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AUR9717 (NRND)

NRND = Not Recommended for New Design

Inactive Datasheet Archive

Datasheet

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Description

The AUR9717 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 including Soft Start (SS), Under Voltage Lock Out (UVLO), Input Over Voltage Protection (IOVP) and Thermal Shutdown Detection (TSD) are integrated 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 1A. The AUR9717 is available in WDFN-3Ω3-10 package.

Application(s)

Mobile Phone, Digital Camera and MP3 Player

Headset, Radio and Other Hand-held Instruments

Post DC-DC Voltage Regulation

PDA and Notebook Computer

Product Specifications

Product Parameters

Efficiency (%)	95
Frequency Typ (Hz)	1500
HS RDS(ON) (mΩ)	280
LS RDS(ON) (mΩ)	250
MaximumInput Voltage (V)	5.5
MinimumInput Voltage (V)	2.5
Output Current (mA)	1
Output Voltage (V)	1V to 3.3V
Quiescent Current Typ (mA)	0.1
Shutdown Current Typ (µA)	0.1
Type	Buck

Technical Documents

Recommended Soldering Techniques

TN1.pdf

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)