Step-down regulator delivers 4 A in less than 3 cm2
13 August 2003
Power Electronics / Power Management
A high efficiency, 4 MHz synchronous buck regulator using a constant frequency, current mode architecture, the LTC3414, is claimed to be able to deliver up to 4 A of continuous output current at voltages as low as 0,8 V from a thermally enhanced TSSOP-20 package.
Manufactured by Linear Technology, it operates from an input voltage of 2,25 to 5,5 V, making it ideal for single cell Li-Ion or NiMH batteries, as well as more general purpose fixed rail systems. The LTC3414's switching maximum frequency of 4 MHz allows the use of small low cost capacitors and inductors with a less than 1,5 mm profile. High frequency operation eliminates switching noise from critical wireless and xDSL frequency ranges, making it suitable for xDSL modems, cellular base stations and automotive applications.
The LTC3414 integrates internal MOSFET switches with an RDS (ON) of only 0,067 Ω to deliver efficiencies up to 95%. It also uses low dropout 100% duty cycle operation to allow output voltages equal to VIN. No-load quiescent current is only 64 µA, and less than 1 µA in shutdown. For optimum efficiency at light loads, the device uses selectable burst mode operation to reduce gate charge losses. If the application is noise sensitive, the sync/mode pin can also be configured to provide forced continuous operation to reduce noise and RF interference.
Additional features include a power good voltage monitor, external synchronisation capability and thermal protection. The LTC3414 is available in a 20-lead TSSOP package.
For more information contact Memec SA, 011 897 8600.
Further reading:
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.
Read more...
The role of bidirectional charging in the evolving energy landscape
Avnet Silica
Power Electronics / Power Management
As reliance on renewable sources like wind and solar continues to grow, the need for efficient energy flow and storage solutions has become more critical than ever.
Read more...
printer friendly version