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Linear Technology: DC/DC Controllers Generate Positive or Negative Regulated Voltage
Datum: Dienstag, dem 13. April 2010
Thema: Rom Infos
MILPITAS, CA April 12, 2010 Linear Technology Corporation announces the H- and
MP-grade versions of the LT3757 and LT3758 wide input range DC/DC controllers for boost, flyback, SEPIC and inverting power supply applications. These devices are capable of generating either a positive or negative regulated output voltage with a single device by having two internal voltage feedback error amplifiers and reference voltages. These H- and MP-grade versions are tested and guaranteed to operating junction temperature ranges from -40°C to 150°C and -55°C to 125°C, respectively.
The LT3757 operates with an input voltage ranging from 2.9V to 40V and the LT3758 operates over a 5.5V to 100V input voltage range. The devices achieve efficiencies up to 96%, making them well suited for industrial, automotive, military, medical and telecom applications. With a programmable fixed or synchronizable operating frequency from 100kHz to 1MHz, designers can choose a wide range of inductors and capacitors to optimize size, performance and cost. The fixed frequency, current mode control results in stable operation over a wide range of supply and output voltages, along with all ceramic capacitor designs, enabling a smaller solution size. Additional features include programmable soft-start, input undervoltage lockout, output overvoltage and overcurrent protection.
Both grades are available in the thermally enhanced MSOP-10 package. For more information, visit www.linear.com.
Summary of Features: LT3757/LT3758
For Boost, Flyback, SEPIC & Inverting Applications
LT3757 Input Operating Voltage: 2.9V to 40V
LT3758 Input Operating Voltage: 5.5V to 100V
Positive or Negative Output Voltage Setting with a Single Feedback Pin
Selectable Fixed 100kHz to 1MHz Operating Frequency
Synchronizable to an External Cloc
Integrated Low-Side Driver
True Current Mode Control
Low Shutdown Current < 1ľA
Output Overvoltage & Overcurrent Protection
Programmable Input Undervoltage Lockout with Hysteresis
H-Grade: -40°C to 150°C Operating Junction Temperature
MP-Grade: -55°C to 125°C Operating Junction Temperature
MILPITAS, CA April 12, 2010 Linear Technology Corporation announces the H- and
MP-grade versions of the LT3757 and LT3758 wide input range DC/DC controllers for boost, flyback, SEPIC and inverting power supply applications. These devices are capable of generating either a positive or negative regulated output voltage with a single device by having two internal voltage feedback error amplifiers and reference voltages. These H- and MP-grade versions are tested and guaranteed to operating junction temperature ranges from -40°C to 150°C and -55°C to 125°C, respectively.
The LT3757 operates with an input voltage ranging from 2.9V to 40V and the LT3758 operates over a 5.5V to 100V input voltage range. The devices achieve efficiencies up to 96%, making them well suited for industrial, automotive, military, medical and telecom applications. With a programmable fixed or synchronizable operating frequency from 100kHz to 1MHz, designers can choose a wide range of inductors and capacitors to optimize size, performance and cost. The fixed frequency, current mode control results in stable operation over a wide range of supply and output voltages, along with all ceramic capacitor designs, enabling a smaller solution size. Additional features include programmable soft-start, input undervoltage lockout, output overvoltage and overcurrent protection.
Both grades are available in the thermally enhanced MSOP-10 package. For more information, visit www.linear.com.
Summary of Features: LT3757/LT3758
For Boost, Flyback, SEPIC & Inverting Applications
LT3757 Input Operating Voltage: 2.9V to 40V
LT3758 Input Operating Voltage: 5.5V to 100V
Positive or Negative Output Voltage Setting with a Single Feedback Pin
Selectable Fixed 100kHz to 1MHz Operating Frequency
Synchronizable to an External Cloc
Integrated Low-Side Driver
True Current Mode Control
Low Shutdown Current < 1ľA
Output Overvoltage & Overcurrent Protection
Programmable Input Undervoltage Lockout with Hysteresis
H-Grade: -40°C to 150°C Operating Junction Temperature
MP-Grade: -55°C to 125°C Operating Junction Temperature
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