AT1392
Preliminary Product Information
1- Channel Synchronous Buck PWM Controller

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
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Features
• High efficiency
• Using external P and N channel MOSFET
• Maximum Duty 100%
• Oscillation frequency 600KHz
• Soft Start by an external capacity
• Output voltage accuracy ±2%
• Built-in ON/OFF Function
• Stand-by current max. 10µA
• Quiescent Current 1mA
• Input voltage: 2.5V ~7.0V
Applications
• Power Supply for portable devices
General Description
The AT1392 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 N-
Channel in a buck topology. The AT1392
integrates all of the control, output adjustment 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 AT1392 is a family of
low-noise synchronous step-down 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.
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.