2.5A Supercapacitor Backup Power Manager Features: 2.5A Step-Down Supercapacitor Charger and 2.5A Step-Up Backup Supply 6.5A Switches for 2.5A Backup from One Supercapacitor or Two in Series Input Current Limit Prioritizes Load over Charge Current Input Disconnect Switch Isolates Input During Backup Automatic Seamless Switch-Over to Backup Mode Internal Supercapacitor Balancer (No External Resistors) Programmable Charge Current and Charge Voltage Input Power Fail Indicator System Power Good Indicator Optional OVP Circuitry Protects Device to >60V Constant Frequency Operation Thermally Enhanced 24-Lead 4mm × 5mm QFN Package

65V, 8A Synchronous Step-Down Silent Switcher 2 with 2.5A Quiescent Current Features: Silent Switcher®2 Architecture Ultralow EMI Emissions on Any PCB Eliminates PCB Layout Sensitivity Internal Bypass Capacitors Reduce Radiated EMI Optional Spread Spectrum Modulation High Efficiency at High Frequency Up to 95% Efficiency at 1MHz, 12VIN to 5VOUT Up to 94% Efficiency at 2MHz, 12VIN to 5VOUT Wide Input Voltage Range: 3.4V to 65V Ultralow Quiescent Current Burst Mode Operation 2.5μA IQ Regulating 12VIN to 3.3VOUT (LT8645S) Output Ripple < 10mVP-P External Compensation: Fast Transient Response and Current Sharing (LT8646S) Fast Minimum Switch On-Time: 40ns Low Dropout Under All Conditions: 60mV at 1A Adjustable and Synchronizable: 200kHz to 2.2MHz Peak Current Mode Operation Output Soft-Start and Tracking Small 32-Lead 6mm × 4mm LQFN Package AEC-Q100 Qualified for Automotive Applications

25A, Dual PolyPhase Regulator with Digital Power System Management Features: PMBus/I2C Compliant Serial Interface Telemetry Read-Back Includes VIN, IIN, VOUT, IOUT, Temperature and Faults Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV/OC Sub-Milliohm DCR Current Sensing Digitally Adjustable Loop Compensation Parameters 0.5% Output Voltage Accuracy Over Temperature Integrated Input Current Sense Amplifier Internal EEPROM with ECC and Fault Logging Integrated N-Channel MOSFET Gate Drivers

3GHz to 20GHz Microwave Mixer with Wideband DC to 6GHz IF Features:Integrated LO Buffer: 0dBm LO Drive50 Wideband Matched RF and LO PortsWide IF Bandwidth: DC to 6GHzUpconversion or DownconversionHigh IIP3:+22.5dBm at 10GHz+18.3dBm at 17GHz+14.6dBm Input P1dB at 10GHz8dB Conversion Loss at 10GHz3.3V/132mA SupplyFast Turn ON/OFF for TDD Operation3mm × 2mm, 12-Lead QFN Package

Very Low Noise, Low Distortion Active RC Quad Universal Filter Features: Continuous Time—No Clock Four 2nd Order Filter Sections, 20kHz to 300kHz Center Frequency Butterworth, Chebyshev, Elliptic or Equiripple Delay Response Lowpass, Bandpass, Highpass Responses 99dB Typical S/N, ±5V Supply (Q = 1) 93dB Typical S/N, Single 5V Supply (Q = 1) Rail-to-Rail Input and Output Voltages DC Accurate to 3mV (Typ) ±0.5% Typical Center Frequency Accuracy “Zero-Power” Shutdown Mode Single or Dual Supply, 5V to 10V Total Resistor-Programmable fO, Q, Gain

Precision, Low Power Rail-to-Rail Input/Output Differential Op Amp/SAR ADC Driver Features: 1mA Supply Current Single 2.8V to 5.25V supply Fully Differential Input and Output 200μV Max Offset Voltage 260nA Max Input Bias Current Fast Settling: 550ns to 18-Bit, 8VP-P Output Low Distortion: –116dBc at 1kHz, 8VP-P Rail-to-Rail Inputs and Outputs 3.9nV/√Hz Input-Referred Noise 180MHz Gain-Bandwidth Product 34MHz –3dB Bandwidth Low Power Shutdown: 70μA 8-Lead MSOP and 3mm × 3mm 8-Lead DFN Packages

1.8A Quiescent Current, 15V, 300mA Synchronous Step-Down DC/DC Converter Features: Ultralow Quiescent Current: 1.8μA Synchronous Rectification: Efficiency Up to 95% Wide VIN Range: 2.5V to 15V Wide VOUT Range: 0.6V to 13.8V 300mA Output Current User-Selectable Automatic Burst Mode® or Forced Continuous Operation Accurate and Programmable RUN Pin Threshold 1.2MHz Fixed Frequency PWM Internal Compensation Power Good Status Output for VOUT Available in Thermally Enhanced 3mm × 3mm × 0.75mm, 10-Pin DFN and 10-Pin MSOP Packages

isoSPI Isolated Communications Interface Features: AEC-Q100 Qualified for Automotive Applications 1Mbps Isolated SPI Data Communications Simple Galvanic Isolation Using Standard Transformers Bidirectional Interface Over a Single Twisted Pair Supports Cable Lengths Up to 100 Meters Very Low EMI Susceptibility and Emissions Configurable for High Noise Immunity or Low Power Engineered for ISO26262 Compliant Systems Requires No Software Changes in Most SPI Systems Ultralow, 2µA Idle Current Automatic Wake-Up Detection Operating Temperature Range: –40°C to 125°C 2.7V to 5.5V Power Supply Interfaces to All Logic from 1.7V to 5.5V Available in 16-Lead QFN and MSOP Packages

100VIN Forward Converter Controller Features:Input Voltage Range: 6V to 100VDuty Mode Control Regulates an Isolated Output without an OptoHigh Efficiency Synchronous ControlShort-Circuit (Hiccup Mode) Overcurrent ProtectionProgrammable OVLO and UVLO with HysteresisProgrammable Frequency (100kHz to 500kHz)Synchronizable to an External ClockPositive or Negative Polarity Output Voltage Feedback with a Single FBX PinProgrammable Soft-StartLow Shutdown Current < 1μAAvailable in FE20 TSSOP with HV Pin Spacing

8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement Features: Sequence, Trim, Margin and Supervise Eight Power Supplies Manage Faults, Monitor Telemetry and Create Fault Logs PMBus™ Compliant Command Set Supported by LTpowerPlay® GUI Margin or Trim Supplies to Within 0.25% of Target Fast OV/UV Supervisors Per Channel Coordinate Sequencing and Fault Management Across Multiple LTC PSM Devices Automatic Fault Logging to Internal EEPROM Operate Autonomously without Additional Software Internal Temperature and Input Voltage Supervisors Accurate Monitoring of Eight Output Voltages, Input Voltage and Internal Die Temperature I2C/SMBus Serial Interface Can Be Powered from 3.3V, or 4.5V to 15V Programmable Watchdog Timer 100% Pin-Compatible Upgrade to the LTC2978/LTC2978A Available in 64-Pin 9mm × 9mm QFN PackageAEC-Q100 Qualified for Automotive Applications