Analog Devices Inc. LT833x Converters
Analog Devices Inc. LT833x Converters are current-mode DC/DC converters that use a single feedback pin to generate either positive or negative output voltages. Designers can configure the devices as boost/SEPIC/flyback/inverting converters with a quiescent current as low as 6μA.
The low-ripple Burst Mode® ensures highly efficient operation while keeping the output ripple below 15mV/20mV in a typical application. LT833x’s internally compensated current mode architecture provides stable operation across switching frequencies as well as a wide range of input and output voltages.
Analog Devices Inc. LT833x Converters are available in compact packages with different power switch options. The converters are well-suited for industrial, automotive, telecom, medical diagnostic equipment, and portable electronic applications.
Features
- Wide Input Voltage Range
- 3V to 40V input voltage range (LT8330)
- 4.5V to 100V input voltage range (LT8331)
- 3V to 25V input voltage range (LT8335)
- Power Switch
- 1A, 60V power switch (LT8330)
- 0.5A, 140V power switch (LT8331)
- 2A, 28V power switch (LT8335)
- Positive or negative output voltage programming with a single feedback pin
- Fixed 2MHz switching frequency (LT8330 and LT8335)
- 100kHz to 500kHz programmable frequency (LT8331)
- Accurate 1.6V EN/UVLO pin threshold (LT8330)
- Internal compensation and soft-start
- Compact Package Options
- Thermally enhanced high voltage MSOP package (LT8331)
- Low profile (1mm) ThinSOT™ package (LT8330)
- Low profile (0.75mm) 8-lead (3mm × 2mm) DFN package (LT8330 and LT8335)
Applications
- Industrial and automotive
- Telecom
- Medical diagnostic equipment
- Portable electronics
Datasheets
LT8330 Typical Application
LT8331 Typical Application
LT8335 Typical Application
ADDITIONAL RESOURCES
How to Select a Boost Regulator
This article covers the selection criteria for a boost regulator IC (with internal MOSFET) or a controller IC (with external MOSFET) and how to use LTspice® to select appropriate peripheral components to complete the boost power stage.
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