Adjustable Frequency Current Mode Flyback/Boost/SEPIC DC/DC Controller Features: VIN and VOUT Limited Only by External Components 4.5V Undervoltage Lockout Threshold Adjustable Slope Compensation Adjustable Overcurrent Protection with Automatic Restart Adjustable Operating Frequency (70kHz to 700kHz) With One External Resistor Synchronizable to an External Clock ±1.5% Reference Accuracy Only 100mV Current Sense Voltage Drop RUN Pin with Precision Threshold and Adjustable Hysteresis Programmable Soft-Start with One External Capacitor Low Quiescent Current: 360μA Small 10-Lead MSOP and 3mm × 3mm DFN

Li-Ion/Polymer Shunt Battery Charger System Features: Low Operating Current (450nA) 1% Float Voltage Accuracy Over Full Temperature and Shunt Current Range 50mA Maximum Internal Shunt Current (500mA with External PFET) Pin Selectable Float Voltage Options: 4.0V, 4.1V, 4.2V Ultralow Power Pulsed NTC Float Conditioning for Li-Ion/Polymer Protection Suitable for Intermittent, Continuous and Very Low Power Charging Sources Low and High Battery Status Outputs Simple Low Voltage Load Disconnect Application Thermally Enhanced, Low Profile (0.75mm) 8-Lead (2mm × 3mm) DFN and MSOP Packages

Isolated Flyback Switching Regulators Features: No Transformer "Third Winding" or Optoisolator Required ±5% Accurate Output Voltage Without User Trims Resistor Programmable Output Voltage Regulation Maintained Well Into Discontinuous Mode (Light Load) Optional Load Compensation Operating Frequency: 285kHz Easily Synchronized to External Clock Available in 16-Pin Narrow SO Package

Low IQ Synchronous Boost Controller Features: Synchronous Operation For Highest Efficiency and Reduced Heat Dissipation Wide VIN Range: 4.5V to 38V (40V Abs Max) and Operates Down to 2.5V After Start-Up Output Voltages Up to 60V ±1% 1.2V Reference Voltage RSENSE or Inductor DCR Current Sensing 100% Duty Cycle Capability for Synchronous MOSFET Low Quiescent Current: 55μA Phase-Lockable Frequency (75kHz to 850kHz) Programmable Fixed Frequency (50kHz to 900kHz) Adjustable Output Voltage Soft-Start Power Good Output Voltage Monitor Low Shutdown Current IQ: <8μA Internal 5.4V LDO for Gate Drive Supply Thermally Enhanced 16-Pin 3mm × 3mm QFN and MSOP Packages AEC-Q100 Qualified for Automotive Applications

Isolated Flyback Converter without an Opto-Coupler Features: 3V to 40V Input Voltage Range 2.5A, 60V Integrated NPN Power Switch Boundary Mode Operation No Transformer Third Winding or Optoisolator Required for Regulation Improved Primary-Side Winding Feedback Load Regulation VOUT Set with Two External Resistors BIAS Pin for Internal Bias Supply and Power NPN Driver Programmable Soft-Start Programmable Power Switch Current Limit Thermally Enhanced 16-Lead TSSOP

32V, 2A Module (Power Module) Li-Ion/Polymer Battery Charger Features: Wide Input Voltage Range: 4.95V to 32V (40V Absolute Maximum) Float Voltage Options: 1-Cell: 4.1V, 4.2V 2-Cell: 8.2V, 8.4V Programmable Charge Current: Up to 2A User-Selectable Charge Termination: C/10 or Onboard Termination Timer Dynamic Charge Rate Programming/Soft-Start Pin Programmable Input Current Limit Optional Reverse Input Protection NTC Resistor Temperature Monitor 0.5% Float Voltage Accuracy Bad-Battery Detection with Auto-Reset Tiny, Low Profile (9mm × 15mm × 4.32mm) Surface Mount LGA Package

32V, 2A Module (Power Module) Li-Ion/Polymer Battery Charger Features: Wide Input Voltage Range: 4.95V to 32V (40V Absolute Maximum) Float Voltage Options: 1-Cell: 4.1V, 4.2V 2-Cell: 8.2V, 8.4V Programmable Charge Current: Up to 2A User-Selectable Charge Termination: C/10 or Onboard Termination Timer Dynamic Charge Rate Programming/Soft-Start Pin Programmable Input Current Limit Optional Reverse Input Protection NTC Resistor Temperature Monitor 0.5% Float Voltage Accuracy Bad-Battery Detection with Auto-Reset Tiny, Low Profile (9mm × 15mm × 4.32mm) Surface Mount LGA Package

32V, 2A Module (Power Module) Li-Ion/Polymer Battery Charger Features: Wide Input Voltage Range: 4.95V to 32V (40V Absolute Maximum) Float Voltage Options: 1-Cell: 4.1V, 4.2V 2-Cell: 8.2V, 8.4V Programmable Charge Current: Up to 2A User-Selectable Charge Termination: C/10 or Onboard Termination Timer Dynamic Charge Rate Programming/Soft-Start Pin Programmable Input Current Limit Optional Reverse Input Protection NTC Resistor Temperature Monitor 0.5% Float Voltage Accuracy Bad-Battery Detection with Auto-Reset Tiny, Low Profile (9mm × 15mm × 4.32mm) Surface Mount LGA Package

20V High Efficiency Nanopower Step-Down Regulator Features: 720nA Input IQ in Regulation (No Load), VIN = 4V 820nA Input IQ in Regulation (No Load), VIN = 20V 400nA Input IQ in UVLO 2.7V to 20V Input Operating Range Up to 50mA of Output Current Pin Selectable Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V (LTC3388-1) 2.8V, 3.0V, 3.3V, 5.0V (LTC3388-3) High Efficiency Hysteretic Synchronous DC/DC Conversion Standby Mode Disables Buck Switching Available in 10-Lead MSE and 3mm × 3mm DFN Packages

Dual Monolithic Buck Regulator with Power-On Reset and Watchdog Timer Features: High Voltage Buck Regulator: 4V to 42V Operating Range 1.3A Output Current Input Transient Protection to 55V Low Voltage Synchronous Buck Regulator: 2.5V to 5.5V Input Voltage Range 1.1A Output Current Synchronizable, Adjustable 350kHz to 2.5MHz Switching Frequency Programmable Power-On Reset Timer Programmable Window Mode Watchdog Timer Typical Quiescent Current: 290μA Short-Circuit Robust Programmable Soft-Start Low Shutdown Current: IQ < 1μA Thermal Shutdown Available in Thermally Enhanced 28-Lead (4mm × 5mm) QFN and 28-Lead TSSOP Packages