Analog Devices

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

The LT8228 is a 100V bidirectional constant-current or constant-voltage synchronous buck or boost controller with independent compensation network. The direction of the power flow is automatically determined by the LT8228 or externally controlled. The input and output protection MOSFETs protect against negative voltages, control inrush currents and provide isolation between terminals under fault conditions such as switching MOSFET shorts. In buck mode, the protection MOSFETs at the V1terminal prevents reverse current. In boost mode, the same MOSFETs regulate the output inrush current and protects itself with an adjustable timer circuit breaker.The LT8228 offers bidirectional input and output current limit as well as independent current monitoring. Masterless, fault tolerant current sharing allows any LT8228 in parallel to be added or subtracted while maintaining current sharing accuracy. Internal and external fault diagnostics and reporting are available via theFAULTandREPORTpins. The LT8228 is available in a 38-lead TSSOP package.ApplicationsDual Battery Automotive and Industrial SystemsHigh Power System Backup and Supply Stabilization"N+1" Redundant, High Reliability Power SuppliesPower Interrupt Protection System

The LT8253/LT8253A are synchronous 4-switch buck-boost controllers optimized for automotive USB-C power delivery. The LT8253/LT8253A are fully compliant to the USB Power Delivery (PD) specification when used in conjunction with a USB Type-C or PD port controller. The output voltage slew rate can be controlled through the FB pin. The LT8253 can deliver up to 100W output power with 98% peak efficiency when running below the AM band. The LT8253A can deliver up to 60W output power with 95% peak efficiency when running above the AM band.The LT8253/LT8253A support single buck-boost output for 1 Type-C port with power good flag. Over-current, over-voltage, and short-circuit protections are also available.APPLICATIONSAutomotive USB-C Power DeliveryGeneral Purpose Voltage Regulator

The LT8300 is a micropower high voltage isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 260mA, 150V DMOS power switch is integrated along with all high voltage circuitry and control logic into a 5-lead ThinSOT™package.The LT8300 operates from an input voltages range of 6V to 100V and can deliver up to 2W of isolated output power. The high level of integration and the use of boundary and low ripple burst modes result in a simple to use, low component count, and high efficiency application solution for isolated power delivery.ApplicationsIsolated Telecom, Automotive, Industrial, Medical Power SuppliesIsolated Auxiliary/Housekeeping Power Supplies

The LT8301 is a micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 1.2A, 65V DMOS power switch is integrated along with all high voltage circuitry and control logic into a 5-lead ThinSOT™package.The LT8301 operates from an input voltage range of 2.7V to 42V and can deliver up to 6W of isolated output power. The high level of integration and the use of boundary and low ripple burst modes result in a simple to use, low component count, and high efficiency application solution for isolated power delivery.ApplicationsIsolated Telecom, Automotive, Industrial, Medical Power SuppliesIsolated Auxiliary/Housekeeping Power Supplies

The LT8302/LT8302-3 is a monolithic micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with two external resistors and a third optional temperature compensation resistor. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 3.6A, 65V DMOS power switch is integrated along with all the high voltage circuitry and control logic into a thermally enhanced 8-lead SO package.The LT8302/LT8302-3 operates from an input voltage range of 3V to 42V and delivers up to 18W of isolated output power. The high level of integration and the use of boundary and low ripple burst modes result in a simple to use, low component count, and high efficiency application solution for isolated power delivery.ApplicationsIsolated Automotive, Industrial, Medical Power SuppliesIsolated Auxiliary/Housekeeping Power Supplies

The LT8303 is a micropower high voltage isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 450mA, 150V DMOS power switch is integrated along with all high voltage circuitry and control logic into a 5-lead thinSOT™package.The LT8303 operates from an input voltages range of 5.5V to 100V and can deliver up to 5W of isolated output power. The high level of integration and the use of boundary and low ripple burst modes result in a simple to use, low component count, and high efficiency application solution for isolated power delivery.APPLICATIONSIsolated Telecom, Datacom, Automotive, Industrial, and Medical Power SuppliesIsolated Auxiliary/Housekeeping Power Supplies

The LT8304/LT8304-1 are monolithic micropower isolated flyback converters. By sampling the isolated output voltage directly from the primary-side flyback waveform, the parts require no third winding or opto-isolator for regulation. The output voltage is programmed with two external resistors and a third optional temperature compensation resistor. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 2A, 150V DMOS power switch is integrated along with all the high voltage circuitry and control logic into a thermally enhanced 8-lead SO package.The LT8304/LT8304-1 operate from an input voltage range of 3V to 100V and deliver up to 24W of isolated output power. The high level of integration and the use of boundary and low ripple Burst Mode operation result in a simple to use, low component count, and high efficiency application solution for isolated power delivery. The LT8304-1 is specially optimized for high step-up output applications.ApplicationsIsolated Automotive, Industrial, Medical, Telecom Power SuppliesIsolated Auxiliary/Housekeeping Power Supplies

The LT8306 is a micropower isolated flyback controller in a 6-lead ThinSOT™package. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple burst mode operation maintains high efficiency at light load while minimizing the output voltage ripple. The LT8306 drives a low side N-channel power MOSFET with 8V gate drive.The LT8306 has a wide input voltage range of 4.5V to 60V. The high level of integration and the use of boundary and low ripple burst modes result in a simple-to-use, low component count, and high efficiency application solution for isolated power delivery.APPLICATIONSIsolated Telecom, Automotive, Industrial, Medical Power SuppliesIsolated Auxiliary/Housekeeping Power Supplies

The LT8309 is a secondary-side synchronous rectifier driver that replaces the output rectifier diode in a flyback topology. By replacing the diode with a N-channel MOSFET, applications are no longer restricted by the heat constraints of the output diode. The IC replicates the behavior of a diode by sensing the drain-to-source voltage to determine when the current becomes negative. The LT8309's low minimum on- and off-times help improve noise immunity.The fast propagation delay of 26ns allows applications to operate in discontinuous conduction mode (DCM) and critical conduction mode (CrCM). The gate driver features a 0.8Ω pull-down device for fast turn-offs. The 40V VCCrating allows the part to be driven from the output voltage or the rectified drain voltage of the MOSFET. A low quiescent current of 400μA maximizes efficiency at low output currents.ApplicationsHigh Output Current FlybacksHigh Efficiency Flybacks