Analog Devices LT8210

Description

The LT8210 is a 4-switch synchronous buck-boost DC/DC controller that can operate in passthru, forced continuous, pulse-skipping and Burst Mode® operation. PassThru is a feature that passes the input directly to the output when the input is within a user programmable window. PassThru mode eliminates switching losses and EMI along with maximizing efficiency. For input voltages above or below the passthru window, the buck or boost regulation loops maintain the output at the set maximum or minimum values, respectively.The GATEVCC driver supply is regulated to 10.6V allowing the use of standard-level MOSFETs and can be powered through the EXTVCC pin for improved efficiency. The GATEVCC regulator is back-drive-protected to ride through input brownouts while maintaining regulation. Optional reverse input protection down to –40V can be implemented with the addition of a single N-channel MOSFET. The LT8210 includes a precision current sense amplifier that can accurately monitor and limit output or input average current.

Features

• Pin-Selectable PassThru or Fixed Output CCM, DCM, Burst Mode® Operation
• Programmable Non-Switching PassThru Window
• 18μA PassThru Mode IQ with 99.9% Efficiency
• VIN Range: 2.8V to 100V (4.5V for Start-Up)
• VOUT Range: 1V to 100V
• Reverse Input Protection to –40V
• ±1.25% Output Voltage Accuracy (–40°C to 125°C)
• ±3% Accurate Current Monitoring
• ±5% Accurate Current Regulation
• 10V Quad N-Channel MOSFET Gate Drivers
• EXTVCC LDO Powers Drivers from VOUT/External Rail
• ±20% Cycle-by-Cycle Inductor Current Limit
• No Top MOSFET Refresh Noise in Buck or Boost
• Fixed/Phase-Lockable Frequency: 80kHz to 400kHz
• Spread Spectrum Frequency Modulation for Low EMI
• Power Good Output Voltage/Overcurrent Monitor
• Available in a 38-Lead TSSOP and 40-Lead (6mm x 6mm) QFN Packages

Typical applications

• ISO 7637, ISO 16750, MIL-1275, DO-160 Applications
• Automotive, Industrial, Telecom, Avionics Systems, Automotive Start-Stop, Emergency Call Applications

More information

• Datasheet
• IC product information