AUR9718B (NRND)

NRND = Not Recommended for New Design

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Description

The AUR9718B 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 MOSFET switchers. 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), Thermal Shutdown Detection (TSD) and short circuit protection are integrated to provide reliable product applications. The device is available in adjustable output voltage versions ranging from 0.8V to VIN when input voltage range is from 2.7V to 5.5V, and is able to deliver up to 2.5A.

Application(s)

LCD TV

Set Top Box

Post DC-DC Voltage Regulation

PDA and Notebook Computer

Product Specifications

Product Parameters

Efficiency (%)	95
Frequency Typ (Hz)	1500
HS RDS(ON) (mΩ)	100
LS RDS(ON) (mΩ)	100
MaximumInput Voltage (V)	5.5
MinimumInput Voltage (V)	2.7
Output Current (mA)	2.5
Output Voltage (V)	ADJ
Quiescent Current Typ (mA)	0.3
Shutdown Current Typ (µA)	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-2380	2018-11-07	2019-05-07	Device End of Life (EOL)