LT8210 Series

100V VINand VOUTSynchronous 4-Switch Buck‑Boost DC/DC Controller with PassThru

Catalog

100V VINand VOUTSynchronous 4-Switch Buck‑Boost DC/DC Controller with PassThru

Part	Frequency - Switching [Max]	Frequency - Switching [Min]	Output Phases	Output Configuration	Function	Topology	Supplier Device Package	Synchronous Rectifier	Number of Outputs	Mounting Type	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Control Features	Output Type	Clock Sync	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]
Analog Devices LT8210IFE#PBF	400 kHz	80 kHz	1	Positive	Step-Up/Step-Down	Buck-Boost	38-TSSOP-EP		2	Surface Mount	38-TFSOP	-40 °C	125 ¯C	Enable Frequency Control Power Good Soft Start	Transistor Driver		2.8 V	100 V
Analog Devices LT8210EUJ#TRPBF	400 kHz	80 kHz	1	Positive	Step-Up/Step-Down	Buck-Boost	40-QFN (6x6)		1	Surface Mount	40-WFQFN Exposed Pad	-40 °C	125 ¯C	Current Limit Enable Frequency Control Phase Control Power Good Soft Start	Transistor Driver		2.8 V	100 V

Catalog

100V VINand VOUTSynchronous 4-Switch Buck‑Boost DC/DC Controller with PassThru

Key Features

• Pin-Selectable PassThru or Fixed Output CCM, DCM, Burst Mode®Operation

• Programmable Non-Switching PassThru Window

• 18μA PassThru Mode IQwith 99.9% Efficiency

• VINRange: 2.8V to 100V (4.5V for Start-Up)

• VOUTRange: 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

• EXTVCCLDO 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

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 GATEVCCdriver supply is regulated to 10.6V allowing the use of standard-level MOSFETs and can be powered through the EXTVCCpin for improved efficiency. The GATEVCCregulator 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.ApplicationsAutomotive, Industrial, Telecom, Avionics SystemsAutomotive Start-Stop, Emergency Call ApplicationsISO 7637, ISO 16750, MIL-1275, DO-160 Applications