Datasheet Details
| Part number | LTC3899 |
|---|---|
| Manufacturer | Linear Technology (now Analog Devices) |
| File Size | 915.04 KB |
| Description | Buck/Buck/Boost Synchronous Controller |
| Datasheet | LTC3899-LinearTechnology.pdf |
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Overview: LTC3899.
| Part number | LTC3899 |
|---|---|
| Manufacturer | Linear Technology (now Analog Devices) |
| File Size | 915.04 KB |
| Description | Buck/Buck/Boost Synchronous Controller |
| Datasheet | LTC3899-LinearTechnology.pdf |
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n Dual Buck Plus Single Boost Synchronous Controllers n Wide Bias Input Voltage Range: 4.5V to 60V n Outputs Remain in Regulation Through Cold Crank Down to a 2.2V Input Supply Voltage n Buck and Boost Output Voltages Up to 60V n Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) n No External Bootstrap Diodes Required n Low Operating IQ: 29μA (One Channel On) n 100% Duty Cycle for Boost Synchronous MOSFET n Phase-Lockable Frequency (75kHz to 850kHz) n Programmable Fixed Frequency (50kHz to 900kHz) n Very Low Dropout Operation: 99% Duty Cycle (Bucks) n Low Shutdown IQ: 3.6μA n Fixed or Adjustable Boost Output Voltage Saves IQ n Small 38-Lead 5mm × 7mm QFN and TSSOP Packages APPLICATIONS n Automotive Always-On and Start-Stop Systems n Distributed DC Power Systems n Multioutput Buck-Boost Applications The LTC®3899 is a high performance triple output (buck/ buck/boost) DC/DC switching regulator controller that drives all N-channel synchronous power MOSFET stages.
The constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz.
The LTC3899 operates from a wide 4.5V to 60V input supply range.
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