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

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

Boost DC/DC Converter with APD Current Monitor Features:65V, 350mA Internal DMOS SwitchIntegrated Schottky Diode2% Accurate APD Current Monitoring Over the 3μA to 3mA RangeSingle Resistor Programs Maximum APD CurrentFast APD Current Limiter with IndicatorProgrammable Loss-of-Signal IndicatorCTRL Pin Adjusts Output VoltageProgrammable VIN Undervoltage LockoutHigh Efficiency Step-Up ConverterSelectable 1MHz/2MHz Switching FrequencyInternally CompensatedInternal Soft-Start2.7V to 12V VIN RangeLow Shutdown Current: <1μA

Dual High Efficiency SO-16 Step-Down Switching Regulator Controllers Features: Dual Outputs LTC1143, LTC1143L: 3.3V, 5V LTC1143L-ADJ: Dual Adjustable Very High Efficiency: Over 95% Possible Current Mode Operation for Excellent Line and Load Transient Response High Efficiency Maintained over Three Decades of Output Current Low Standby Current at Light Loads: 160µA/Output Logic-Controlled Shutdown (LTC1143, LTC1143L) Wide VIN Range: 3.5V to 16V (LTC1143L, LTC1143L-ADJ) Very Low Dropout Operation: 100% Duty Cycle Available in Narrow 16-Pin SO Package