Micropower Synchronous Buck-Boost DC/DC Converter Features: Single Inductor Regulated Output with Input Voltages Above, Below or Equal to the Output Wide VIN Range: 2.4V to 5.5V VOUT Range: 2.4V to 5.25V Up to 500mA Peak Output Current Synchronous Rectification: Up to 95% Efficiency Manual or Programmable Automatic Burst Mode® Operation Output Disconnect in Shutdown Programmable Oscillator: 300kHz to 2MHz Pin Compatible with LTC3440 Small Thermally Enhanced 10-Lead (3mm × 3mm) DFN and 10-Lead MSOP Packages

2A, 3MHz Micropower Synchronous Boost Converter Features: Synchronous Rectification: Up to 97% Efficiency 2A Switch Current Rating Fixed Frequency Operation Up to 3MHz Wide Input Range: 0.5V to 5V Very Low Quiescent Current: 38µA (Burst Mode® Operation) 2.6V to 5V Adjustable Output Voltage 0.85V (Typ) Start-Up Voltage No External Schottky Diode Required (VOUT < 4.3V) Synchronizable Switching Frequency Burst Mode Enable Control Antiringing Control Reduces Switching Noise PGOOD Output OPTI-LOOP® Compensation Very Low Shutdown Current: <1µA Small 10-Pin MSOP Package

Monolithic Linear Lithium-Ion Battery Charger with Thermal Regulation Features: Complete Linear Charger for 1-Cell Lithium-Ion Batteries Thermal Regulation Maximizes Charging Rate without Risk of Overheating* No External MOSFET, Sense Resistor or Blocking Diode Required Up to 1.5A Charging Current Preset Charge Voltage with 1% Accuracy Programmable Charge Current with 7% Accuracy Programmable Charge Termination Timer Tiny Thermally Enhanced 10-Pin MSOP Package Charge Current Monitor Useful for Gas Gauging* C/10 Charge Current Detection Output Automatic Recharge Thermistor Input for Temperature Qualified Charging AC Present Logic Output 4.1V/4.2V Pin Selectable Output Voltage

High Efficiency Thermoelectric Cooler Controller Features: High Efficiency, Low Noise Topology Adjustable Output Slew Rate Reduces EMI Full-Bridge Controller for Bidirectional Current Control Adjustable Pulse-by-Pulse Bidirectional TEC Current Limit Open/Shorted Thermistor Indication Solution Footprint in Less Than 0.6' x 0.8' (Double-Sided PCB) Available in 5mm x 5mm QFN and 28-Pin SSOP Packages TEC Voltage Clamping TEC Current, Voltage and Heat/Cool Status Outputs Adjustable/Synchronizable Oscillator Frequency Reduces Filter Component Size and System Noise 2.5V Reference Voltage Output 2.7V Minimum Operating Voltage

4A, High Efficiency, Standalone Li-Ion Battery Charger Features: Complete Charger Controller for 2-, 3- or 4-Cell Lithium-Ion Batteries High Conversion Efficiency: Up to 96% Output Currents Exceeding 4A ±0.8% Accurate Preset Voltages: 8.4V, 12.6V, 16.8V Built-In Charge Termination with Automatic Restart AC Adapter Current Limiting Maximizes Charge Rate* Automatic Conditioning of Deeply Discharged Batteries Thermistor Input for Temperature Qualified Charging Wide Input Voltage Range: 6V to 28V 0.5V Dropout Voltage; Maximum Duty Cycle: 98% Programmable Charge Current: ±4% Accuracy Indicator Outputs for Charging, C/10 Current Detection and AC Adapter Present Charging Current Monitor Output 16-Pin Narrow SSOP Package

550kHz, PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator Features: Wide VIN Range: 4V to 36V Operation Reduces Required Input Capacitance and Power Supply Induced Noise ±1% Output Voltage Accuracy Phase-Lockable Fixed Frequency: 250kHz to 550kHz True Remote Sensing Differential Amplifier PolyPhase™ Extends from Two to Twelve Phases Reduces the Size and Value of Inductors Current Mode Control Ensures Current Sharing 1.1MHz Effective Switching Frequency (2-Phase) OPTI-LOOP™ Compensation Reduces COUT Power Good Output Voltage Indicator Very Low Dropout Operation: 99% Duty Cycle Adjustable Soft-Start Current Ramping Internal Current Foldback Plus Shutdown Timer Overvoltage Soft-Latch Eliminates Nuisance Trips Available in 5mm x 5mm QFN and 28-Lead SSOP Package

Dual 3 MHz, 1200mA Buck Regulator with Two 300 mA LDOs Features: Main input voltage range: 2.3 V to 5.5 V Two 1200 mA buck regulators and two 300 mA LDOs 24-lead, 4 mm × 4 mm LFCSP or 28-lead TSSOP package Regulator accuracy: ±1.8% Factory programmable or external adjustable VOUTx 3 MHz buck operation with forced PWM and auto PWM/PSM modes BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V LDO1/LDO2: output voltage range from 0.8 V to 5.2 V LDO1/LDO2: input supply voltage from 1.7 V to 5.5 V LDO1/LDO2: high PSRR and low output noise

2 A/1.2 A DC-to-DC Switching Regulator with Independent Positive and Negative Outputs Features: Wide input supply voltage range: 2.85 V to 15 V Generates well regulated, independently resistor programmable VPOS and VNEG outputs Boost regulator to generate VPOS output Adjustable positive output to 39 V Integrated 2.0 A main switch Optional single-ended primary-inductor converter (SEPIC) configuration for automatic step-up/step-down Inverting regulator to generate VNEG output Adjustable negative output to VIN − 39 V Integrated 1.2 A main switch True shutdown for both positive and negative outputs 1.2 MHz/2.4 MHz switching frequency with optional external frequency synchronization from 1.0 MHz to 2.6 MHz Resistor programmable soft start timer Slew rate control for lower system noise Individual precision enable and flexible start-up sequence control for symmetric start, VPOS first, or VNEG first Out-of-phase operation UVLO, OCP, OVP, and TSD protection 4 mm × 4 mm, 20-lead LFCSP and 20-lead TSSOP −40°C to +125°C junction temperature range Supported by the ADIsimPower tool set

Ultralow Power Boost Regulator with MPPT and Charge Management Features:Boost regulator with maximum power point tracking (MPPT) Hysteretic controller for best ultralight load efficiency 320 nA ultralow quiescent current (CBP ≥ MINOP) 260 nA ultralow quiescent current (CBP < MINOP) Input voltage operation range from 80 mV to 3.3 V Cold start from 380 mV (typical) with charge pump Open circuit voltage (OCV) sensing for MPPT Programmable MPPT ratio for photovoltaic (PV) or thermoelectric generator (TEG) energy sources Programmable shutdown point on MINOP pinEnergy storage management Programmable voltage monitor (2.2 V to 5.2 V) to support charging and prevent overcharging or overdischarging Power path management for an optional backup primary cell battery connected to the BACK_UP pinRF transmission friendly Temporary shutdown boost regulator via microcontroller (MCU) communication

20 V, 200 mA, Low Noise, CMOS LDO Linear Regulator Features: Low noise: 11 μV rms independent of fixed output voltage PSRR of 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz, VOUT ≤ 5 V, VIN = 7 V Input voltage range: 2.7 V to 20 V Maximum output current: 200 mA Initial accuracy: ±0.8% Accuracy over line, load, and temperature −1.2% to +1.5%, TJ = −40°C to +85°C ±1.8%, TJ = −40°C to +125°C Low dropout voltage: 200 mV (typical) at a 200 mA load,  VOUT = 5 V User programmable soft start (LFCSP and SOIC only) Low quiescent current, IGND = 50 μA (typical) with no load Low shutdown current: 1.8 μA at VIN = 5 V, 3.0 μA at VIN = 20 V Stable with a small 2.2 μF ceramic output capacitor Fixed output voltage options: 1.8 V, 2.5 V, 3.3 V, 4.5 V, and 5.0 V 16 standard voltages between 1.2 V and 5.0 V are available Adjustable output from 1.2 V to VIN – VDO, output can be adjusted above initial set point Precision enable 2 mm × 2 mm, 6-lead LFCSP, 8-Lead SOIC, 5-Lead TSOT AEC-Q100 qualified for automotive applications