Dual Monolithic 1.6A Step-Down Switching Regulator Features: Wide Input Voltage Range, 3.6V to 25V Two 1.6A Output Switching Regulators with Internal Power Switches Constant Switching Frequency LT3506: 575kHz LT3506A: 1.1MHz Anti-Phase Switching Reduces Ripple Accurate 0.8V Reference, ±1% Independent Shutdown/Soft-Start Pins Independent Power Good Indicators Ease Supply Sequencing Uses Small Inductors and Ceramic Capacitors Small 16-Lead Thermally Enhanced 5mm × 4mm DFN and TSSOP Surface Mount Packages

Dual Monolithic 1.4A Step-Down Switching Regulator Features: Wide Input Voltage Range: 3.7V to 36V Two 1.4A Output Switching Regulators with Internal Power Switches Adjustable 250kHz to 2.5MHz Switching Frequency Synchronizable over the Full Frequency Range Anti-Phase Switching Reduces Ripple Uses Small Inductors and Ceramic Capacitors Accurate Programmable Undervoltage Lockout Independent Tracking, Soft-Start and Power Good Circuits Ease Supply Sequencing Output Adjustable Down to 800mV Small 4mm × 4mm 24-Pin QFN or 16-Pin Thermally Enhanced TSSOP Surface Mount Packages AEC-Q100 Qualified for Automotive Applications

Monolithic Dual Tracking 2A Step-Down Switching Regulator Features: Wide Input Range: 3.1V to 25V Two Switching Regulators with 2A Output Capability Independent Supply to Each Regulator Adjustable/Synchronizable Fixed Frequency Operation from 250kHz to 1.5MHz Antiphase Switching Outputs Can be Paralleled Independent, Sequential, Ratiometric or Absolute Tracking Between Outputs Independent Soft-Start and Power Good Pins Enhanced Short-Circuit Protection Low Dropout: 95% Maximum Duty Cycle Low Shutdown Current: <10µA 20-Lead TSSOP Package with Exposed Leadframe

60V Synchronous Boost LED Controller Features: 3000:1 External PWM Dimming 250:1 Internal PWM Dimming Wide VIN Operating Range: 2.5V to 38.5V Synchronous Boost Output Voltage up to 60V Spread-Spectrum Frequency Modulation for Lower EMI PMOS Switch Driver for PWM and Output Disconnect Constant Current (±3.5%) Regulation Constant Voltage (±2%) Regulation Rail-to-Rail LED Current Sense: 0V to 60V Programmable VIN Undervoltage Lockout Analog Dimming via Two Control Pins 100kHz to 1MHz Operation Programmable Open LED Protection with OPENLED Flag Short-Circuit Protection and SHORTLED Flag Drives LEDs in Boost, SEPIC, Buck Mode, or BuckBoost Mode Configurations 28 Lead TSSOP and QFN (4mm × 5mm) Exposed Pad Packages

2-Phase Step-Up DC/DC Controller Features:2-Phase Operation Reduces Required Input and Output CapacitanceProgrammable Switching Frequency: 150kHz to 500kHz6V to 40V Input Range10V Gate Drive with VCC ≥13VHigh Current Gate Drive (4A)Programmable Soft-Start and Current LimitProgrammable Slope Compensation for High Noise ImmunityMOSFET Gate Signals with Programmable Falling Edge Delay for External Synchronous DriversProgrammable Undervoltage LockoutProgrammable Duty Cycle Clamp (50% or Higher)Thermally Enhanced 28-Lead TSSOP and 4mm × 5mm QFN Packages

2-Phase Step-Up DC/DC Controller Features: 2-Phase Operation Reduces Required Input and Output Capacitance Programmable Switching Frequency: 150kHz to 500kHz 6V to 40V Input Range 10V Gate Drive with VCC ≥13V High Current Gate Drive (4A) Programmable Soft-Start and Current Limit Programmable Slope Compensation for High Noise Immunity MOSFET Gate Signals with Programmable Falling Edge Delay for External Synchronous Drivers Programmable Undervoltage Lockout Programmable Duty Cycle Clamp (50% or Higher) Thermally Enhanced 28-Lead TSSOP and 4mm x 5mm QFN Packages

60V Synchronous 4-Switch Buck-Boost Controller Features: 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Synchronous Switching: Up to 98.5% Efficiency Wide VIN Range: 4.7V to 60V 2% Output Voltage Accuracy: 1.2V ≤ VOUT < 60V 6% Output Current Accuracy: 0V ≤ VOUT < 60V Input and Output Current Regulation with Current Monitor Outputs No Top FET Refresh in Buck or Boost VOUT Disconnected from VIN During Shutdown C/10 Charge Termination and Output Shorted Flags Capable of 100W or Greater per IC Easy Parallel Capability to Extend Output Power 38-Lead TSSOP with Exposed Pad

60V 4-Switch Synchronous Buck-Boost LED Driver Controller Features: 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Synchronous Switching: Up to 98.5% Efficiency Wide VIN Range: 4.7V to 60V Wide VOUT Range: 0V to 60V (52V LED) ±6% LED Current Accuracy: 0V ≤ VLED < 52V True Color PWM™ and Analog Dimming LED and Input Current Regulation with Current Monitor Outputs No Top MOSFET Refresh in Buck or Boost VOUT Disconnected From VIN During Shutdown Open or Shorted LED Fault Protection Capable of 100W or Greater per IC 38-Lead TSSOP with Exposed Pad

Offline Isolated Flyback LED Controller with Active PFC Features: Isolated PFC LED Driver with Minimum Number of External Components TRIAC Dimmable VIN and VOUT Limited Only by External Components Active Power Factor Correction (Typical PFC > 0.97) Low Harmonic Content No Opto-Coupler Required Accurate Regulated LED Current (±5% Typical) Open LED and Shorted LED Protection Thermally Enhanced 16-lead MSOP Package

Secondary Side Dual Output Controller with Opto Driver Features: Regulates Two Secondary Outputs Optocoupler Feedback Driver and Second Output Synchronous Driver Controller True Differential Remote Sensing Regulation High Switching Frequency: up to 800kHz Programmable Current Limit Programmable Soft-Start and Power Good Automatic Frequency Synchronization Available in Thermally Enhanced 28-Lead TSSOP

Wide Input Range Synchronous Regulator Controller with Accurate Current Limit Features:Wide Input Range: 2.5V to 60VIntegrated Buck-Boost Supply for 7.5V MOSFET Gate DriveProgrammable Constant-Current Operation with Current Monitor OutputLow IQ: 75μA, 12VIN to 3.3VOUTSelectable Low Output Ripple Burst Mode® OperationVOUT Up to 60VAdjustable and Synchronizable: 50kHz to 1MHzInternal OVLO Protects for Input Transients Up to 80VAccurate Input Overvoltage and Undervoltage ThresholdProgrammable Soft-Start with Voltage TrackingPower Good and Output OVP28-Lead TSSOP and 38-Lead 4mm × 6mm QFN Packages

Wide Input Range Synchronous Regulator Controller with Accurate Current Limit Features:Wide Input Range: 2.5V to 60VIntegrated Buck-Boost Supply for 7.5V MOSFET Gate DriveProgrammable Constant-Current Operation with Current Monitor OutputLow IQ: 75μA, 12VIN to 3.3VOUTSelectable Low Output Ripple Burst Mode® OperationVOUT Up to 60VAdjustable and Synchronizable: 50kHz to 1MHzInternal OVLO Protects for Input Transients Up to 80VAccurate Input Overvoltage and Undervoltage ThresholdProgrammable Soft-Start with Voltage TrackingPower Good and Output OVP28-Lead TSSOP and 38-Lead 4mm × 6mm QFN Packages

Wide Input Range Synchronous Regulator Controller with Accurate Current Limit Features:Wide Input Range: 2.5V to 60VIntegrated Buck-Boost Supply for 7.5V MOSFET Gate DriveProgrammable Constant-Current Operation with Current Monitor OutputLow IQ: 75μA, 12VIN to 3.3VOUTSelectable Low Output Ripple Burst Mode® OperationVOUT Up to 60VAdjustable and Synchronizable: 50kHz to 1MHzInternal OVLO Protects for Input Transients Up to 80VAccurate Input Overvoltage and Undervoltage ThresholdProgrammable Soft-Start with Voltage TrackingPower Good and Output OVP28-Lead TSSOP and 38-Lead 4mm × 6mm QFN Packages

Wide Input Range Synchronous Regulator Controller with Accurate Current Limit Features:Wide Input Range: 2.5V to 60VIntegrated Buck-Boost Supply for 7.5V MOSFET Gate DriveProgrammable Constant-Current Operation with Current Monitor OutputLow IQ: 75μA, 12VIN to 3.3VOUTSelectable Low Output Ripple Burst Mode® OperationVOUT Up to 60VAdjustable and Synchronizable: 50kHz to 1MHzInternal OVLO Protects for Input Transients Up to 80VAccurate Input Overvoltage and Undervoltage ThresholdProgrammable Soft-Start with Voltage TrackingPower Good and Output OVP28-Lead TSSOP and 38-Lead 4mm × 6mm QFN Packages

2-String 60mA, 2MHz Step-Up LED Driver with 2% Current Matching Features: Up to 36V of LEDs, 2-String × 60mA LED Driver Wide Input Range: 2.9V to 40V Up to 40,000:1 PWM Dimming (250ns LED On-Time) (Independent of Leakage at VOUT) ±2% LED Current Matching (Typ ±0.3%) Integrated Schottky Diode Internal 400mΩ, 40V, 1A Switch Single Resistor Sets LED Current (10mA to 60mA) for Both High-Side Current Sources Output Adapts to LED VF for Optimum Efficiency LED Current Regulated Even for VIN > VOUT Fault Flag + Protection for Open-LED and LED-Short-to- GND (Other String Remains in Regulation) Programmable Maximum VOUT (Regulated) Internal Compensation, Soft-Start and Thermal Regulation Accurate EN/UVLO Threshold Fixed 2MHz Switching Frequency

36V, 2A Synchronous Step-Up LED Driver Features:±2.5% LED Current Regulation±2% Output Voltage Regulation5000:1 PWM Dimming at 100Hz128:1 Internal PWM DimmingSpread-Spectrum Frequency ModulationSilent Switcher® Architecture for Low EMIOperates in Boost, Buck Mode and Buck-Boost Mode2.8V to 36V Input Voltage RangeUp to 34V LED String Voltage2A, 40V Internal Switches200kHz to 2MHz with SYNC FunctionAnalog or Duty Cycle LED Current ControlOpen/Short LED Protection and Fault IndicationThermally Enhanced 28-Pin (4mm × 5mm) QFN

36V, 2A SynchronousBuck-Boost Converter andLED Driver Features: 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Constant Voltage and Constant Current Regulation Proprietary Peak-Buck Peak-Boost Current Mode 3V to 36V Input Voltage Range 0V to 36V Output Voltage Range ±1.5% Output Voltage Regulation ±3% Output Current Regulation 5000:1 External and 128:1 Internal PWM Dimming Open and Short LED Protection with Fault Reporting 300kHz to 2MHz Fixed Switching Frequency with External Frequency Synchronization Flicker-Free Spread Spectrum for Low EMI Available in 28-Lead QFN (4mm × 5mm) AEC-Q100 Qualified for Automotive Applications

60V LED Driver with 4A Switch Current Features: 4000:1 True Color PWM™ Dimming 4A, 60V Internal DMOS Switch Wide Input Voltage Range: 3V to 42V 0V to 60V Output Current Regulation with Monitor PMOS Switch Driver for PWM and Output Disconnect LED Short-Circuit Protection and SHORTLED Flag Internal Spread Spectrum Frequency Modulation Constant-Current and Constant-Voltage Regulation  Input Current Limit and Monitor Adjustable Frequency: 200kHz to 3MHz, Synchronizable to an External Clock 10:1 Analog Dimming Programmable Open-LED Protection with OPENLED Flag Programmable VIN Undervoltage and Overvoltage Lockout Available in a 28-Lead TSSOP PackageAEC-Q100 Qualified for Automotive Applications

I2C Programmable Quad Monolithic Boost LED Driver Features: Four Independent DC/DC Channels I2C Programmable 8192:1 True Color PWM™ Dimming 8-Bit Analog Dimming Pin Scaled by DAC 11-Channel, 8-Bit ADC with 2 External Inputs 1.6A, 60V Internal DMOS Switches Input Voltage: 3V to 60V Output Voltage and Current Monitoring to 60V High Side PMOS Disconnect and PWM Switch Driver Adjustable Frequency: 300kHz to 4MHz with Optional Frequency Synchronization Thermally Enhanced 6mm × 6mm 40-Lead QFN Package n AEC-Q100 Qualification in Progress

I2C Programmable Quad Monolithic Boost LED Driver Features: Four Independent DC/DC Channels I2C Programmable 8192:1 True Color PWM™ Dimming 8-Bit Analog Dimming Pin Scaled by DAC 11-Channel, 8-Bit ADC with 2 External Inputs 1.6A, 60V Internal DMOS Switches Input Voltage: 3V to 60V Output Voltage and Current Monitoring to 60V High Side PMOS Disconnect and PWM Switch Driver Adjustable Frequency: 300kHz to 4MHz with Optional Frequency Synchronization Thermally Enhanced 6mm × 6mm 40-Lead QFN Package n AEC-Q100 Qualification in Progress