LT LTC3859ALEFE#PBF

降压，升压/降压降压，降压升压，SEPIC4.5V ~ 38V

Overview

The LTC3859ALEFE#PBF is a high performance triple output (buck/buck/boost) synchronous DC/DC switching regulator controller that drives all N-channel power MOSFET stages. Constant frequency current mode architecture allows a phase-lockable switching frequency of up to 850kHz. The LTC3859ALEFE#PBF operates from a wide 4.5V to 38V input supply range. When biased from the output of the boost converter or another auxiliary supply, the LTC3859ALEFE#PBF can operate from an input supply as low as 2.5V after start-up.

Compared to the LTC3859 and the LTC3859A, the LTC3859ALEFE#PBF is fully pin-compatible, but with lower Burst Mode operation IQ (28μA with one channel on).

Features

Bulk Package
Transistor Driver Outputs
Switching Frequency: 115kHz~835kHz 350kHz~535kHz
Enable, Frequency Control, Power Good, Soft Start, Tracking
PULSE WIDTH MODULATION

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LTC3859ALEFE#PBF DC to DC converter applications.

• Servo drive system
• Digital display device
• Linear guide
• Ball screw pair
• Computer application technology
• Network technology
• Automation technology
• CMM
• Various precision measuring instruments
• Various precision measuring detectors