Texas Instruments announced the 650-mA LM25017, 300-mA LM25018 and 100-mA LM25019 Fly-Buck converters. The three TI 48-V synchronous buck regulators feature integrated high-side and low-side MOSFETs for single- and multi-output power supplies. The new Fly-Buck converters are available in volume now. The devices are offered in thermally-enhanced 8-pin LLP and PSOP packages. The LM25017 is priced at $1.25, the LM25018 is $1.12 and the LM25018 is $1.00 in 1,000-unit quantities. AECQ-100 qualified versions will be available in May 2013.
The TI synchronous buck regulators feature constant on-time (COT) control architecture that reduces board space by up to 40% when compared with traditional designs that require multiple DC-DC converters. The Fly-Buck converters simplify and speed high-voltage DC/DC designs in industrial and automotive systems.
The LM25017, LM25018 and LM25019 enable non-isolated voltage regulators and multi-output solutions from input voltages as high as 48 V. Pin-compatible LLP and PSOP packaging offers a scalable solution that covers a wide range of power requirements. Each Fly-Buck converter can be configured to provide positive and negative voltage rails, or isolated multiple outputs with excellent cross-regulation.
TI LM25017 LM25018, LM25019 Fly-Buck Converters Features
- Wide 9V to 48V Input Range (LM25018, LM25019)
- Integrated 48V, High and Low Side Switches
- No Schottky Required
- Constant On-time Control
- No Loop Compensation Required
- Ultra-Fast Transient Response
- Nearly Constant Operating Frequency
- Intelligent Peak Current Limit
- Adjustable Output Voltage from 1.225V
- Precision 2% Feedback Reference
- Frequency Adjustable to 1MHz
- Adjustable Undervoltage Lockout (UVLO)
- Remote Shutdown
- Thermal Shutdown
More info: Texas Instruments Step-Down (Buck) Converter