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LT1054,Con相关技术文章LT1054-Switched-Capacitor Volt
LT1054描述The LT®1054 is a monolithic, bipolar, switched-capacitor voltage converter and regulator. The LT1054 provides higher output current than previously available converters with significantly lower voltage losses. An adaptive switch driver scheme optimizes efficiency over a wide range of output currents. Total voltage loss at 100mA output current is typically 1.1V. This holds true over the full supply voltage range of 3.5V to 15V. Quiescent current is typically 2.5mA.
The LT1054 also provides regulation, a feature not previously available in switched-capacitor voltage converters. By adding an external resistive divider a regulated output can be obtained. This output will be regulated against changes in both input voltage and output current. The LT1054 can also be shut down by grounding the feedback pin. Supply current in shutdown is less than 100µA.
The internal oscillator of the LT1054 runs at a nominal frequency of 25kHz. The oscillator pin can be used to adjust the switching frequency or to externally synchronize the LT1054.
The LT1054 is pin compatible with previous converters such the LTC1044/LTC7660.
LT1054特点Available in Space Saving SO-8 Package Output Current: 100mA (LT1054)125mA (LT1054L) Reference and Error Amplifier for Regulation Low Loss: 1.1V at 100mA Operating Range:3.5V to 15V (LT1054)3.5V to 7V (LT1054L) External Shutdown External Oscillator Synchronization Can Be Paralleled Pin Compatible with the LTC®1044/LTC7660
Typical Application
LT1054封装N-8,SO-8
LT1054应用Voltage Inverter Voltage Regulator Negative Voltage Doubler Positive Voltage Doubler
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