Advanced Analogic Technologies (AnalogicTech) says it has introduced the first integrated power solution to conform to the emerging USB On-The-Go (OTG) specification. Using a high efficiency charge pump topology, the AAT3125 regulates output voltage to 5 V and supplies up to 100 mA output current. Additionally, all voltage monitoring functionality is integrated to ensure OTG-protocol compatibility.
An addendum to the widely implemented USB 2.0 standard, USB OTG was developed to allow mobile devices and peripherals to communicate with each other without the aid of a PC. Portable devices and peripherals conforming to the spec circumvent the need for PC control by dynamically negotiating a master/slave or 'host/peripheral' relationship. By simplifying the device-to-device interface, USB OTG is expected to open up a wide range of new applications for mobile devices.
To meet the requirements of USB OTG, dual role devices must supply a minimum of 8 mA on the 5 V bus to maintain compatibility with the existing USB standard. In addition, the system must be able to step up battery voltage to 5 V with maximum efficiency to preserve battery run time. The company says that the AAT3125, running at 1 MHz, regulates output voltage to 5 V and ensures power supply between 8 mA and 100 mA. Moreover, the device's high switching frequency allows the use of smaller capacitors, which contribute to a smaller footprint, a key consideration in mobile device design.
The AAT3125 also monitors the Vbus to support the USB OTG session request protocol (SRP). Two PowerOK detectors on the chip confirm the bus is in regulation while session detect and session ready detectors manage the communications protocol outlined in the new standard. The chip also features reverse load, output short circuit, thermal protection and under voltage protection circuits. When the AAT3125 is disabled, the Session Detect monitor remains active while the charge pump is turned off and power consumption is reduced to a minimal 1 µA.
Samples and a demo board for the AAT3125 are available. The device comes in a 16-pin 4x4 mm QFN package.
For more information contact Stephen Delport, Hi-Q Electronics, 021 595 1307, [email protected]
Next-gen power meter Electrocomp Express
Power Electronics / Power Management
The VT-PWR-LV is a next-gen Vista Touch power meter from Trumeter for single, split, and three-phase systems.
Read more...Advanced PMIC for high-performance AI applications ASIC Design Services
Power Electronics / Power Management
Microchip Technology has announced the MCP16701, a Power Management Integrated Circuit (PMIC) designed to meet the needs of high-performance MPU and FPGA designers.
Read more...New SiC power MOSFET Future Electronics
Power Electronics / Power Management
STMicroelectronics’ SCT012H90G3AG is a robust, automotive-grade SiC MOSFET, engineered for demanding power electronics, featuring a 900?V drain-source voltage and exceptionally low on-resistance of 12?mO at 60?A.
Read more...Fundamental motor control design challenges and solutions
Power Electronics / Power Management
Mouser Electronics has announced a new eBook in collaboration with Qorvo, featuring industry experts providing key insights into methods, power efficiency and integration solutions available for motor control applications.
Read more...Power management IC for battery products
Power Electronics / Power Management
The nPM1304 PMIC complements Nordic’s nPM1300 PMIC with a highly integrated, ultra-low power solution and precision fuel gauging for small size battery applications.
Read more...Powering Innovation eBook: Changing what’s possible
Power Electronics / Power Management
This exclusive read, entitled ‘Changing what’s Possible,’ delves into how power dense Vicor modules enable many world-changing innovations across various sectors.
Read more...16-channel multicell battery monitor Altron Arrow
Power Electronics / Power Management
The ADBMS6830B is a multicell battery stack monitor that measures up to 16 series-connected battery cells with a lifetime total measurement error of less than 2 mV.
Read more...Reliable redundancy with the Mibbo M3DN Series Conical Technologies
Power Electronics / Power Management
Designed for use with two parallel-connected power supplies, the M3DN Series allows for true redundancy, making it ideal for mission-critical applications.
Read more...Automotive power-over-coax inductor RS South Africa
Power Electronics / Power Management
TDK has launched the ADL8030VA, a high-performance inductor designed specifically for power-over-coaxial applications.
Read more...Rugged PSU for challenging conditions Conical Technologies
Power Electronics / Power Management
Built for rugged reliability, the Mibbo MFC Series delivers stable, efficient power in environments where moisture, dust, and temperature extremes are everyday challenges.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version