Low Noise, Switched Capacitor-Regulated Voltage Inverters Features: Regulated Negative Voltage from a Single Positive Supply Low Output Ripple: Less Than 1mVP-P Typ High Charge Pump Frequency: 900kHz Typ Small Charge Pump Capacitors: 0.1µF Requires Only Four External Capacitors Fixed −4.1V or Adjustable Output Shutdown Mode Drops Supply Current to < 1µA High Output Current: Up to 10mA, VCC = 5V Output Regulation: 5% Available in SO-8 and 16-Lead SSOP

Micropower Low Noise Boost Converters with Output Disconnect Features: Low Quiescent Current 65µA in Active Mode 1µA in Shutdown Mode Switching Frequency is Non-Audible Over Entire Load Range Integrated Power NPN: 350mA Current Limit (LT3494A) 180mA Current Limit (LT3494) Integrated Schottky Diode Integrated Output Disconnect Integrated Output Dimming Wide Input Range: 2.3V to 16V Wide Output Range: Up to 40V Tiny 8-Lead 3mm × 2mm DFN Package

Synchronous 1A Buck-Boost and 600mA Buck Converters Features: Dual High Efficiency DC/DC Converters: Buck-Boost (VOUT: 2.2V to 5.25V, IOUT = 1A at VOUT = 3.3V, VIN ≥ 3V) Buck (VOUT: 0.8V to VIN, IOUT = 600mA) 2.2V to 5.5V Input Voltage Range Pin-Selectable Burst Mode® Operation Uncommitted Gain Block for LDO Controller, Battery Good Indication or Sequencing Programmable 100kHz to 2MHz Switching Frequency 55μA Total Quiescent Current for Both Converters in Burst Mode Operation Thermal and Overcurrent Protection <1μA Quiescent Current in Shutdown 24-Lead 4mm × 4mm QFN Package

Adjustable TFT Bias Supply with WLED Driver Features: Generates Three Adjustable, Low Noise Rails for Small/Medium TFT Displays Drives Up to Ten White LEDs LED Dimming and Open-Circuit Protection Controlled Power-Up/Power-Down Sequencing 1.5MHz Fixed Frequency, Low Noise Operation VIN Range 2.5V to 6V, VOUT Range 3V to 6V TFT Supply Efficiency Up to 90% LED Supply Efficiency Up to 78% Two independently Enabled LED Strings 200 to 1 True Color PWM™ Dimming Tiny External Solution 24-Lead QFN Package (4mm × 4mm × 0.75mm)

24V, 12A Monolithic Synchronous Step-Down DC/DC Converter Features: 12A Output Current Wide VIN Range = 4V to 24V Internal N-Channel MOSFETs True Current Mode Control Optimized for High Step-Down Ratios tON(MIN) ≤100ns Extremely Fast Transient Response Stable with Ceramic COUT ±1% 0.6V Voltage Reference Power Good Output Voltage Monitor Adjustable On-Time/Switching Frequency Adjustable Current Limit Programmable Soft-Start Output Overvoltage Protection Optional Short-Circuit Shutdown Timer Low Shutdown IQ: 15μA Available in a 9mm × 9mm 64-Pin QFN Package

High Efficiency, Synchronous, 4-Switch Buck-Boost Controller Features: Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Wide VIN Range: 4V to 36V Operation Synchronous Rectification: Up to 98% Efficiency Current Mode Control ±1% Output Voltage Accuracy: 0.8V < VOUT < 30V Phase-Lockable Fixed Frequency: 200kHz to 400kHz Power Good Output Voltage Monitor Internal LDO for MOSFET Supply Quad N-Channel MOSFET Synchronous Drive VOUT Disconnected from VIN During Shutdown Adjustable Soft-Start Current Ramping Foldback Output Current Limiting Selectable Low Current Modes Output Overvoltage Protection Available in 24-Lead SSOP and Exposed Pad (5mm × 5mm) 32-Lead QFN Packages

1A Micropower Step-Down Switching Regulator Features: Wide Input Range: Operation from 3.6V to 36V Overvoltage Lockout Protects Circuits through 60V Transients 1A Output Current Low Ripple Burst Mode® Operation IQ = 75μA at 12VIN to 3.3VOUT Output Ripple < 15mVP-P Adjustable Switching Frequency: 250kHz to 2.2MHz Short-Circuit Protected Synchronizable Between 300kHz and 2.2MHz 0.8V Feedback Reference Voltage Output Voltage 0.8V to 20V Soft-Start Capability Power Good Flag Small 12-Pin Thermally Enhanced 3mm × 3mm DFN Package

Fast, Wide Operating Range No RSENSE Step-Down Controller Features: Wide VIN Range: 4V to 38V ±1% 0.6V Voltage Reference Extremely Fast Transient Response tON(MIN): 43ns No RSENSE™ Valley Current Mode Control Stable with Low ESR Ceramic COUT Supports Smooth Start-Up in Pre-Biased Output Optimized for High Step-Down Ratios Adjustable Output Voltage Soft-Start or Tracking Power Good Output Voltage Monitor Dual N-Channel MOSFET Synchronous Drive Adjustable Switching Frequency Programmable Current Limit with Foldback Output Overvoltage Protection 16-Pin MSOP and 3mm × 3mm QFN Packages

High Frequency Synchronous Step-Down Voltage Mode DC/DC Controller Features: Wide VIN Range: 4.5V to 38V Line Feedforward Compensation Low Minimum On-Time: tON(MIN) < 30ns Powerful On-board MOSFET Drivers Leading Edge Modulation Voltage Mode Control ±0.75%, 0.6V Reference Voltage Accuracy Over Temperature VOUT Range: 0.6V to 0.8VIN Programmable, Cycle-by-Cycle Peak Current Limit Sense Resistor or RDS(ON) Current Sensing Programmable Soft-Start Synchronizable Fixed Frequency from 250kHz to 1MHz Selectable Pulse-Skipping or Forced Continuous Modes of Operation Low Shutdown Current: 14μA Typical Thermally Enhanced 16-Lead MSOP and 3mm × 3mm QFN Packages

Secondary-Side Synchronous Forward Controller Features: Secondary-Side Control for Fast Transient Response Self-Starting Architecture Eliminates Need for Separate Bias Regulator Proprietary Gate Drive Encoding Scheme Reduces System Complexity Current Mode Control Ensures Current Sharing PLL Fixed Frequency: 100kHz to 500kHz ±1% Output Voltage Accuracy OPTI-LOOP Compensation Available in a Narrow 16-Lead SSOP Package