austriamicrosystems has launched the AS1332-34 family of step-down DC-DC regulators optimised for noise sensitive RF power amplifiers in single cell Li-Ion battery powered applications.
The three devices in the family deliver up to 650 mA from an input voltage range of 2,7 to 5,5 V. The AS1332 is optimised for low power RF amplifiers where the output power is dynamically scaled by the supply voltage to improve battery lifetime. An external analog reference voltage is applied to the Vcon input, upon which the output voltage follows the reference voltage within a period of 20 μs (multiplied by an internal gain of 2,5), varying the output between 1,3 and 3,16 V. The output voltage of the AS1333 is fixed at 3,09 V whereas the AS1334 is available in 1,2, 1,5, 1,8, 2,5, 3,0 and 3,3 V output voltage versions.
The devices are designed for minimal space requirements in size-restricted battery-powered applications and is ideally suited for portable wireless end equipment. The 2 MHz fixed switching frequency minimises PCB footprint by allowing the use of tiny, low profile inductors and capacitors. This constant frequency switching, together with internal noise reduction circuitry, results in an output voltage ripple of less than 2 mV peak-to-peak.
With 97% peak and 94% average efficiency the new buck converter family enhances battery lifetime in any application. Moreover, if no supply is required, the devices offer a shutdown mode requiring only 100 nA current combined with an output disconnect feature. Additional features are soft start and power-ok, available on the AS1334. Safety features include current overload and thermal shutdown protection.
The AS1332 and AS1333 are available in the tiny WL-CSP 8-bump while the AS1334 comes in a TDFN(3 x 3)-10 package covering the temperature range of
The importance of power integrity Spectrum Concepts
Power Electronics / Power Management
[Sponsored] Behind every high-speed system lies the need for power integrity. Without it, even the cleanest signal paths become compromised.
Read more...Precise multi-vital sign monitoring Future Electronics
Power Electronics / Power Management
The AS7058 by ams OSRAM is an integrated multi-vital sign monitoring device, which provides a complete photoplethysmogram, electrocardiogram, body impedance sensor, and electrodermal activity sensor.
Read more...Automotive battery diagnostics tester Comtest
Power Electronics / Power Management
Midtronics’ MVT handheld battery tester is a revolutionary tool, powered by MDX-AI, which is set to redefine the standards of battery diagnostics and testing in the automotive industry.
Read more...Advanced 3-phase controllers Future Electronics
Power Electronics / Power Management
The STSPIN32G0 by STMicroelectronics is a family of highly integrated system-in-package providing solution suitable for driving three-phase brushless motors.
Read more...Converting high voltages without a transformer Altron Arrow
Editor's Choice Power Electronics / Power Management
With appropriate power converter ICs, such as the LTC7897 from Analog Devices, many applications can be suitably powered without having to use complex and cost-intensive transformers.
Read more...Reliable power for demanding applications Conical Technologies
Power Electronics / Power Management
The Mibbo Power MTR480 three-phase DIN-rail power supply is engineered to meet stringent industrial automation requirements, offering dependable performance in environments where downtime is not an option.
Read more...Powering performance and precision Future Electronics
Power Electronics / Power Management
onsemi’s innovative T10 series MOSFETs, available in 40 V and 80 V versions, are designed for high-efficiency, fast-switching, and power-dense applications.
Read more...Programmable flyback switcher ICs Future Electronics
Power Electronics / Power Management
Power Integrations has announced the release of the InnoSwitch5-Pro family of programmable flyback switcher ICs, which offer more than 95% efficiency in streamlined AC-DC converter designs.
Read more...Multilayer chip beads with 8 A rating RS South Africa
Power Electronics / Power Management
TDK Corporation has expanded its MPZ1608-PH series of large-current multilayer chip beads for automotive and commercial power supply lines.
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