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Part Number: LT1618
Description: The LT®1618 step-up DC/DC converter combines a traditional voltage feedback loop and a unique curr...
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LT1618
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DataSheet
General Description
LT1618 General Description
The LT®1618 step-up DC/DC converter combines a traditional voltage feedback loop and a unique current feedback loop to operate as a constant-current, constant-voltage source. This fixed frequency, current mode switcher operates from a wide input voltage range of 1.6V to 18V, and the high switching frequency of 1.4MHz permits the use of tiny, low profile inductors and capacitors.
The current sense voltage is set at 50mV and can be adjusted using the IADJ pin. Available in the 10-Pin MSOP package, the LT1618 provides a complete solution for constant-current applications.
LT1618 Maximum Ratings
VIN, SHDN Voltage ................................................... 18V
SW Voltage .............................................................. 36V
ISP, ISN Voltage ...................................................... 36V
IADJ Voltage ............................................................... 6V
FB Voltage .............................................................. 1.5V
VC Voltage .............................................................. 1.5V
Junction Temperature ........................................... 125°C
Operating Temperature Range (Note 2) .. 40°C to 85°C
Storage Temperature Range ................. 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
LT1618 Features
Accurate Input/Output Current Control: ±5% Over Temperature
Accurate Output Voltage Control: ±1%
Wide VIN Range: 1.6V to 18V
1.4MHz Switching Frequency
High Output Voltage: Up to 35V
Low VCESAT Switch: 200mV at 1A
Tiny 10-Pin MSOP Package
Accurate Output Voltage Control: ±1%
Wide VIN Range: 1.6V to 18V
1.4MHz Switching Frequency
High Output Voltage: Up to 35V
Low VCESAT Switch: 200mV at 1A
Tiny 10-Pin MSOP Package
LT1618 Typical Application
LED Backlight Drivers
USB Powered Boost/SEPIC Converters
Input Current Limited Boost/SEPIC Converters
Battery Chargers
USB Powered Boost/SEPIC Converters
Input Current Limited Boost/SEPIC Converters
Battery Chargers
LT1618 Connection Diagram
LT1618
PDF/DataSheet Download
- Datasheet: LT1618
- File Size: 207176 KB
- Manufacturer: Linear
- Click here to Download
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