Wide Input Range, No RSENSE Current Mode Boost, Flyback and SEPIC Controller Features: High Efficiency (No Sense Resistor Required) Wide Input Voltage Range: 2.5V to 36V Current Mode Control Provides Excellent Transient Response High Maximum Duty Cycle (92% Typ) ±2% RUN Pin Threshold with 100mV Hysteresis ±1% Internal Voltage Reference Micropower Shutdown: IQ = 10μA Programmable Operating 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 Output Overvoltage Protection Capable of Operating with a Sense Resistor for High Output Voltage Applications Small 10-Lead MSOP Package

2-Phase, Low Input Voltage, Dual Step-Down DC/DC Controller Features: Out-of-Phase Controllers Reduce Required Input Capacitance True PLL for Frequency Locking or Frequency Adjustment Operating Frequency Range: 300kHz to 750kHz Wide VIN Range: 2.5V to 10V Constant Frequency Current Mode Architecture Low Dropout: 100% Duty Cycle Power Good Output Voltage Monitor Internal Soft-Start Circuitry Selectable Burst Mode®/Pulse Skipping Operation at Light Loads Output Overvoltage Protection Low Quiescent Current: 460µA 0.8V ±2% Voltage Reference Small 16-Lead Narrow SSOP Package

Wide Operating Range, No RSENSE Step-Down Controller for DDR/QDR Memory Termination Features: VOUT = 1/2 VIN (Supply Splitter) Adjustable and Symmetrical Sink/Source Current Limit up to 20A ±0.65% Output Voltage Accuracy Up to 97% Efficiency No Sense Resistor Required Ultrafast Transient Response 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 Wide VCC Range: 4V to 36V Adjustable Switching Frequency up to 1.5MHz Output Overvoltage Protection Optional Short-Circuit Shutdown Timer Available in a 16-Pin Narrow SSOP Package

High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator Features: 180° Phased Dual Controllers Reduce Required Input Capacitance and Power Supply Induced Noise OPTI-LOOP® Compensation Minimizes COUT ±1.5% Output Voltage Accuracy over Temperature Dual N-Channel MOSFET Synchronous Drive Power Good Output Voltage Monitor DC Programmed Fixed Frequency 150kHz to 300kHz Wide VIN Range: 4.5V to 28V Operation Very Low Dropout Operation: 99% Duty Cycle Adjustable Soft-Start Current Ramping Foldback Output Current Limiting Latched Short-Circuit Shutdown with Defeat Option Output Overvoltage Protection Remote Output Voltage Sense Low Shutdown IQ : 20µA 5V and 3.3V Standby Regulators Selectable Constant Frequency, Burst Mode® Operation or PWM Operation Small 28-Lead Narrow SSOP Package

High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators Features: Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 14V Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise OPTI-LOOP® Compensation Minimizes COUT ±1% Output Voltage Accuracy Power Good Output Voltage Monitor Phase-Lockable Fixed Frequency 250kHz to 550kHz Dual N-Channel MOSFET Synchronous Drive Wide VIN Range: 4V to 36V Operation Very Low Dropout Operation: 99% Duty Cycle Adjustable Soft-Start Current Ramping Foldback Output Current Limiting Output Overvoltage Protection Low Shutdown IQ: 20µA Selectable Constant Frequency or Burst Mode® Operation Small 28-Lead SSOP Package

250kHz Low Supply Current High Efficiency 1.5A Switching Regulator Features: 1mA IQ at 250kHz Uses Small Inductors: 15µH All Surface Mount Components Only 0.6 Square Inch of Board Space Low Minimum Supply Voltage: 2.7V Constant Frequency Current Mode Current Limited Power Switch: 1.5A Regulates Positive or Negative Outputs Shutdown Supply Current: 12µA Typ Easy External Synchronization 8-Pin SO or PDIP Packages

Triple Output Power Supply for Small TFT-LCD Displays Features: Generates Three Voltages: 5.1V at 10mA 5V, -10V, or -15V at 500µA 10V or 15V at 500µA Better than 90% Efficiency Low Output Ripple: Less than 5mVP-P Complete 1mm Component Profile Solution Controlled Power-Up Sequence: AVDD/VGL/VGH All Outputs Disconnected and Actively Discharged in Shutdown Low Noise Fixed Frequency Operation Frequency Reduction Input for High Efficiency in Blank Mode Ultralow Quiescent Current: 75µA (Typ) in Scan Mode Available in a 3mm × 3mm 16-Pin QFN Package

3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller Features: 3-Phase Current Mode Controller with Onboard MOSFET Drivers ±5% Output Current Matching Optimizes Thermal Performance and Size of Inductors and MOSFETs Differential Amplifier Accurately Senses VOUT ±1% VREF Accuracy Over Temperature VOUT Range: 0.6V to 5.5V without Diffamp VOUT Range: 0.6V to (VCC – 1.2V) with Diffamp 250kHz to 600kHz Per Phase, PLL, Fixed Frequency PWM, Stage Shedding™ or Burst Mode® Operation OPTI-LOOP® Compensation Minimizes COUT Adjustable Soft-Start Current Ramping Short-Circuit Shutdown Timer with Defeat Option Overvoltage Soft Latch Adjustable Undervoltage Lockout Threshold Selectable Phase Output for Up to 12-Phase Operation Available in 5mm × 5mm QFN and 36-Pin Narrow (0.209') SSOP Packages

3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller Features: 3-Phase Current Mode Controller with Onboard MOSFET Drivers ±5% Output Current Matching Optimizes Thermal Performance and Size of Inductors and MOSFETs Differential Amplifier Accurately Senses VOUT ±1% VREF Accuracy Over Temperature VOUT Range: 0.6V to 5.5V without Diffamp VOUT Range: 0.6V to (VCC – 1.2V) with Diffamp 250kHz to 600kHz Per Phase, PLL, Fixed Frequency PWM, Stage Shedding™ or Burst Mode® Operation OPTI-LOOP® Compensation Minimizes COUT Adjustable Soft-Start Current Ramping Short-Circuit Shutdown Timer with Defeat Option Overvoltage Soft Latch Adjustable Undervoltage Lockout Threshold Selectable Phase Output for Up to 12-Phase Operation Available in 5mm × 5mm QFN and 36-Pin Narrow (0.209') 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