Power Electronics / Power Management


Charger, converter and regulator combined in tiny package simplifies portable design

18 October 2006 Power 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]



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Cutting-edge solutions for Africa’s clean energy future
Power Electronics / Power Management
As Africa pushes towards reliable, affordable, and sustainable energy, Sungrow is driving transformation with cutting-edge innovations that enhance grid stability, reduce energy costs, and expand access to clean power.

Read more...
Transformer protection is a critical safeguard for municipal power stability
Power Electronics / Power Management
Transformer protection is not just a technical requirement; it is a vital component in ensuring the resilience and operational integrity of South Africa’s municipal power infrastructure.

Read more...
Gallagher Security achieves ISO 27001 recertification
News & Events Training & Education
Gallagher Security has successfully achieved certification to the updated ISO/IEC 27001:2022 standard for Information Security Management Systems (ISMS). This accomplishment builds on previous certifications and reflects a continued commitment to the highest standards of information security.

Read more...
A new generational framework
Editor's Choice Training & Education
Beyond Generation X, and Millennials, Dr Chris Blair discusses the seven decades of technological evolution and the generations they defined, from the 1960’s Mainframe Cohort, to the 2020’s AI Navigators.

Read more...
Reliable power solution
Conical Technologies Power Electronics / Power Management
The Mibbo MLD-120W-xxVx is a robust DIN-rail mounted DC-DC converter with a 120 W output capacity specifically designed for industrial and automation applications.

Read more...
Easing the path for IPPs navigating local energy regulations
Power Electronics / Power Management
Independent Power Producers (IPPs) and developers venturing into South Africa’s renewable energy sector face an onerous and challenging regulatory landscape characterised by uncertainty in securing grid connections and considerable development costs.

Read more...
Wide input voltage buck-boost converter
Altron Arrow Power Electronics / Power Management
The MAX77859 from Analog Devices is a high-efficiency, high-performance buck-boost converter targeted for systems requiring a wide input voltage range of between 2,5 and 22 V.

Read more...
High-density power module for AI at the edge applications
Altron Arrow Power Electronics / Power Management
The MCPF1412 power module from Microchip has integrated I2C and PMBus interfaces for flexible configuration and monitoring.

Read more...
Development kit for TI’s SN6507
Power Electronics / Power Management
This comprehensive solution is designed to help engineers evaluate the performance of TI’s SN6507 transformer driver for isolated power supplies.

Read more...
Next generation of AI-powered video telematics
IoT & Automation Surveillance Transport (Industry)
Webfleet, Bridgestone’s fleet management solution in South Africa, has launched Webfleet Video 2.0, an AI-powered solution designed to enhance fleet safety, security, compliance with local regulations and operational efficiency through real-time video insights.

Read more...