Analog Devices Inc./Maxim Integrated

TheLT®8210-1is a 4-switch synchronous buck-boost DC/DC controller that can operate in pass-thru mode, forced continuous conduction, or pulse-skipping mode. Pass-Thru is a feature that passes the input directly to the output when the input is within a user programmable window. Pass-Thru mode eliminates switching losses and EMI while maximizing efficiency. For input voltages above or below the pass-thru window, the buck or boost regulation loops maintain the output at the set maximum or minimum values, respectively. The LT8210-1 is pin compatible with the LT8210. The IMON pin on the LT8210-1 has an ISHARE function, which allows for masterless current sharing.Multiple LT8210-1 can be connected in parallel for higher output current and reduced voltage ripple. A masterless closed loop current sharing loop balances the current per phase and allows phase shedding. Optional reverse input protection down to -40V can be implemented with the addition of a single N-channel MOSFET. The LT8210-1 includes a precision current sense amplifier that can accurately monitor and limit output or input average current.APPLICATIONSIndustrial, Telecom,Avionics SystemsAutomotiveQualification in Progress

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 LT8277 is a 2-phase constant frequency, current mode boost and SEPIC controller that drives N-channel power MOSFETs. The 2-phase interleaved operation reduces system filtering capacitance requirements. An internal LDO regulator draws power from VINor VOUTto provide a 5V supply for the gate drivers. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of the LT8277 can be set over a 100kHz to 2MHz range with an external resistor or can be synchronized to an external clock using the SYNC pin. The CLKOUT and SYNC pins allow multiple LT8277 devices to work together, enabling 4- or 8-phase operation.The LT8277 output voltage ranges from 9V to 60V, which can be set through the SPI interface. A window comparator on the VOUTpin reports via the PGOOD pin, providing an output voltage status indication. The device is available in a 20-Lead 3mm × 4mm side-solderable QFN package.ApplicationsAutomotive, Telecom, and Industrial Power Supplies

LT8292 is a synchronous 4-switch buck-boost controller that regulates output voltage and output or input current from an input voltage above, below, or equal to the output voltage. The proprietary buck-boost peak current mode architecture allows adjustable and phase-lockable 100kHz to 650kHz fixed frequency operation, or internal spread spectrum operation for low electromagnetic interference (EMI). When the output is regulated above 5V, the LT8292 can operate from an input supply as low as 3V after start-up.The low quiescent current at no-load extends operating run time in battery-powered systems. At light load, either forced continuous, pulse-skipping, or low-ripple Burst Mode can be selected.The LT8292 features split pull-up/pull-down gate drivers and four selectable dead time settings with shootthrough protection, which allows both optimized efficiency and EMI. Fault protection is also provided to detect output short-circuit conditions, during which the LT8292 runs in low-duty cycle auto-retry mode.APPLICATIONSAutomotive, Industrial, Telecom SystemsGeneral Purpose Buck-Boost Power SuppliesHigh-Power Battery-Powered Systems

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