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LT1054L データシート(PDF) 1 Page - Linear Technology |
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LT1054L データシート(HTML) 1 Page - Linear Technology |
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1 / 16 page  1 LT1054/LT1054L 1054lfe DESCRIPTIO FEATURES APPLICATIO S BLOCK DIAGRA Switched-Capacitor Voltage Converter with Regulator s Available in Space Saving SO-8 Package s Output Current: 100mA (LT1054) 125mA (LT1054L) s Reference and Error Amplifier for Regulation s Low Loss: 1.1V at 100mA s Operating Range:3.5V to 15V (LT1054) 3.5V to 7V (LT1054L) s External Shutdown s External Oscillator Synchronization s Can Be Paralleled s Pin Compatible with the LTC ®1044/LTC7660 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 previ- ously 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 100 µA. 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. OUTPUT CURRENT (mA) 0 1 2 50 1054 TA01• 0 25 75 100 125 TJ = 125°C TJ = 25°C TJ = –55°C LT1054 LT1054L 3.5V ≤ VIN ≤ 15V (LT1054) 3.5V ≤ VIN ≤ 7V (LT1054L) CIN = COUT = 100µF INDICATES GUARANTEED TEST POINT , LTC and LT are registered trademarks of Linear Technology Corporation. LT1054/LT1054L Voltage Loss REFERENCE OSC DRIVE DRIVE DRIVE DRIVE OSC CAP– GND CAP + FEEDBACK/ SHUTDOWN – + R R *EXTERNAL CAPACITORS 2.5V 6 1 4 3 –VOUT LT1054 • BD 5 2 8 7 Q Q VREF CIN* VIN COUT* + + s Voltage Inverter s Voltage Regulator s Negative Voltage Doubler s Positive Voltage Doubler |
同様の部品番号 - LT1054L |
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同様の説明 - LT1054L |
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