1-Channel Synchronous Buck PWM Controller
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AT1368
1-Channel Synchronous Buck PWM Controller with Power Good Reset General Description
The AT13...
Description
www.DataSheet4U.com
AT1368
1-Channel Synchronous Buck PWM Controller with Power Good Reset General Description
The AT1368 provides complete control and protection for a DC/DC converter optimized for high-performance microprocessor applications. It is designed to drive one P-Channel and one NChannel MOSFETs in a synchronous-rectified buck topology. The AT1368 integrates all of the control, output adjustment, monitoring and protection functions into a single package. The output voltage of the converter can be precisely regulated with a maximum tolerance of ±2% over temperature and line voltage variations. The AT1368 is a family of low-noise synchronous stepdown DC/DC converters that is ideally suited for systems powered from a 1-cell Li-ion battery or from a 3-cell to 4-cell NiCd, NiMH, or alkaline battery. It can also be used to USB-Based power system.
Features
High efficiency (min. 90% On IO=300mA ~600mA) Using external P and N channel MOSFET Supports for down and up/down Zeta conversion Maximum Duty 100% Oscillation frequency 300KHz or 600KHz Soft Start by an external capacity Output voltage accuracy ±2% Built-in ON/OFF Function Built-in Short-circuit Protection Stand-by current max. 10µA Quiescent Current 1mA Monitor the input voltage and 3V3 output Input voltage: 2.5V ~7.0V
Applications
Slim-Type CD-ROM/DVD-ROM/CD-RW Power Supply for portable devices Main or Sub Power source foe notebook computers and peripherals.
Block Diagram
2F, No.1...
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