LTPoE++/PoE+/PoE PD Forward/Flyback Controller Features: IEEE802.3af/at and LTPoE++™ 90W Powered Device (PD) with Forward/Flyback Controller LT4276A Supports All of the Following Standards: LTPoE++ 38.7W, 52.7W, 70W and 90W IEEE 802.3at 25.5W Compliant IEEE 802.3af up to 13W Compliant LT4276B is IEEE 802.3at/af Compliant LT4276C is IEEE 802.3af Compliant Superior Surge Protection (100V Absolute Maximum) Wide Junction Temperature Range (–40°C to 125°C) Auxiliary Power Support as Low as 9V No Opto-Isolator Required for Flyback Operation External Hot Swap™ N-Channel MOSFET for Lowest Power Dissipation and Highest System Efficiency >94% End-to-End Efficiency with LT4321 Ideal Bridge Available in a 28-Lead 4mm × 5mm QFN Package

16-/14-/11-Bit 2.7Gsps DACs Features:80dBc SFDR at 50MHz fOUT>68dBc SFDR from DC to 1080MHz fOUT40mA Nominal Full-Scale, ±1V Output Compliant10mA to 60mA Adjustable Full-Scale Current RangeSingle or Dual Port DDR LVDS and DHSTL InterfaceLow Latency (7.5 Cycles for Single Port, 11 Cycles for Dual Port)>78dBc 2-Tone IMD from DC to 1000MHz fOUT–156dBc/Hz Additive Phase Noise at 1MHz Offset for 65MHz fOUT170-Lead (9mm × 15mm) BGA Package

16-/14-/11-Bit 2.7Gsps DACs Features:80dBc SFDR at 50MHz fOUT>68dBc SFDR from DC to 1080MHz fOUT40mA Nominal Full-Scale, ±1V Output Compliant10mA to 60mA Adjustable Full-Scale Current RangeSingle or Dual Port DDR LVDS and DHSTL InterfaceLow Latency (7.5 Cycles for Single Port, 11 Cycles for Dual Port)>78dBc 2-Tone IMD from DC to 1000MHz fOUT–156dBc/Hz Additive Phase Noise at 1MHz Offset for 65MHz fOUT170-Lead (9mm × 15mm) BGA Package

Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Charger Features: Dual Input, Single Output DC/DCs with Input Prioritizer Energy Harvesting Input: 3.0V to 19V Buck DC/DC Battery Input: Up to 4.2V Buck-Boost DC/DC 10mA Shunt Battery Charger with Programmable Float Voltages: 3.45V, 4.0V, 4.1V, 4.2V Low Battery Disconnect Ultra Low Quiescent Current: 950nA at no Load Integrated Supercapacitor Balancer Up to 50mA of Output Current Programmable DC/DC Output Voltage, Buck UVLO, and Buck-Boost Peak Input Current Integrated Low-Loss Full-Wave Bridge Rectifier Input Protective Shunt: Up to 25mA at VIN ≥ 20V 5mm × 5mm QFN-32 Package

Active Clamp Synchronous Forward Controller Features: Input Voltage Range: 8.5V to 100V Programmable Volt-Second Clamp High Efficiency Control: Active Clamp, Synchronous Rectification, Programmable Delays Short-Circuit (Hiccup Mode) Overcurrent Protection Programmable Soft-Start/Stop Programmable OVLO and UVLO with Hysteresis Programmable Frequency (100kHz to 500kHz) Synchronizable to an External Clock

1.4MHz, Single Cell DC/DC Converter in 5-Lead SOT-23 Features: Uses Tiny Capacitors and Inductor Internally Compensated Fixed Frequency 1.4MHz Operation Operates with VIN as Low as 1.1V 3V at 30mA from a Single Cell 5V at 200mA from 3.3V Input 15V at 60mA from Four Alkaline Cells High Output Voltage: Up to 34V Low Shutdown Current: <1µA Low VCESAT Switch: 300mV at 300mA 5-Lead SOT-23 Package

Quad, 12-Bit + Sign, 5Msps/Ch Simultaneous Sampling ADC Features: 5Msps/Ch Throughput Rate Four Simultaneously Sampling Channels Guaranteed 12-Bit, No Missing Codes 8VP-P Differential Inputs with Wide Input Common Mode Range 77dB SNR (Typ) at fIN = 2.2MHz –86dB THD (Typ) at fIN = 2.2MHz Guaranteed Operation to 125°C Single 3.3V or 5V Supply Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal Reference 1.8V to 2.5V I/O Voltages CMOS or LVDS SPI-Compatible Serial I/O Power Dissipation 45mW/Ch (Typ) Small 52-Lead (7mm × 8mm) QFN Package

Precision, Low Power Differential Amplifier/ADC Driver Family Features: Available with User Settable Gain or Fixed-Gain of 0.5V/V, 1V/V, or 2V/V 2.9nV/√Hz Input-Referred Noise 2mA Maximum Supply Current 45ppm Max Gain Error 0.5ppm/°C Max Gain Error Drift 94dB Min CMRR 100µV Max Offset Voltage 50nA Max Input Offset Current Fast Settling: 720ns to 18-Bit, 8VP-P Output 2.8V (±1.4V) to 11V (±5.5V) Supply Voltage Range Differential Rail-to-Rail Outputs Input Common Mode Range Includes Ground Low Distortion: 118dB SFDR at 2kHz, 18VP-P 500MHz Gain-Bandwidth Product 35MHz –3dB Bandwidth Low Power Shutdown: 20µA (VS = 3V) 8-Lead MSOP, 2mm × 3mm 8-Lead DFN and 3mm × 3mm 16-lead LFCSP Packages

60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller Features: Wide VIN Range: 4.5V to 60V (65V Abs Max) Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 99% • VIN Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) No External Bootstrap Diodes Required Low Operating IQ: 29μA (One Channel On) Selectable Gate Drive UVLO Thresholds Out-of-Phase Operation Reduces Required Input Capacitance and Power Supply Induced Noise Phase-Lockable Frequency: 75kHz to 850kHz Selectable Continuous, Pulse Skipping or Low Ripple Burst Mode® Operation at Light Loads Selectable Current Limit (LTC3892/LTC3892-2) Very Low Dropout Operation: 99% Duty Cycle Power Good Output Voltage Monitors (LTC3892/LTC3892-2) Low Shutdown IQ: 3.6μA Small 32-Lead 5mm × 5mm QFN Package (LTC3892/LTC3892-2) or TSSOP Package (LTC3892-1)

20V, 200mA, Ultralow Noise, Ultrahigh PSRR Precision DAC/Reference Buffer Features: Ultralow Wideband Noise: 1.2µVRMS (10Hz to 100kHz) Ultralow 1/f Noise: 0.6µVP-P (0.1Hz to 10Hz) Ultralow Spot Noise: 4nV/√Hz at 1kHz and Above Ultrahigh PSRR: 73dB at 1MHz Ultralow Input Offset: 125µV Output Source Current: 200mA Wide Input Voltage Range: 1.8V to 20V Rail to Rail Output Voltage Range: 0V to 15V Single Capacitor Improves Noise and PSRR Fast Start-Up for VIN Pin FAULT Flag High Bandwidth: 1MHz Low Dropout Voltage: 350mV Programmable Current Limit Precision Enable/UVLO Parallelable for Lower Noise and Higher Current Internal Current Limit with Foldback Minimum Output Capacitor: 4.7µF Ceramic Reverse Supply and Reverse Current Protection Thermal Limit with Hysteresis 10-Lead 3mm × 3mm DFN and 12-Lead MSOP