60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller Features: Wide VIN Range: 4V to 60V (65V Abs Max) Low Operating IQ: 50μA (One Channel On) Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24V RSENSE or DCR Current Sensing Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise Phase-Lockable Frequency (75kHz to 850kHz) Programmable Fixed Frequency (50kHz to 900kHz) Selectable Continuous, Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Loads Very Low Dropout Operation: 99% Duty Cycle Adjustable Output Voltage Soft-Start or Tracking Power Good Output Voltage Monitor Output Overvoltage Protection Low Shutdown IQ: <14μA Internal LDO Powers Gate Drive from VIN or EXTVCC No Current Foldback During Start-Up Narrow SSOP Package

Active Clamp Synchronous Forward Controller Features: Input Voltage Range: 8.5V to 100V Programmable Volt-Second Clamp High Efficiency Control: Active Clamp, Synchronous Rectification, Programmable Delays Short-Circuit (Hiccup Mode) Overcurrent Protection Programmable Soft-Start/Stop Programmable OVLO and UVLO with Hysteresis Programmable Frequency (100kHz to 500kHz) Synchronizable to an External Clock

30A Power/Energy Monitor with Integrated Sense Resistor Features: Measures Current, Voltage, Power, Charge, Energy ±30A Current Range with Low 9mA Offset Integrated 300µΩ Sense Resistor 0V to 15V Input Range Independent of Supply Voltage Instantaneous Multiplication of Voltage and Current 0.5% Voltage Accuracy 1% Current and Charge Accuracy 1.2% Power and Energy Accuracy Alerts When Thresholds Exceeded Stores Maximum and Minimum Values Shutdown Mode with IQ < 10μA I2C/SPI Compatible Interface Available in 32-Lead 4mm × 6mm QFN Package

Dual Output PolyPhase Step-Down DC/DC Controller 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 and Frequency Synchronization (250kHz to 1MHz) ±0.5% Output Voltage Accuracy Over Temperature Integrated 16-Bit ADC Internal EEPROM with ECC and Fault Logging Integrated Powerful N-Channel MOSFET Gate Drivers Power Conversion Wide VIN Range: 4.5V to 24V VOUT Range: 0.5V to 5.4V (4V on VOUT0) Analog Current Mode Control Loop Accurate PolyPhase® Current Sharing for Up to 6 Phases Available in a 40-Pin (6mm × 6mm) QFN Package AEC-Q100 Qualified for Automotive Applications

LTPoE++/PoE+/PoE PD Controller Features: IEEE 802.3af/at and LTPoE++™ Powered Device (PD) Controller LTPoE++ Supports Power Levels Up to 90W LT4275A Supports All of the Following Standards: LTPoE++ 38.7W, 52.7W, 70W and 90W IEEE 802.3at 25.5W Compliant IEEE 802.3af Up to 13W Compliant LT4275B is IEEE 802.3at/af Compliant LT4275C is IEEE 802.3af Compliant 100V Absolute Maximum Input Voltage Wide Junction Temperature Range (–40°C to 125°C) Overtemperature Protection Integrated Signature Resistor External Hot Swap™ N-Channel MOSFET for Lowest Power Dissipation and Highest System Efficiency Programmable Aux Power Support as Low as 9V Optional Support of Non-Standard Low Voltage PoE Available in 10-Lead MSOP and 3mm × 3mm DFN Packages

Boost Controller with Power Factor Correction Features:PFC Boost with Minimum Number of External ComponentsVIN and VOUT Limited Only by External ComponentsActive Power Factor CorrectionLow Harmonic DistortionOvervoltage ProtectionEnergy Star Compliant (<0.5W No-Load Operation)16-Lead MSOP Package

60V Low IQ Synchronous Boost Controller with PassThru Features: Synchronous Operation for Highest Efficiency and Reduced Heat Dissipation Wide VIN Range: 4.5V to 60V (65V Abs Max); Operates Down to 2.3V After Start-Up Output Voltage Up to 60V ±1% 1.200V Reference Voltage RSENSE or Inductor DCR Current Sensing 100% Duty Cycle Capability for Synchronous MOSFET Low Quiescent Current: 28μA Phase-Lockable Frequency (75kHz to 850kHz) Programmable Fixed Frequency (50kHz to 900kHz) Power Good Output Voltage Monitor Low Shutdown Current: 4μA Internal LDO Powers Gate Drive from VBIAS or EXTVCC Thermally Enhanced Low Profile 24-Pin 4mm × 4mm QFN Package and 20-Lead TSSOP Package

Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management Features: PMBus/I2C Compliant Serial Interface Monitor Voltage, Current, Temperature and Faults Digitally Programmable Voltage, Current Limit, Soft-Start/Stop, Sequencing, Margining, AVP and UV/OV Thresholds 3V ≤ VINSNS ≤ 38V, 0.5V ≤ VOUT ≤ 5.25V ±0.5% Output Voltage Accuracy Programmable PWM Frequency or External Clock Synchronization from 250kHz to 1.25MHz Accurate PolyPhase® Current Sharing Internal EEPROM with Fault Logging and ECC IC Supply Range: 3V to 13.2V Resistor or Inductor DCR Current Sensing Optional Resistor Programming for Key Parameters 40-Pin (6mm × 6mm) QFN Package AEC-Q100 Qualified for Automotive Applications

Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization Features: 1A, 65V Power Switch Adjustable Switching Frequency Single Feedback Resistor Sets VOUT Synchronizable to External Clock High Gain SHDN Pin Accepts Slowly Varying Input Signals Wide Input Voltage Range: 2.55V to 40V Low VCESAT Switch: 400mV at 0.75A (Typical) Integrated Soft-Start Function Easily Configurable as a Boost, SEPIC, or Inverting Converter User Configurable Undervoltage Lockout (UVLO) Pin Compatible with LT3580 Tiny Thermally Enhanced 8-Lead 3mm × 3mm DFN and 8-Lead MSOP Packages AEC-Q100 Qualified for Automotive Applications

Dual 3 MHz, 1200mA Buck Regulator with Two 300 mA LDOs Features: Main input voltage range: 2.3 V to 5.5 V Two 1200 mA buck regulators and two 300 mA LDOs 24-lead, 4 mm × 4 mm LFCSP or 28-lead TSSOP package Regulator accuracy: ±1.8% Factory programmable or external adjustable VOUTx 3 MHz buck operation with forced PWM and auto PWM/PSM modes BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V LDO1/LDO2: output voltage range from 0.8 V to 5.2 V LDO1/LDO2: input supply voltage from 1.7 V to 5.5 V LDO1/LDO2: high PSRR and low output noise