Linear Technology Corp. announces the LTC7138, a 140V input-capable high-efficiency buck converter that delivers up to 400mA of continuous output current. It operates from an input voltage range of 4V to 140V, making it suited for a wide range of telecom, industrial, avionic and automotive applications. The LTC7138 utilizes a programmable hysteretic mode design to optimize efficiency over a broad range of output currents. It utilizes an internal 1.8-Ohm power MOSFET for robust, high efficiency operation. A user-programmable output current limit can set output current from 100mA to 400mA as required by the particular application.
Recommended: Unipower Acquires Network Power Systems from Bel Fuse
The LTC7138 can be programmed with fixed output voltages of 1.8V, 3.3V or 5V, or a resistor divider can be used to program outputs from 0.8V to Vin. The LTC7138’s thermally enhanced MSOP offers additional pin spacing required for high voltage inputs. The combination of its MSOP and only four tiny externals provides a highly compact solution footprint for a wide array of applications.
Related: Medical 100W 2 x 4 Power Supplies have Long Capacitor Life
Pricing for the LTC7138EMSE, starts at $3.80 each. An industrial temperature version, the LTC7138IMSE, is guaranteed to operate from a -40 to 125 degrees C operating junction temperature and is priced at $4.18 each. Furthermore, an automotive temperature version, the LTC7138HMSE, is specified to operate from a -40 to 150 degrees C operating junction temperature and is priced at $4.43 each. Finally, a high reliability version, the LTC7138MPMSE, is tested and guaranteed to operate from a -55 to 150 degrees C operating junction temperature and is priced at $11.29 each. All pricing is for 1,000-piece quantities and all versions are available from stock.
source: http://www.powerpulse.net/story.php?storyID=31550
Comments are closed.