18V, 5A Synchronous Buck-Boost DC/DC Converter Features:Input Voltage Range: 2.5V to 18VRuns Down to VIN = 250mV After Start-UpOutput Voltage Range: 0.8V to 18V5A Output Current in Buck Mode, VIN > 6V3A Output Current for VIN = 3.6V, VOUT = 5VProgrammable Switching Frequency: 400kHz to 2MHzSynchronizable with an External Clock Up to 2MHzAccurate Run Comparator ThresholdBurst Mode® Operation, No-Load IQ = 35μAUltralow Noise Buck-Boost PWMCurrent Mode ControlMaximum Power Point ControlPower Good IndicatorInternal Soft-Start28-Lead 4mm × 5mm QFN and TSSOP Packages

Dual 42V Synchronous Monolithic Step-Down Regulator with 6.5A Quiescent Current Features: Wide Input Voltage Range: 3.4V to 42V 2.5A and 1.5A Buck Regulators with Separate Inputs Fast Minimum Switch On-Time: 35ns Ultralow Quiescent Current Burst Mode® Operation: 6.5μA IQ Regulating 12VIN to 5VOUT and 3.3VOUT Output Ripple < 15mV 180° Out of Phase Switching Adjustable: 200kHz to 3MHz Synchronizable: 250kHz to 3MHz Accurate 1V Enable Pin Thresholds Internal Compensation Output Soft-Start and Tracking TSSOP Package: Output Stays at or Below Regulation Voltage During Adjacent Pin Short or When a Pin Is Left Floating Thermally Enhanced 28-Lead TSSOP and 3mm × 6mm QFN Packages

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

60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller Features: Wide VIN Range: 4.5V to 60V (65V Abs Max) Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 99% • VIN Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) No External Bootstrap Diodes Required Low Operating IQ: 29μA (One Channel On) Selectable Gate Drive UVLO Thresholds Out-of-Phase Operation Reduces Required Input Capacitance and Power Supply Induced Noise Phase-Lockable Frequency: 75kHz to 850kHz Selectable Continuous, Pulse Skipping or Low Ripple Burst Mode® Operation at Light Loads Selectable Current Limit (LTC3892/LTC3892-2) Very Low Dropout Operation: 99% Duty Cycle Power Good Output Voltage Monitors (LTC3892/LTC3892-2) Low Shutdown IQ: 3.6μA Small 32-Lead 5mm × 5mm QFN Package (LTC3892/LTC3892-2) or TSSOP Package (LTC3892-1)

High Efficiency, Synchronous, 4-Switch Buck-Boost Controller Features: Single Inductor Architecture Allows VIN Above, Below or Equal to the Regulated VOUT Programmable Input or Output Current Wide VIN Range: 4V to 38V 1% Output Voltage Accuracy: 0.8V < VOUT < 38V Synchronous Rectification: Up to 98% Efficiency Current Mode Control Phase-Lockable Fixed Frequency: 200kHz to 600kHz No Reverse Current During Start-Up Power Good Output Voltage Monitor Internal 5.5V LDO Quad N-Channel MOSFET Synchronous Drive VOUT Disconnected from VIN During Shutdown True Soft-Start and VOUT Short Protection, Even in Boost Mode Available in 28-Lead QFN (4mm × 5mm) and 28-Lead SSOP Packages

Programmable Hex Voltage Supervisor with EEPROM Features: Supervises 6 Power Supplies I2C Adjustable UV and OV Trip Points Guaranteed Threshold Accuracy: ±1% I2C/SMBus Interface Internal EEPROM 256 Programmable Thresholds per Channel Up to Three Range Settings per Channel Two General Purpose Inputs Three General Purpose Inputs/Outputs Programmable Output Delays Supply Voltage Range, 3.4V to 13.9V Supply Voltage Power Sharing from V1 to V4 16-Lead 5mm × 4mm DFN and SSOP Packages

Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT Features: Programmable Charge Current Up to 800mA No MOSFET, Sense Resistor or Blocking Diode Required Complete Linear Charger in ThinSOT™ Package for Single Cell Lithium-Ion Batteries Constant-Current/Constant-Voltage Operation with Thermal Regulation* to Maximize Charge Rate Without Risk of Overheating Charges Single Cell Li-Ion Batteries Directly from USB Port Preset 4.2V Charge Voltage with ±1% Accuracy Charge Current Monitor Output for Gas Gauging* Automatic Recharge Charge Status Output Pin C/10 Charge Termination 25µA Supply Current in Shutdown 2.9V Trickle Charge Threshold (LTC4054) Available Without Trickle Charge (LTC4054X) Soft-Start Limits Inrush Current Available in 5-Lead SOT-23 Package

High Voltage 3A, 500kHz Step-Down Switching Regulator with 100A Quiescent Current Features: Wide Input Range: 3.3V to 60V 3A Peak Switch Current Burst Mode® Operation: 100µA Quiescent Current Low Shutdown Current: IQ < 1µA Power Good Flag with Programmable Threshold Load Dump Protection to 60V 500kHz Switching Frequency Saturating Switch Design: 0.1Ω On-Resistance Peak Switch Current Maintained Over Full Duty Cycle Range 1.25V Feedback Reference Voltage Easily Synchronizable Soft-Start Capability Small 16-Pin Thermally Enhanced TSSOP Package

Dual 550kHz Synchronous 2-Phase DC/DC Controller with Programmable Up/Down Tracking Features: Wide VIN Range: 3V to 30V Operation with Line Feedforward Compensation Leading Edge Modulation Architecture for Extremely Low Duty Cycle Operation Phase-Lockable Fixed Frequency: 330kHz to 750kHz Two 180° Out-of-Phase Controllers Fast Programmable Power-Up/-Down Tracking Programmable Current Limit Without External Current Sense Resistor Optional Burst Mode® Operation at Light Load ±1% 0.6V Voltage Reference External N-Channel MOSFET Architecture Low Shutdown Current: <100µA Overvoltage Protection and PGOOD Flag Small 28-Lead SSOP and 32-Lead QFN Packages