36V, 2A(IOUT), 500kHz Step-Down DC/DC Converter in 3mm x 3mm DFN

MILPITAS, CA, (PresseBox) - Linear Technology Corporation announces the LT1912, a 2A, 36V step-down switching regulator packaged in a 3mm x 3mm DFN (or MSOP-10E). The LT1912’s 3.6V to 36V input voltage range makes it ideal for load dump and cold-crank conditions found in automotive applications. Its 3.2A internal switch can deliver up to 2A of continuous output current to voltages as low as 0.79V. Switching frequency is user-programmable from 200kHz to 500kHz, optimizing efficiency while keeping external components small. The combination of its 3mm x 3mm DFN-10 package (or thermally enhanced MSOP-10E) and tiny externals provide a very compact, thermally efficient footprint.

The LT1912 utilizes a high efficiency 3.2A, 0.25Ohm switch, with the necessary boost diode, oscillator, control and logic circuitry integrated on-chip. Special design techniques and a new high voltage process enable high efficiency over a wide input voltage range while the LT1912’s current mode topology enables fast transient response and excellent loop stability. Other features include external synchronization (from 250kHz to 500kHz), a power good flag and soft-start capability.

The LT1912IDD and LT1912IMSE are tested and guaranteed to operate from a -40°C to 125°C operating junction temperature. All versions are available from stock.

Summary of Features: LT1912
- Wide Input Range: Operation From 3.6V to 36V
- 2A Maximum Output Current
- Adjustable Switching Frequency: 200kHz to 500kHz
- Low Shutdown Current: ISD < 1uA
- Integrated Boost Diode
- Synchronizable Between 250kHz to 500kHz
- Saturating Switch Design: 0.25ohm On-Resistance
- 0.790V Feedback Reference Voltage
- Output Voltage: 0.79V to 20V
- Soft-Start Capability
- Small 10-Pin Thermally Enhanced MSOP & 3mm × 3mm DFN Packages


Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, uModule(TM) products, and many other analog functions. Applications for Linear Technology's high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems. For more information, visit www.linear.com.

LT, LTC, LTM, Burst Mode and are registered trademarks and uModule is a trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.

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