ANALOG DEVICES LTC7806RUFDM#PBF DC/DC Controller, Synchronous Boost, 3MHz, 1 to 40V, -40°C to 150°C, QFN-EP-28

LTC7806RUFDM#PBF is a high performance 2-phase single output synchronous boost converter controller that drives two N-channel power MOSFET stages out-of-phase. Its constant-frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. High-frequency 2-phase operation reduces input and output capacitor requirements and allows the use of smaller inductors compared to the single-phase equivalent. Synchronous rectification increases efficiency, reduces power losses, and eases thermal requirements, simplifying high-power boost applications. The synchronous pass-through capability also minimizes losses in automotive start-stop applications. It operates from a wide 4.5V to 40V input supply range. When biased from the boost converter output, it can operate from an input supply as low as 1V after start-up. It is used in applications such as automotive and transportation, audio and RF power amplifiers, industrial and medical, and communications.

• 2-phase operation reduces required input and output capacitance and power supply induced noise
• Synchronous operation for highest efficiency and reduced heat dissipation
• PassThru� operation: 100% duty cycle capability for synchronous MOSFET
• RSENSE or inductor DCR current sensing, spread spectrum operation
• Phase-lockable frequency range from 100KHz to 3MHz, input current monitor output
• Internal LDO powers gate drive from VBIAS or EXTVCC
• VBIAS sleep mode current is 18?A typical at (SENSE1+ <lt/> 3.2V, EXTVCC = 0V)
• VBIAS shutdown current is 1.5?A typical at (TA = 25°C, VBIAS = 12V)
• Synchronizable frequency range from 0.1 to 3MHz
• Operating temperature range from -40°C to 150°C, 28-lead plastic QFN package

Notes

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