1,5 A step-down switching regulator has only 100 µA quiescent current
8 October 2003
Power Electronics / Power Management
Linear Technology's LT1976EFE is a high voltage step-down switching regulator with Burst Mode operation that keeps quiescent current under 100 µA.
The LT1976 operates within a V(IN) range of 3,3 to 60 V, making it ideal for load dump or cold-crank conditions in automotive applications. Its 1,5 A internal switch can deliver up to 1,25 A of continuous output current to voltages as low as 1,25 V.
The LT1976 is Linear Technology's first high voltage switching regulator to offer Burst Mode operation. Its ultra-low quiescent current is well suited to applications such as automotive systems, which demand always-on systems and optimum battery life. The combination of its thermally enhanced TSSOP package and 200 kHz switching frequency keeps external inductors and capacitors small, providing a very compact footprint.
The LT1976 uses a high efficiency 60 V, 1,5 A, 0,2 Ω switch with the necessary oscillator, control and logic circuitry integrated into a single die. Special design techniques and a new high voltage process enable high efficiency over a wide input voltage range, while its current mode topology enables fast transient response and superior loop stability. Efficiency is optimised over a wide output current range by employing Burst Mode operation at low currents, using the output to bias the internal circuitry and a supply boost capacitor to fully saturate the power switch. Additional features include a power good flag with programmable threshold and time-out, as well as soft-start capability and thermal shutdown.
For more information contact Memec SA, 011 897 8600.
Further reading:
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...
How to calculate a buck converter’s inductance
Power Electronics / Power Management
In the buck circuit, the inductor design is a key element that is closely related to system efficiency, the output voltage ripple, and loop stability.
Read more...
High-current EMI filters
Accutronics
Power Electronics / Power Management
TDK has introduced 20 and 40 A, 80 V DC board-mount EMI filters, reducing differential mode conducted emissions for switching power supplies with high input current requirements.
Read more...
Isolated SMD DC-DC converters
iCorp Technologies
Power Electronics / Power Management
MinMax has launched a series of isolated SMD DC-DC converters, the MSU01 series delivering 1 W, while the MSU02 series offers 2 W output.
Read more...
Next-gen power meter
Electrocomp Express
Power Electronics / Power Management
The VT-PWR-LV is a next-gen Vista Touch power meter from Trumeter for single, split, and three-phase systems.
Read more...
Advanced PMIC for high-performance AI applications
ASIC Design Services
Power Electronics / Power Management
Microchip Technology has announced the MCP16701, a Power Management Integrated Circuit (PMIC) designed to meet the needs of high-performance MPU and FPGA designers.
Read more...
New SiC power MOSFET
Future Electronics
Power Electronics / Power Management
STMicroelectronics’ SCT012H90G3AG is a robust, automotive-grade SiC MOSFET, engineered for demanding power electronics, featuring a 900?V drain-source voltage and exceptionally low on-resistance of 12?mO at 60?A.
Read more...
Fundamental motor control design challenges and solutions
Power Electronics / Power Management
Mouser Electronics has announced a new eBook in collaboration with Qorvo, featuring industry experts providing key insights into methods, power efficiency and integration solutions available for motor control applications.
Read more...
Power management IC for battery products
Power Electronics / Power Management
The nPM1304 PMIC complements Nordic’s nPM1300 PMIC with a highly integrated, ultra-low power solution and precision fuel gauging for small size battery applications.
Read more...
Powering Innovation eBook: Changing what’s possible
Power Electronics / Power Management
This exclusive read, entitled ‘Changing what’s Possible,’ delves into how power dense Vicor modules enable many world-changing innovations across various sectors.
Read more...
printer friendly version