Diodes Incorporated

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

Back to Inactve Datasheet Archive

AUR9703 (Not Recommended for new design)

NRND = Not Recommended for New Design

Inactive Datasheet Archive

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The AUR9703 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 MOSFET 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 of small surface mount inductors and capacitors for portable product implementations. Additional features included Soft Start (SS), Under Voltage Lock Out (UVLO), and Thermal Shutdown Detection (TSD) to provide reliable product applications. The device is available in adjustable output voltage versions ranging from 1V to 3.3V, and is able to deliver up to 800mA. The AUR9703 is available in TSOT-23-5 package.


  • Mobile Phone, Digital Camera and MP3 Player
  • Headset, Radio and Other Hand-held Instrument
  • Post DC-DC Voltage Regulation
  • PDA and Notebook Computer

Product Specifications

Product Parameters

Efficiency (%) 95
Frequency Typ (Hz) 1500
HS RDS(ON) (mΩ) 250
LS RDS(ON) (mΩ) 270
MaximumInput Voltage (V) 5.5
MinimumInput Voltage (V) 2.5
Output Current (mA) 0.8
Output Voltage (V) ADJ
Quiescent Current Typ (mA) 0.1
Shutdown Current Typ (µA) 0.1
Type Buck

Related Content


Technical Documents

Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2505 2021-01-26 2021-07-26 Device End of Life (EOL)