DC-DC step-down regulators
19 March 2008
Power Electronics / Power Management
The LTM8020, LTM8022 and LTM8023 from Linear Technology are three μModule regulators said to require minimal design effort and only a few inexpensive passive components to make a complete power supply. The modules are small, accept a wide input operating range and can produce 0,2 A, 1 A and 2 A, respectively.
The LTM8020 is small, with a package measuring only 6,25 x 6,25 x 2,32 mm, but it accepts a wide 4 V to 36 V input voltage range, and can produce up to 1 W for output voltages between 1,25 V and 5 V at 200 mA. At light loads, Burst Mode operation keeps quiescent current to 50 μA at no load. The current draw is less than 1 μA when shut down. Being a self-contained design, it can also be configured to generate a negative voltage.
The LTM8022 comes in a larger 11,25 x 9 x 2,82 mm package than the LTM8020, but boasts a wider input range, 3,6 V to 36 V, and output range, 0,8 V to 10 V, for loads up to 1 A. It also includes more control features, including a RUN/SS pin, synchronisation, user adjustable switching frequency and a SHARE pin for paralleling modules. It also employs Burst Mode operation, drawing only 50 μpA quiescent current at no load while maintaining only 30 mV of output voltage ripple. Like the LTM8020, the quiescent current when shut down is less than 1 μA.
The LTM8023 is the big brother of the LTM8022, capable of producing up to 2 A of output current, while boasting the same input, output voltage range and control features as the 8022. It also has the same footprint and pin pattern, making it a suitable drop-in replacement should more current be required after a design has been finalised.
Further reading:
Power efficiency and robustness in electronics design
Power Electronics / Power Management
Mouser Electronics recently announced a new eBook in collaboration with Analog Devices highlighting essential strategies for optimising power systems.
Read more...
USB Type-C-powered controllers
Future Electronics
Power Electronics / Power Management
Diodes Incorporated has released two USB Type-C PD 3.1 extended power range sink controllers that can be embedded into battery-powered devices.
Read more...
Multicell battery monitoring
Altron Arrow
Power Electronics / Power Management
The LTC6811 from Analog Devices is a multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1,2 mV.
Read more...
Full telemetry in tiny DC-DC converters
RS South Africa
Power Electronics / Power Management
The FS160* series of µPOL DC-DC converters from TDK all offer full telemetry, provide increased performance, and are remarkable for extraordinary power density in the smallest sizes.
Read more...
Power IC supplies 1650 W
EBV Electrolink
Power Electronics / Power Management
Power Integrations has announced a two-fold increase in power output from the HiperLCS-2 chipset with the new device now being able to deliver up to 1650 W of continuous output power.
Read more...
High-voltage step-down DC-DC converter
Altron Arrow
Power Electronics / Power Management
The MAX17793 is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operating over an input voltage range of 3 to 80 V.
Read more...
High-voltage contactors
RS South Africa
Power Electronics / Power Management
TDK Corporation has announced two new additions to its high-voltage contactor portfolio for harsh environments: the HVC43MC with integrated mirror contact and the HVC45 with enhanced short-circuit current handling capability.
Read more...
Chokes rated at 36 A
RS South Africa
Power Electronics / Power Management
TDK Corporation has launched the EPCOS SurfIND series, a new range of current-compensated ring core double chokes for high currents and surface mounting.
Read more...
RF arrestor provides robust protection
RFiber Solutions
Power Electronics / Power Management
NexTek’s range of coaxial RF surge and lightning arrestors are designed and built to provide robust protection for any radio or coaxial RF transmission application.
Read more...
Wide-Bandgap Developer Forum 2025
Power Electronics / Power Management
To give designers the ultimate in design flexibility, the entire range of WBG power semiconductors will be provided including discretes, modules, and highly integrated solutions ranging from 40 V to 700 V for GaN and 400 V to 3,3 kV for SiC.
Read more...
printer friendly version