Clock-Tunable, Quad Second Order, Filter Building Blocks Features: Four Identical 2nd Order Filter Sections in an SSOP Package 2nd Order Section Center Frequency Error: ±0.3% Typical and ±0.8% Maximum Low Noise per 2nd Order Section, Q ≤ 5: LTC1068-200 50µVRMS, LTC1068 50µVRMS  LTC1068-50 70µVRMS, LTC1068-25 90µVRMS Low Power Supply Current: 4.5mA, Single 5V, LTC1068-50 Operation with ±5V Power Supply, Single 5V Supply or Single 3.3V Supply

Standalone USB Li-Ion/Polymer Battery Charger in 2mm x 2mm DFN Features: Full-Featured Standalone USB Li-Ion/Polymer Battery Charger 100mA to 950mA Programmable Charge Current C/10 Charge Current Detection Output Internal Safety Timer Termination NTC Thermistor Input for Temperature Qualified Charging Preset 4.2V Float Voltage with 0.5% Accuracy Constant-Current/Constant-Voltage Operation with Thermal Feedback Charge Current Monitor Output for Gas Gauging Automatic Recharge Bad-Battery Detection 8.5µA Input Supply Current in Suspend Mode Tiny 8-Lead (2mm × 2mm) DFN Package

3A, DC/DC Converter with Dual Rail-to-Rail Current Sense Features: Dual 100mV Rail-to-Rail Current Sense Amplifiers Wide Input Voltage Range: 2.5V to 25V 3A, 42V Internal Switch High Efficiency Power Conversion: Up to 93% Drives LEDs in Boost, Buck-Boost or Buck Mode Frequency Set by External Resistor: 200kHz to 3.5MHz Programmable Soft-Start Low VCESAT Switch: 0.3V at 2.5A Capable of Positive and Negative Output Voltages (Boost, Inverting, SEPIC, Flyback) Available in Thermally Enhanced 20-Lead (4mm × 4mm) QFN and 20-Lead TSSOP Packages

Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization Features: 2A Internal Power Switch Adjustable Switching Frequency Single Feedback Resistor Sets VOUT Synchronizable to External Clock High Gain SHDN Pin Accepts Slowly Varying Input Signals Wide Input Voltage Range: 2.5V to 32V Low VCESAT Switch: 300mV at 1.5A (Typical) Integrated Soft-Start Function Easily Configurable as a Boost or Inverting Converter User Configurable Undervoltage Lockout (UVLO) Tiny 8-Lead 3mm × 3mm DFN and 8-Lead MSOP Packages

Precision, Rail-to-Rail Input Current Sense Amplifier Features: Very Wide, Over-the-Top®, Input Common Mode Range   - Extends 44V Above V – (Independent of V +)   - Extends –0.3V Below V – Wide Power Supply Range: 2.85V to 36V Input Offset Voltage: 300µV Maximum Gain Accuracy: 1% Max Gain Congurable with External Resistors Operating Current: 150µA Slew Rate: 2V/µs Sense Input Current When Powered Down: 1nA Full-Scale Output Current: 1mA Minimum Operating Temperature Range –40°C to 125°C Available in 2mm × 3mm DFN and 8-Lead MSOP Packages

2-Phase Step-Up DC/DC Controller Features: 2-Phase Operation Reduces Required Input and Output Capacitance Programmable Switching Frequency: 150kHz to 500kHz 6V to 40V Input Range 10V Gate Drive with VCC ≥13V High Current Gate Drive (4A) Programmable Soft-Start and Current Limit Programmable Slope Compensation for High Noise Immunity MOSFET Gate Signals with Programmable Falling Edge Delay for External Synchronous Drivers Programmable Undervoltage Lockout Programmable Duty Cycle Clamp (50% or Higher) Thermally Enhanced 28-Lead TSSOP and 4mm x 5mm QFN Packages

Low Noise, 0.5% Tolerance, 5MHz to 28MHz, Pin Configurable Filter/ADC Driver Features: Pin Configurable Gain and Filter Response Up to 28MHz Few External Components Required Resistors Trimmed to 0.5% Typical Capacitors Trimmed to 0.5% Typical Very Low Noise: 80dB S/N in 100MHz Bandwidth Very Low Distortion (2VP-P): 1MHz: –100dBc 2nd, –123dBc 3rd 10MHz: –72dBc 2nd, –103dBc 3rd Adjustable Output Common Mode Voltage Rail-to-Rail Output Swing Power Configurability and Low Power Shutdown Tiny 0.75mm 20-Lead (4mm × 4mm) QFN Package

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

Single 12-/10-/8-Bit I2C VOUT DACs with 10ppm/C Reference Features: Integrated Precision Reference 2.5V Full-Scale 10ppm/°C (LTC2631-L) 4.096V Full-Scale 10ppm/°C (LTC2631-H) Maximum INL Error: 1LSB (LTC2631A-12) Bidirectional Reference: Input or 10ppm/°C Output 400kHz I2C Interface Nine Selectable Addresses (LTC2631-Z) Low Noise (0.7mVP-P , 0.1Hz to 200kHz) Guaranteed Monotonic Over Temperature 2.7V to 5.5V Supply Range (LTC2631-L) Low Power Operation: 180μA at 3V Power Down to 1.8μA Maximum (C and I Grades) Power-On Reset to Zero or Mid-Scale Options Double-Buffered Data Latches Guaranteed Operation From –40°C to 125°C (H-Grade) 8-Lead TSOT-23 (ThinSOT™) Package

Quad-Channel Isolators with Integrated DC/DC Converter (0/4 channel directionality) Features: isoPower integrated, isolated DC/DC converter Regulated 3.3 V or 5 V output Up to 400 mW output power Quad dc-to-25 Mbps (NRZ) signal isolation channels Schmitt trigger inputs 16-lead SOIC package with 7.6 mm creepage High temperature operation: 105°C High common-mode transient immunity: >25 kV/μs See data sheet for additional features