Diodes AUR9716 - Manual

Data Sheet
1.0MHz to 1.4MHz, 2A, STEP DOWN DC-DC CONVERTER AUR9716
Apr. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
1
General Description
The AUR9716 is a high efficiency step-down DC-DC
voltage converter. The chip operation is optimized by
peak-current mode architecture with built-in
synchronous power MOS switchers. It is
automatically switching between the normal PWM
mode and LDO mode to offer improved system
power efficiency covering a wide range of loading
conditions.
Switching frequency during 1.0MHz to 1.4MHz is set
by an external resistor and integrated soft-start (SS),
under-voltage-lock-out (UVLO), thermal shutdown
detection (TSD) and short circuit protection are
designed to provide reliable product applications.
The device is available in adjustable output voltage
versions ranging from 0.8V to V
IN
when input
voltage range is from 2.5V to 5.5V , and is able to
deliver up to 2A.
The AUR9716 is available in DFN-3×3-8 package.
Features
• High efficiency Buck Power Converter
• Low Quiescent Current
• 2A Output Current
• Low R
DS(ON)
Internal Switches: 110mΩ
• Adjustable Output Voltage from 0.8V to V
IN
• Wide Operating Voltage Range: 2.5V to 5.5V
• Built-in Power Switches for Synchronous
Rectification with high Efficiency
• 800mV Feedback Voltage Allows output
• Programmable Frequency: 1.0MHz to 1.4MHz
• Thermal Shutdown Protection
• Low Drop-out Operation at 100% Duty Cycle
• No Schottky Diode Required
Applications
• LCD TV
• Post DC-DC Voltage Regulation
• PDA and Notebook Computers
Figure 1. Package Type of AUR9716
DFN-3Ч3-8