AUR9713 Datasheet, PDF (1/14 Pages) BCD Semiconductor Manufacturing Limited – 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER

Data Sheet
1.5MHz, 1A, STEP DOWN DC-DC CONVERTER
AUR9713
General Description
The AUR9713 is a high efficiency step-down
DC-DC voltage converter. The chip operation is
optimized using constant frequency, peak-current
mode architecture with built-in synchronous power
MOS switchers and internal compensators to reduce
external part counts. 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.
The oscillator and timing capacitors are all built-in
providing an internal switching frequency of
1.5MHz that allows the use only small surface mount
inductors and capacitors for portable product
implementations. Additional features included
integrated Soft Start (SS), Under Voltage Lock OUT
(UVLO).
The device is available in adjustable output voltage
versions ranging from 1V to 3.3V, and is able to
deliver up to 1A.
The AUR9713 is available in TSOT-23-5 package.
Features
• High Efficiency Buck Power Converter
• Low Quiescent Current
• Output Current: 1A
• Adjustable Output Voltage from 1V to 3.3V
• Wide Operating Voltage Range: 2.5V to 5.5V
• Built-in Power Switches for Synchronous
Rectification with High Efficiency
• Feedback Voltage: 600mV
• 1.5MHz Constant Frequency Operation
• Automatic PWM/LDO Mode Switching Control
• Thermal Shutdown Protection
• Low Drop-out Operation at 100% Duty Cycle
• No Schottky Diode Required
Applications
• Mobile Phone, Digital Camera and MP3 Player
• Headset, Radio and Other Hand-held Instrument
• Post DC-DC Voltage Regulation
• PDA and Notebook Computer
TSOT-23-5
Mar. 2012 Rev. 1. 1
Figure 1. Package Type of AUR9713
BCD Semiconductor Manufacturing Limited
1