AnalogicTech has introduced the AAT1112 and AAT1145 constant-frequency current-mode step-down converters. Available in a small, 3 x 3 mm TDFN package, these converters require no external compensation components and offer designers highly compact and easy-to-implement solutions.
Many portable electronics devices contain circuitry that must be powered from a 3,3 V rail. Unlike comparable voltage-mode step-down converters, these current-mode devices enable a Lithium-ion battery input to a 3,3 V output at full rated current. These devices also minimise the size of the entire solution without forcing the system designer to iteratively determine the correct external compensation components.
The AAT1112 supplies up to 1,5 A output current from a 2,4 V to 5,5 V input while the AAT1145 supplies up to 1,2 A output current from a 2,5 V to 5,5 V input. Output voltage can be regulated from 0,6 V to VIN. The devices also help extend battery life by running at 100% duty cycle for low dropout operation and by offering up to 95% power efficiency.
Slope-compensated current-mode PWM control enables the use of inductor values as low as 1 μH, while the high 1,5 MHz and 1,4 MHz switching frequencies enable the use of small external components, resulting in a small total solution. Both devices offer integrated soft-start and short-circuit and thermal fault protection. They also feature a low shutdown current of less than 1 μA.
Rated over the -40 to +85°C temperature range, the AAT1112 comes in both a Pb-free, 3 x 3 mm, 12-lead TDFN package and Pb-free, 2,75 x 3 mm, 12-lead TSOPJW package. The AAT1145 comes in a Pb-free, 3 x 3 mm, 10-lead TDFN package.
High-precision current transducer
Power Electronics / Power Management
Danisense announces its new high-precision DP12IP current transducer designed for isolated DC and AC current measurement in demanding PCB-mounted power electronics applications.
Read more...Secure holder for protected 18650 batteries
Power Electronics / Power Management
Designed for protected 18650 batteries up to 70 mm long, the holder offers secure retention for portable, industrial, and embedded applications.
Read more...More room to scale Altron Arrow
Power Electronics / Power Management
With the latest STM32H5 lines from STMicroelectronics, you can now scale within the same platform, from a compact 1 Mbyte device to higher-memory MCUs for graphics-rich and feature-heavy designs.
Read more...Surface mount power amplifier for high-power applications RF Design
Power Electronics / Power Management
The GNA-63-5W+, from Mini-Circuits, is a GaN MMIC Power Amplifier (PA) designed for demanding RF applications requiring high efficiency, excellent linearity, and a compact footprint.
Read more...1200 V QSiC modules
Power Electronics / Power Management
SemiQ Inc has launched the QSiC Dual3, a family of 1200 V half-bridge MOSFET modules for motor drives in data centre cooling systems, grid converters in energy storage systems, and industrial drivers.
Read more...Expanded range of high-thermal-performance QSiC modules
Power Electronics / Power Management
SemiQ’s half-bridge series for data centre power converters and industrial motor drives features low RDSON SiC MOSFETs and parallel SBD diodes for best-in-class power density and conversion efficiency.
Read more...Transporting lithium batteries and IoT devices
Power Electronics / Power Management
With billions of rechargeable and non-rechargeable lithium cells and batteries powering most of the world’s consumer and industrial electronic devices, shipping them to customers through vast global logistics chains is often an overlooked topic.
Read more...Setting a new benchmark for high-power DC load testing Conical Technologies
Test & Measurement Power Electronics / Power Management
The new ITECH IT8900G/L high-speed, high-power DC electronic load offers a powerful combination of speed, scalability, precision and high-power density.
Read more...Quality batteries are critical for IIoT Uniross Batteries
Power Electronics / Power Management
Batteries intended for use in industrial operations must indeed offer complete reliability under extreme environmental conditions, resistance to vibration and harsh environments.
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