Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Life Extender Features: Dual Input, Single Output DC/DCs with Input Prioritizer Energy Harvesting Input: 3.0V to 19V Buck DC/DC Primary Cell Input: 1.8V to 5.5V Buck-Boost DC/DC Zero Battery IQ When Energy Harvesting Source is Available Ultralow Quiescent Current: 750nA at No-Load Low Noise LDO Post Regulator Integrated Supercapacitor Balancer Up to 50mA of Output Current Programmable DC/DC and LDO Output Voltages, Buck UVLO, and Buck-Boost Peak Input Current Integrated Low Loss Full-Wave Bridge Rectifier Input Protective Shunt: Up to 25mA at VIN ≥ 20V 5mm × 5mm QFN-32 Package

3A, 4MHz, Monolithic Synchronous Step-Down Regulator Features: High Efficiency: Up to 95% 3A Output Current Low Quiescent Current: 64μA Low RDS(ON) Internal Switch: 77mΩ 2.25V to 5.5V Input Voltage Range Programmable Frequency: 300kHz to 4MHz ±2% Output Voltage Accuracy 0.8V Reference Allows Low Output Voltage Selectable Forced Continuous/Burst Mode® Operation with Adjustable Burst Clamp Synchronizable Switching Frequency Low Dropout Operation: 100% Duty Cycle Power Good Output Voltage Monitor Overtemperature Protected Available in 16-Lead Exposed Pad TSSOP and QFN Packages

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

Fast 2-Phase, No RSENSE, Synchronous DC/DC Controller with Tracking/Sequencing Features: PolyPhase® Valley Current Mode Controller Synchronizable to an External Clock with PLL Coincident or Ratiometric Tracking Sense Resistor Optional 2% to 90% Duty Cycle at 200kHz tON(MIN) < 100ns True Remote Sensing Differential Amplifier High Efficiency at Both Light and Heavy Loads Power Good Output Voltage Monitor 0.6V ±1% Reference Adjustable Current Limit Programmable Soft-Start and Operating Frequency Output Overvoltage Protection Optional Short-Circuit Shutdown Timer 32-Lead (5mm × 5mm) QFN Package

Single Switch Synchronous Forward Controller Features: Synchronous Rectifier Control for High Efficiency Programmable Volt-Second Clamp Output Power Levels from 25W to 500W Low Current Start-Up (LT1952: 460µA; VIN On/Off = 14.25V/8.75V) (LT1952-1: 400µA; VIN On/Off = 7.75V/6.5V) True PWM Soft-Start Low Stress Short Circuit Protection Precision 107mV Current Limit Threshold Adjustable Delay for Synchronous Timing Accurate Shutdown Threshold with Programmable Hysteresis Programmable Slope Compensation Programmable Leading Edge Blanking Programmable Frequency (100kHz to 500kHz) Synchronizable to an External Clock up to 1.5 • fOSC Internal 1.23V Reference 2.5V External Reference Current Mode Control Small 16-Pin SSOP Package

Isolated No-Opto Synchronous Flyback Controller with Wide Input Supply Range Features: Senses Output Voltage Directly from Primary Side Winding—No Opto-Isolator Required Synchronous Driver for High Efficiency Input Voltage Limited Only by External Power Components Accurate Output Regulation without User Trims Switching Frequency from 50kHz to 250kHz Synchronizable Load Compensation Programmable Undervoltage Lockout Available in a Thermally Enhanced 16-Lead TSSOP Package

Ultralow Power Boost Converter with Output Disconnect Features: Ultralow Quiescent Current 8.5μA in Active Mode 0μA in Shutdown Mode Comparator Built into SHDN pin Low Noise Control Scheme Adjustable FB reference voltage Wide Input Range: 2.5V to 16V Wide Output Range: Up to 40V Integrated Power NPN Switch 25mA Current Limit (LT8410) 8mA Current Limit (LT8410-1) Integrated Schottky Diode Integrated Output Disconnect High Value (12.4M/0.4M) Feedback Resistors Integrated Built in Soft-Start (Optional Capacitor from VREF to GND) Overvoltage Protection for CAP and VOUT pins Tiny 8-Pin 2mm × 2mm DFN package

1.2A, Step-Down Switching Regulator in 3mm 3mm DFN Features: Wide Input Range: 3.6V to 36V Operating, 40V Maximum Up to 1.2A Output Current Resistor-Programmable Fixed-Frequency Operation from 200kHz to 3MHz Output Adjustable Down to 780mV Short-Circuit Robust Uses Tiny Capacitors and Inductors Soft-Start Low Shutdown Current: <2µA Low VCESAT Switch: 350mV at 1A Thermally Enhanced, Low Profile 3mm x 3mm DFN-8 and MSOP-8 Packages

100kHz, 5A, 2.5A and 1.25A High Efficiency Switching Regulators Features: Wide Input Voltage Range: 3V to 60V Low Quiescent Current: 6mA Internal 5A Switch (2.5A for LT1171, 1.25A for LT1172) Shutdown Mode Draws Only 50μA Supply Current Very Few External Parts Required Self-Protected Against Overloads Operates in Nearly All Switching Topologies Flyback-Regulated Mode Has Fully Floating Outputs Comes in Standard 5-Pin Packages LT1172 Available in 8-Pin MiniDIP and Surface Mount Packages Can Be Externally Synchronized

Monolithic Dual Tracking 3.5A Step-Down Switching Regulator Features: Wide Input Range: Operation from 3V to 36V OVLO Protects Circuit Through 60V Transients Independent Supply, Shutdown, Soft-Start, UVLO, Programmable Current Limit and Programmable Power Good for Each 3.5A Regulator Die Temperature Monitor Adjustable/Synchronizable Fixed Frequency Operation from 250kHz to 2.25MHz with Synchronized Clock Output Independent Synchronized Switching Frequencies Optimize Component Size Antiphase Switching Outputs Can Be Paralleled Flexible Output Voltage Tracking Low Dropout: 95% Maximum Duty Cycle 5mm × 5mm QFN Package FMEA Compliant 38-Pin Exposed Pad TSSOP Package