42V, 6A Synchronous Step-Down Regulator with Current Sense and 3A Quiescent Current Features: Rail-to-Rail Current Sense Amplifier with Monitor Wide Input Voltage Range: 3.4V to 42V Ultralow Quiescent Current Burst Mode® Operation: 3μA IQ Regulating 12VIN to 3.3VOUT Output Ripple < 10mVP-P High Efficiency Synchronous Operation: 95% Efficiency at 3A, 5VOUT from 12VIN 94% Efficiency at 3A, 3.3VOUT from 12VIN Fast Minimum Switch-On Time: 40ns Low Dropout Under All Conditions: 250mV at 3A Allows Use of Small Inductors Low EMI Adjustable and Synchronizable: 200kHz to 2.2MHz Current Mode Operation Accurate 1V Enable Pin Threshold Internal Compensation Output Soft-Start and Tracking Small Thermally Enhanced 3mm × 6mm 28-Lead QFN Package

Multichemistry Buck Battery Charger Controller with Digital Telemetry System Features: Multichemistry Li-Ion/Polymer, LiFePO4, or Lead-Acid Battery Charger with Termination High Efficiency Synchronous Buck Battery Charger Digital Telemetry System Monitors VBAT, IBAT, RBAT, NTC Ratio (Battery Temperature), VIN, IIN, VSYSTEM, Die Temperature Coulomb Counter and Integrated 14-Bit ADC Wide Charging Input Voltage Range: 4.5V to 35V Wide Battery Voltage Range: Up to 35V Input Undervoltage Charge Current Limit Loop Maximum Power Point Tracking Optional I2C Serial Port Control Input Current Limit Prioritizes System Load Output Input and Output Ideal Diodes Provide Low Loss PowerPath™ Operation Instant-On Operation with Discharged Battery

Synchronous SEPIC/Inverting/Boost Controller with Output Current Control Features: Wide Input Range: 4.5V to 80V Rail-to-Rail Output Current Monitor and Control Input Voltage Regulation for High Impedance Inputs C/10 or Power Good Indication Pin MODE Pin for Forced CCM or Pulse-Skipping Operation Switching Frequency Up to 750kHz Easily Configurable as a Boost, SEPIC, Inverting or Flyback Converter with Single Feedback Pin Can Be Synchronized to External Clock High Gain EN/FBIN Pin Accepts Slowly Varying Input Signals 20-Lead TSSOP Package

1kHz to 33MHz Resistor Set SOT-23 Oscillator Features: One External Resistor Sets the Frequency Fast Start-Up Time: <1ms 1kHz to 33MHz Frequency Range Frequency Error ≤1.5% 5kHz to 20MHz (TA = 25°C) Frequency Error ≤2% 5kHz to 20MHz (TA = 0°C to 70°C) ±40ppm/°C Temperature Stability 0.05%/V Supply Stability 50% ±1% Duty Cycle 1kHz to 2MHz 50% ±5% Duty Cycle 2MHz to 20MHz 1mA Typical Supply Current 100Ω CMOS Output Driver Operates from a Single 2.7V to 5.5V Supply Low Profile (1mm) SOT-23 (ThinSOT™ Package) AEC-Q100 Qualified for Automotive Applications

20dB Gain Block, 50 IF Amplifier Features: 50Ω Matched 20MHz to 1400MHz 20.8dB Power Gain 46.2dBm OIP3 at 240MHz Into 50Ω NF = 2.6dB at 240MHz 0.6nV/√Hz Total Input Noise S11 < –10dB Up to 2.0GHz S22 < –10dB Up to 1.4GHz >2.0VP-P Linear Output Swing P1dB = 22.0dBm 50Ω Single-Ended Input/Output Insensitive to VCC Variation A-Grade 100% OIP3 Tested at 240MHz Input/Output Internally Matched to 50Ω Single 5V Supply

0.25ppm Noise, Low Drift Precision References Features: Low Noise: 0.25ppmP-P (0.1Hz to 10Hz) 625nVP-P for the LTC6655-2.5 0.21ppmRMS (10Hz to 1kHz) for the LTC6655LN CNR = 100µF Low Drift: 2ppm/°C Max High Accuracy: ±0.025% Max No Humidity Sensitivity (LS8 Package) Thermal Hysteresis (LS8): 30ppm (–40°C to 85°C) Long-Term Drift (LS8): 20ppm/√kHr 100% Tested at –40°C, 25°C and 125°C Load Regulation: <10ppm/mA Sinks and Sources Current: ±5mA Low Dropout: 500mV Maximum Supply Voltage: 13.2V Low Power Shutdown: <20µA Max Available Output Voltages: 1.25V, 2.048V, 2.5V, 3V, 3.3V, 4.096V, 5V Available in an 8-Lead MSOP and High Stability Hermetic 5mm × 5mm LS8 Packages

0.25ppm Noise, Low Drift Precision References Features: Low Noise: 0.25ppmP-P (0.1Hz to 10Hz) 625nVP-P for the LTC6655-2.5 0.21ppmRMS (10Hz to 1kHz) for the LTC6655LN CNR = 100µF Low Drift: 2ppm/°C Max High Accuracy: ±0.025% Max No Humidity Sensitivity (LS8 Package) Thermal Hysteresis (LS8): 30ppm (–40°C to 85°C) Long-Term Drift (LS8): 20ppm/√kHr 100% Tested at –40°C, 25°C and 125°C Load Regulation: <10ppm/mA Sinks and Sources Current: ±5mA Low Dropout: 500mV Maximum Supply Voltage: 13.2V Low Power Shutdown: <20µA Max Available Output Voltages: 1.25V, 2.048V, 2.5V, 3V, 3.3V, 4.096V, 5V Available in an 8-Lead MSOP and High Stability Hermetic 5mm × 5mm LS8 Packages

60V Synchronous 4-Switch Buck-Boost Controller Features: 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Synchronous Switching: Up to 98.5% Efficiency Wide VIN Range: 4.7V to 60V 2% Output Voltage Accuracy: 1.2V ≤ VOUT < 60V 6% Output Current Accuracy: 0V ≤ VOUT < 60V Input and Output Current Regulation with Current Monitor Outputs No Top FET Refresh in Buck or Boost VOUT Disconnected from VIN During Shutdown C/10 Charge Termination and Output Shorted Flags Capable of 100W or Greater per IC Easy Parallel Capability to Extend Output Power 38-Lead TSSOP with Exposed Pad

100MHz to 40GHz Linear-in-dB RMS Power Detector with 35dB Dynamic Range Features: Ultra Wide Matched Input Frequency Range: 100MHz to 40GHz 35dB Linear Dynamic Range (< ±1dB Error) 29mV/dB Logarithmic Slope ±1dB Flat Response from 200MHz to 30GHz Accurate RMS Power Measurement of High Crest Factors (Up to 12dB) Modulated Waveforms Low Power Shutdown Mode Low Supply Current: 30mA at 3.3V (Typical) Small 2mm × 2mm Plastic DFN8 Package I-Grade: –40°C to 105°C Rated H-Grade: –40°C to 125°C Rated with Guaranteed Log-Slope and Log-Intercept ESD Rating: 3500V HBM, 1500V CDM

Current Sense Amplifier, Reference and Comparator with POR Features: Current Sense Amplifier Fast Step Response: 500ns Low Offset Voltage: 200μV Maximum Low Gain Error: 0.2% Maximum Internal 400mV Precision Reference Internal Comparator Power-On Reset Capability Fast Response Time: 500ns Total Threshold Error: ±1.25% Maximum Wide Supply Range: 2.7V to 60V Supply Current: 450μA Specified for –40°C to 125°C Temperature Range Available in 8-Lead MSOP and 8-Lead (2mm × 3mm) DFN Packages