High Efficiency, 2-Phase, Dual Synchronous Step-Down Switching Controller and Step-Up Regulator Features: Step-Down Controller Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise Power Good Output Voltage Indicator OPTI-LOOP™ Compensation Minimizes COUT DC Programmed Fixed Frequency 150kHz to 300kHz Wide VIN Range: 3.5V to 36V Operation Very Low Dropout Operation: 99% Duty Cycle Adjustable Soft-Start Current Ramping Latched Short-Circuit Shutdown with Defeat Option Remote Output Voltage Sense and OV Protection 5V and 3.3V Standby Regulators Selectable Const. Freq. or Burst Mode™ OperationStep-Up Regulator High Operating Switching Frequency of 1.2MHz Low Internal VCESAT Switch: 400mV @ 1A, VIN = 3V Wide VIN Range: 2.6V to 16V Operation High Output Voltage: Up to 34V

High Power CCFL Controller for Wide Dimming Range and Maximum Lamp Lifetime Features: Ultrawide Multimode Dimming™ Range Multiple Lamp Capability Programmable PWM Dimming Range and Frequency Precision Maximum and Minimum Lamp Currents Maximize Lamp Lifetime No Lamp Flicker Under All Supply and Load Conditions Open Lamp Detection and Protection 350kHz Switching Frequency 1.5A MOSFET Gate Driver 100mV Current Sense Threshold 5V Reference Voltage Output The 16-Lead SSOP Package

Lithium-Ion Linear Battery Charger in ThinSOT Features: Low Profile (1mm) ThinSOT™ No Blocking Diode Required No Sense Resistor Required 1% Accurate Preset Voltages: 4.1V or 4.2V Charge Current Monitor Output for Charge Termination Programmable Charge Current: 200mA to 700mA Automatic Sleep Mode with Input Supply Removal Manual Shutdown Negligible Battery Drain Current in Shutdown Undervoltage Lockout Self Protection for Overcurrent/Overtemperature

Wide Operating Range, No RSENSE Step-Down Controller Features: Wide VIN Range: 4V to 36V Sense Resistor Optional True Current Mode Control 2% to 90% Duty Cycle at 200kHz tON(MIN) ≤ 100ns Stable with Ceramic COUT Dual N-Channel MOSFET Synchronous Drive Power Good Output Voltage Monitor ±1% 0.6V Reference Adjustable Current Limit Adjustable Switching Frequency Programmable Soft-Start Output Overvoltage Protection Optional Short-Circuit Shutdown Timer Micropower Shutdown: IQ ≤ 30µA Available in a 1mm 20-Lead TSSOP Package

Wide Operating Range, No RSENSE Step-Down Controller Features: Wide VIN Range: 4V to 36V Sense Resistor Optional True Current Mode Control 2% to 90% Duty Cycle at 200kHz tON(MIN) ≤ 100ns Stable with Ceramic COUT Dual N-Channel MOSFET Synchronous Drive Power Good Output Voltage Monitor ±1% 0.6V Reference Adjustable Current Limit Adjustable Switching Frequency Programmable Soft-Start Output Overvoltage Protection Optional Short-Circuit Shutdown Timer Micropower Shutdown: IQ ≤ 30µA Available in a 1mm 20-Lead TSSOP Package

High Power Isolated Flyback Controller Features: Drives External Power MOSFET Supply Voltage Range: 4.5V to 20V Flyback Voltage Limited Only by External Components Senses Output Voltage Directly from Primary Side Winding—No Optoisolator Required Moderate Accuracy Regulation Without User Trims Regulation Maintained Well into Discontinuous Mode Switching Frequency from 50kHz to 250kHz with External Capacitor Available in 16-Pin GN and SO Packages Optional Load Compensation Optional Undervoltage Lockout External ISENSE Resistor Shutdown Feature Reduces IQ to 50µA Typ

Wide Input Range, No RSENSE Positive-to-Negative DC/DC Controller Features: High Efficiency Operation (No Sense Resistor Required) Wide Input Voltage Range: 2.5V to 36V Current Mode Control Provides Excellent Transient Response High Maximum Duty Cycle (Typ 92%) ±1% Internal Voltage Reference ±2% RUN Pin Threshold with 100mV Hysteresis Micropower Shutdown: IQ = 10µA Programmable Switching Frequency (50kHz to 1MHz) with One External Resistor Synchronizable to an External Clock Up to 1.3 × fOSC User-Controlled Pulse Skip or Burst Mode® Operation Internal 5.2V Low Dropout Voltage Regulator Capable of Operating with a Sense Resistor for High Output Voltage Applications (VDS >36V) Small 10-Lead MSOP Package

Hot Swap Controller with Multifunction Current Control Features: Allows Safe Board Insertion and Removal from a Live Backplane Controls Supply Voltages from 2.5V to 16.5V Programmable Soft-Start with Inrush Current Limiting, No External Gate Capacitor Required Faster Turn-Off Time Because No External Gate Capacitor is Required Dual Level Overcurrent Fault Protection Programmable Response Time for Overcurrent Protection (MS) Programmable Overvoltage Protection (MS) Automatic Retry or Latched Mode Operation (MS) High Side Drive for an External N-Channel FET User-Programmable Supply Voltage Power-Up Rate FB Pin Monitors VOUT and Signals RESET Glitch Filter Protects Against Spurious RESET Signal

Synchronous Push-Pull PWM Controllers Features: High Efficiency Synchronous Push-Pull PWM 1.5A Sink, 1A Source Output Drivers Adjustable Push-Pull Dead-Time and Synchronous Timing Adjustable System Undervoltage Lockout and Hysteresis Adjustable Leading Edge Blanking Low Start-Up and Quiescent Currents Current Mode (LTC3723-1) and Voltage Mode (LTC3723-2) Operation Single Resistor Slope Compensation VCC UVLO and 25mA Shunt Regulator Programmable Fixed Frequency Operation to 1MHz 50mA Synchronous Output Drivers Soft-Start, Cycle-by-Cycle Current Limiting and Hiccup Mode Short-Circuit Protection 5V, 15mA Low Dropout Regulator Available in 16-Pin SSOP Package

600mA, 500kHz Micropower Synchronous Boost Converter with Output Disconnect Features: Up to 96% Efficiency True Output Load Disconnect Inrush Current Limiting and Internal Soft-Start Low Voltage Start-Up: 0.85V Automatic Burst Mode® Operation with IQ ~ 20µA Continuous Switching at Light Loads (LTC3429B) Internal Synchronous Rectifier Current Mode Control with Internal Compensation Short-Circuit Protection 500kHz Fixed Frequency Switching Input Range: 0.5V to 4.4V Output Range: 2.5V to 4.3V (Up to 5V with Schottky) Shutdown Current: <1µA Antiringing Control Minimizes EMI Tiny External Components Low Profile (1mm) SOT-23 Package