Diodes AUR9705 Manuel d'utilisateur télécharger pdf

Data Sheet

1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705

Sep. 2013 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

General Description

The AUR9705 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 1A.

The AUR9705 is available in WDFN-2×2-6 and

TSOT-23-5 packages.

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

Figure 1. Package Types of AUR9705

WDFN-2×2-6 TSOT-23-5

1 2 3 4 5 6 ... 15 16

Résumé du contenu

Page 1 -

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 2 - WDFN-2×2-6 TSOT-23-5

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 3 - Ordering Information

Data Sheet 1.5MHz , 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 4

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 5 - =0.7V 100 μA

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 6 - Efficiency (%)

Data Sheet 1.5MHz , 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 7

Data Sheet 1.5MHz , 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 8

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

Page 9 - Application Information

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 10 - QQfI +×=

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 11 - Table 1. Component Guide

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 12

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 13

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 14

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 15

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Page 16

Data Sheet 1.5MHz, 1A, STEP DOWN DC-DC CONVERTER AUR9705 Sep. 2013 Rev. 1. 2

Commentaires sur ces manuels

Pas de commentaire

Diodes AUR9705 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Matériel Diodes AUR9705. Diodes AUR9705 User Manual [de] Manuel d'utilisatio

Résumé du contenu

Commentaires sur ces manuels

Produits connexes et manuels pour Matériel Diodes AUR9705