Charger, converter and regulator combined in tiny package simplifies portable design
18 October 2006Power Electronics / Power Management
Surveillance
Training & Education
AnalogicTech claims its AAT2554 is the industry’s first power management IC to combine a 500 mA battery charger, 250 mA step-down converter, and 300 mA low dropout (LDO) linear regulator in a tiny 3 x 4 mm package.
Part of AnalogicTech's rapidly expanding SystemPower product family, this multifunction device offers designers of ultra-low-power products a highly compact power management solution that reduces product footprint and design complexity.
All three functions are optimised for ultra-low-power applications using a single-cell Lithium-ion battery as a power source. The battery charger operates across an input voltage of 4 V to 6,5 V, while the step-down converter and LDO operate across a 2,7 V to 5,5 V input range. As a complete constant-current/constant-voltage linear device, the battery charger delivers a programmable constant current up to 500 mA. It features reverse blocking protection and high current accuracy, as well as voltage regulation, charge status, and charge termination functions.
Using a high, 1,5 MHz switching frequency, the step-down converter also helps minimise system footprint by supporting the use of extremely small external components. The converter functions using an inductor of less than 1 mm in height, while delivering 250 mA output current with efficiency as high as 96%, says the company.
The LDO integrated into the AAT2554 can supply up to 300 mA output current. It features fast line and load transient response and a low 70 μA quiescent current. To ensure safe device operation, the AAT2554 also features short-circuit, over-temperature, and current limit protection circuits.
A growing number of new portable electronic products, such as Bluetooth headsets and handheld GPS devices, operate from a single Lithium-ion cell and must efficiently charge the battery and power a small microprocessor, its I/O, and other analog circuitry.
The AAT2554 comes in a Pb-free, 16-pin, 3 x 4 mm TDFN package, specified over -40 to +85°C.
For more information contact Stephen Delport, Hi-Q Electronics, +27 (0)21 595 1307, [email protected]
Surveillance & AI roundtable DeepAlert Lytehouse Refraime SMART Security Solutions Technews Publishing
Editor's Choice Surveillance Integrated Solutions AI & Data Analytics SMART Security Solutions held an online roundtable with a few surveillance experts to explore the intersection of surveillance and AI, gaining insights into the market and how control rooms are evolving.
Read more...Rugged railway-grade DC-DC power modules iCorp Technologies
Power Electronics / Power Management
iCorp Technologies has introduced the AIPUPOWER ZCD100 and ZCD150 Series, a family of rugged DC-DC converters designed to meet the demanding electrical and environmental requirements of railway and transportation systems.
Read more...Duxbury SA Milesight distributor Duxbury Networking
News & Events Surveillance
Duxbury Networking has been appointed the exclusive distributor of Milesight surveillance solutions in South Africa, expanding its surveillance portfolio with a platform designed to deliver AI-driven analytics, rapid deployment, and open integration for modern security environments.
Read more...Four-quadrant regenerative grid simulator Conical Technologies
Power Electronics / Power Management
The IT7900EP series high-performance regenerative grid simulator from ITECH is a full four-quadrant AC grid simulator capable of both sourcing and sinking power.
Read more...90 W PSU with 150% boost capability Brabek
Power Electronics / Power Management
RECOM’s cost effective REFIN2U-S90/CL DIN rail AC/DC boasts a 90 W rating with a boost capability of 150% for 4,5 seconds to allow for surge loads.
Read more...Standalone USB PD controller Future Electronics
Power Electronics / Power Management
The STUSB4531 from STMicroelectronics is a standalone USB Power Delivery sink controller designed to streamline the implementation of USB-C power negotiation in sink devices without requiring a full software stack on a host microcontroller.
Read more...MIL-Spec DC-DC power converters Vepac Electronics
Power Electronics / Power Management
PowerGood has introduced a range of 15 W to 600 W military DC-DC power converters engineered for mission critical defence applications.
Read more...Compact power MOSFET for high current switching Future Electronics
Power Electronics / Power Management
onsemi’s NTMFSC2D6N08X is a high-performance 80 V N-channel power MOSFET engineered for demanding switching and power conversion applications.
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