Doubler Charge Pumps with Low Noise Linear Regulator Features: Low Output Noise: 60µVRMS (100kHz BW) Adjustable or Fixed Boosted Output Adjustable Output Voltage Range: 2.5V to 5.5V Fixed Output Voltages: 3.3V, 5V Wide Input Voltage Range: 1.8V to 4.4V Uses Small Ceramic Capacitors No Inductors Required Output Current up to 50mA 550kHz Switching Frequency Low Operating Current: 150µA Low Shutdown Current: 1µA Internal Thermal Shutdown and Current Limiting Available in 8-Pin MSOP and SO Packages

IEEE 802.3bt PD Interface with Forward/Flyback Controller Features: IEEE 802.3af/at/bt Powered Device (PD) with Forward/Flyback Controller Supports Up to 71.3W PDs 5-Event Classification Sensing Superior Surge Protection (100V Absolute Maximum) Wide Junction Temperature Range (–40°C to 125°C) >94% End-to-End Efficiency with LT4321 Ideal Bridge External Hot Swap N-Channel MOSFET for Lowest Power Dissipation and Highest System Efficiency No-Opto Flyback Operation Auxiliary Power Support as Low as 9V Easy Migration of LTPoE++® PDs to IEEE 802.3bt PDs Pin Compatible with LT4276A/B/C 28-Lead 4mm × 5mm QFN Package

5W AutoResonant Wireless Power Transmitter Features: Monolithic 5W Wireless Power Transmitter AutoResonant™ Switching Frequency Adjusts to Resonant Capacitance and Transmit Coil Inductance* Transmit Power Automatically Adjusts to Receiver Load* Input Voltage Range: 3V to 5.5V Integrated 100mΩ Full Bridge Switches Multiple Foreign Object Detection Methods Programmable Average Input Current Limit and Monitor NTC Input for System/Component Temperature Qualified Power Transfer Wide Operating Switching Frequency Range: 50kHz to 250kHz Thermally Enhanced 4mm × 5mm QFN 20-Lead Package

36V Battery Charger and Power Backup Manager Features: Seamless Transition Between Primary Power Source and Li-Ion Battery 2A High Voltage Step-Down Regulator with Adaptive Output Control Internal 75mΩ Ideal Diode Plus Optional External Ideal Diode Controller Provides Low Loss PowerPath™ When Primary Supply Not Present Wide Input Voltage Range: 6V to 36V (60V Abs Max) 4.45V Max Output Voltage Full Featured Li-Ion Battery Charger Pin Selectable 4.1V and 4.2V Charge Voltage Options Thermally Enhanced Low Profile (0.75mm) 6mm × 3mm 22-Lead DFN Package

Dual, 16-Bit, 666ksps/ch Differential SoftSpan ADC with Wide Input Common Mode Range Features: 666ksps per Channel Throughput Two Simultaneous Sampling Channels ±1.25LSB INL (Maximum) Guaranteed 16-Bit, No Missing Codes Differential, Wide Common Mode Range Inputs Per-Channel SoftSpan Input Ranges: ±4.096V, 0V to 4.096V, ±2.048V, 0V to 2.048V ±5V, 0V to 5V, ±2.5V, 0V to 2.5V 93.4dB Single-Conversion SNR (Typical) −114dB THD (Typical) at fIN = 2kHz 105dB CMRR (Typical) at fIN = 200Hz Rail-to-Rail Input Overdrive Tolerance Guaranteed Operation to 125°C Integrated Reference and Buffer (4.096V) SPI CMOS (1.8V to 5V) and LVDS Serial I/O Internal Conversion Clock, No Cycle Latency 74mW Power Dissipation (Typical) 32-Lead (5mm × 5mm) QFN Package

60V Dual Output Step-Down Controller with Digital Power System Management Features: PMBus/I2C Compliant Serial Interface Telemetry Read-Back Includes VIN, IIN, VOUT, IOUT, Temperature and Faults Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV/OC, Frequency, and Control Loop Compensation Output Error Less Than ±0.5% Over Temperature Integrated 16-Bit ADC and 12-Bit DAC Integrated High Side Current Sense Amplifier Internal EEPROM with ECC and Fault Logging Integrated N-Channel MOSFET Gate DriversPower Conversion Wide VIN Range: 5V to 60V VOUT0, VOUT1 Range: 1V to 40V Analog Current Mode Control Accurate PolyPhase® Current Sharing for Up to 6 Phases (85kHz to 500kHz) Available in a 52-Lead (7mm× 8mm) QFN Package

EN55022B Compliant 58V, 4A Step-Down DC/DC Module Regulator Features: Complete Low EMI Switch Mode Power Supply EN55022 Class B Compliant Wide Input Voltage Range: 3.1V to 58V Up to 4A Output Current Output Voltage Range: 0.5V ≤ VOUT ≤ 0.94 • VIN ±1.67% Total DC Output Voltage Error Over Line, Load and Temperature (–40°C to 125°C) Parallel and Current Share with Multiple LTM4653s Analog Output Current Indicator Programmable Input Voltage Limiting Constant-Frequency Current Mode Control Power Good Indicator and Programmable Soft-Start Overcurrent/Overvoltage/Overtemperature Protection 15mm × 9mm × 5.01mm BGA Package

15V, 4A Step-Up Module Regulator Features: Complete Solution in <1cm2 (Single-Sided PCB) or 0.5cm2 (Dual-Sided PCB) Input Voltage Range: 1.8V to 5.5V, Down to 0.7V After Start-Up Output Voltage Range: 2.5V to 15V 4A Switch Current Dual Phase Operation ±3% Maximum Total DC Output Voltage Regulation Over Load, Line and Temperature Output Disconnect in Shut Down Inrush Current Limit External Frequency Synchronization Selectable Burst Mode® Operation Output Overvoltage and Overtemperature Protection 6.25mm × 6.25mm × 2.42mm BGA package

Dual 50A or Single 100A Module Regulator with Digital Power System Management Features: Dual 50A or Single 100A Digitally Adjustable Outputs with Digital Interface for Control, Compensation and Monitoring Wide Input Voltage: 4.5V to 16V Output Voltage Range: 0.5V to 1.8V ~90% Full Load Efficiency from 12VIN to 1VOUT at 100A ±0.5% Maximum DC Output Error Over Temperature ±3% Current Readback Accuracy (25°C to 125°C) Integrated Input Current Sense Amplifier 400kHz PMBus-Compliant I2C Serial Interface Supports Telemetry Polling Rates Up to 125Hz Integrated 16-Bit Σ ADC Constant Frequency Current Mode Control Parallel and Current Share Multiple Modules 15mm × 22mm × 7.87mm BGA PackageReadable Data: Input and Output Voltages, Currents, and Temperatures Running Peak Values, Uptime, Faults and Warnings Internal EEPROM and Fault Logging with ECCWritable Data and Configurable Parameters: Output Voltage, Voltage Sequencing and Margining Digital Soft-Start/Stop Ramp Optimize Analog Loop Compensation OV/UV/OT, UVLO, Frequency and Phasing

Low Noise, Low Drift Single-Supply Operational Amplifiers (Dual) Features: Single- or dual-supply operation  Low noise: 4.7 nV/√Hz @ 1 kHz  Wide bandwidth: 3.4 MHz  Low offset voltage: 100 μV  Very low drift: 0.2 μV/°C  Unity gain stable  No phase reversal