• Over-Current Protection
• Up to 94% Efficiency
• Internally Compensated
• Lead Free and Green Devices Available (RoHS Compliant)

Applications
• TV Tuner/Box
• Portable Instrument