Source/sink step-down regulator offers adjustable current limit benefits
Additionally, the LTM8052 is capable of sourcing or sinking current while regulating an adjustable output voltage. For simple noise filtering, the LTM8052 operates at a constant frequency throughout the entire output current range.
The µModule regulator converts an input voltage between 6 V and 36 V to an adjustable output voltage between 1.2 V to 24V. In a 12 V input to 2.5 V output application, the LTM8052 achieves a peak operating efficiency of 88% at 2 A. Applications include industrial, medical imaging and communications point of load, charge balancing and Peltier thermoelectric module drivers.
The LTM8052’s 10% accurate current limit is an improvement compared with traditional step-down regulators whose current limit can be 40%-50% greater than the actual output current. With the LTM8052, a lower power and less costly upstream power supply can be installed, which would otherwise require a greater output power rating to prevent a collapse of the voltage rail under an overcurrent or short-circuit condition.
The current limit may also be compensated for temperature using a thermistor for improved thermal management. When sinking current, the µModule regulator recovers energy, transferring it to the input rail rather than dissipating it as heat in conventional methods. For noise-sensitive applications, the LTM8052 can be synchronized to an external clock frequency in the range of 100 kHz to 1 MHz. Additional features include externally adjustable soft start, adjustable switching frequency and thermal shutdown.
Availability and Pricing
The LTM8052 is packaged within a thermally efficient 11.25 mm x 15 mm x 2.82 mm LGA package. The two temperature grades, E and I for the -40 to +125°C temperature range, are available for immediate delivery from stock. Pricing starts at $13.17 each for 1,000-piece quantities.
More information about the LTM8052 at
- Intelligent power modules offer enhanced system reliability performance
- High linearity power amplifiers boost cellular base station effectiveness
- High rel capacitors resist vibration and operate to 135șC
- Power current sensing resistors have a TCR of ±0.2 ppm/°C
- Medical power supplies simplify compliance for medical device designs
- Non-dimmable LED driver fits into bulb socket
- Active surge protection filter module complies with DEF STAN 61-5 issue 6 load dump requirement
- Family of nine op amps provide low quiescent current to extend battery life
- Dual module capability boosts IGBT power semiconductors to 90-kW
- 40-V, 2-A buck-boost DC/DC converter fits in 20-lead thermally enhanced TSSOP package
- Touch screen technology goes behind the display
- Japan prepares to become world's largest solar revenue market in 2013
- Smart grid sensor market looks set to double in size by 2014
- Single-chip solar energy harvester operates wireless mesh nodes
- Bosch drives down fuel consumption - in a salami technique
- World's lowest power Bluetooth smart chip is unveiled
- Ceramic material drastically shrinks power supplies
- Lithium-ion batteries withstand 10.000 charging cycles
- Solar industry capital spending hits seven-year low in 2013 but upturn is on the cards
- 300 percent increase in battery life with low power Bluetooth wireless speaker module
- 60V Buck-Boost Controller Drives High Power LEDs
- Energy Measurement and Security for the Smart Grid
- Dangers of Aftermarket Counterfeit Battery Packs
- High Voltage Surge Stoppers Ensure Reliable Operation During Power Surges
- Motor-Drive Design made Simple
- Adaptive Cell Converter Topology Enables Constant Efficiency in PFC Applications
- Micropower Isolated Flyback Converter with Input Voltage Range from 6V to 100V
- Derating of Schottky Diodes
- Heatsink Optimization
- High Performance ZVS Buck Regulator Removes Barriers To Increased Power Throughput