Standalone Linear Li-Ion Battery Charger with Thermistor Input Features: Charge Current Programmable up to 1A Charges Single Cell Li-Ion Batteries Directly from USB Port Preset 4.375V Float Voltage with ±0.4% Accuracy Thermistor Input for Temperature Qualified Charging Input Supply Present Logic Output Thermal Regulation Maximizes Charge Rate Without Risk of Overheating Programmable Charge Current Detection/Termination Programmable Charge Termination Timer Smart Pulsing Error Feature SmartStart™ Prolongs Battery Life 20µA Charger Quiescent Current in Shutdown Available in a Low Profile (0.75mm) 10-Lead (3mm × 3mm) DFN Package

USB Power Manager with Low-Loss Ideal Diode and Li-Ion Battery Charger Features: Seamless Transition Between Input Power Sources: Li-Ion Battery, USB and 5V Wall Adapter Low Loss (50mΩ) Ideal Diode Path from BAT to OUT Programmable Charge Current Detection (CHRG) Load Dependent Charging Guarantees USB Input Current Compliance Analog Gas Gauge Function Charges Single Cell Li-Ion Batteries Directly from USB Port Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate Without Risk of Overheating* Selectable 100% or 20% Current Limit (e.g., 500mA/100mA) Termination Timer Adapts to Actual Charge Current Preset 4.2V Charge Voltage with 0.8% Accuracy (4.1V for LTC4066-1) NTC Thermistor Input for Temperature Qualied Charging Thin Prole (0.75mm) 24-Lead 4mm x 4mm QFN Package Ultrathin Prole (0.55mm) 24-Lead 4mm x 4mm UTQFN Package (LTC4066 Only)

USB Power Manager with OVP and Li-Ion/Polymer Charger Features: Programmable Input Current Limit: Single Resistor at CLPROG Pin to Set and Monitor Input Current Battery Charger/Ideal Diode/Controller: 13V Overvoltage Protection Full Featured Battery Charger with 4.2V Float Up to 1.25A Programmable Charge Current Thermal Regulation Maximizes Charge Current Without Risk of Overheating Internal 2 Hour Termination Timer from Onset of Voltage Mode Charging Automatic Load Switchover to Battery Power with Internal Ideal Diode and Drive Output for Optional External MOSFET NTC Thermistor Input Bad Battery Time-Out Detection 4mm × 3mm 12-Lead DFN Package

Standalone Linear Li-Ion Battery Charger with Programmable Termination Features: Programmable Charge Current Up to 950mA Complete Linear Charger in DFN Package No MOSFET, Sense Resistor or Blocking Diode Required Thermal Regulation Maximizes Charge Rate Without Risk of Overheating* Charges Directly from a USB Port Programmable Charge Current Termination Preset 4.2V Charge Voltage with ±1% Accuracy Charge Current Monitor Output for Gas Gauging* Automatic Recharge Charge Status Output “AC Present” Output 2.9V Trickle Charge Threshold (LTC4068) Available Without Trickle Charge (LTC4068X) Soft-Start Limits Inrush Current Low Profile (3mm x 3mm x 0.75mm) DFN Package

60V, 250mA Linear Charger with Low Quiescent Current Features: Wide Input Voltage Range: 2.7V to 60V Adjustable Battery Voltage: 1.2V to 60V Adjustable Charge Current: 10mA to 250mA Low Quiescent Current While Charging: IIN = 4μA Ultralow Battery Drain When Shutdown or Charged: IBAT < 0.01μA Auto Recharge Input Voltage Regulation for High Impedance Sources Thermal Regulation Maximizes Output Current without Overheating Constant Voltage Feedback with ±0.5% Accuracy NTC Thermistor Input for Temperature Qualified Charging Adjustable Safety Timer Charging Status Indication Thermally Enhanced 10-Lead (3mm × 3mm) DFN Package AEC-Q100 Qualified for Automotive Applications

500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck Features: Complete Linear Battery Charger with Integrated Buck Converter Battery Charger: Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charge Rate Without Risk of Overheating Internal 4.5-Hour Safety Timer for Termination Charge Current Programmable Up to 500mA with 5% Accuracy C/10 Charge Current Detection Output 5µA Supply Current in Shutdown Mode Switching Regulator: High Efciency Synchronous Buck Converter 300mA Output Current 2.7V to 4.5V Input Range (Powered from BAT Pin) 0.8V to VBAT Output Range MODE Pin Selects Fixed (2.25MHz) Constant-Frequency PWM Mode or Low ICC (23µA) Burst Mode®  Operation 2µA BAT Current in Shutdown Mode

500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck Features: Complete Linear Battery Charger with Integrated Buck Converter Battery Charger: Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charge Rate Without Risk of Overheating Internal 4.5-Hour Safety Timer for Termination Charge Current Programmable Up to 500mA with 5% Accuracy C/10 Charge Current Detection Output 5µA Supply Current in Shutdown Mode Switching Regulator: High Efciency Synchronous Buck Converter 300mA Output Current 2.7V to 4.5V Input Range (Powered from BAT Pin) 0.8V to VBAT Output Range MODE Pin Selects Fixed (2.25MHz) Constant-Frequency PWM Mode or Low ICC (23µA) Burst Mode®  Operation 2µA BAT Current in Shutdown Mode

USB Power Manager with High Voltage Switching Charger Features: Seamless Transition Between Power Sources: Li-Ion Battery, USB, and 6V to 36V External Supply High Efciency 1.2A Charger from 6V to 36V Input with Adaptive Output Control (LTC4089) Load Dependent Charging from USB Input Guarantees Current Compliance 215mΩ Internal Ideal Diode plus Optional External Ideal Diode Controller Provides Low Loss Power Path When External Supply/USB Not Present Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate without Risk of Overheating Selectable 100% or 20% Current Limit (e.g., 500mA/100mA) from USB Input Preset 4.2V Charge Voltage with 0.8% Accuracy C/10 Charge Current Detection Output NTC Thermistor Input for Temperature Qualied Charging Tiny (6mm × 3mm × 0.75mm) 22-Pin DFN Package

Low Power Wireless Charger for Hearing Aids Features:Complete Low Power Wireless NiMH ChargerLow Minimum Input Voltage: 2.2VSmall Total Solution Volume1.5V, 25mA Linear Single-Cell NiMH ChargerTemperature Compensated Charge VoltageIntegrated Rectifier with Overvoltage LimitZinc-Air Battery DetectionReverse Polarity ProtectionThermally Enhanced 6-Lead (2mm × 2mm) DFN package

10mA Wireless Li-Ion Charger with 1.2V Step-Down DC/DC Converter Features: Wireless Li-Ion Battery Charger Plus High Efficiency Multi-Mode Charge Pump DC/DC Wideband Rx Frequency: DC to >10MHz Integrated Rectifier with Overvoltage Limit Pin Selectable Charge Voltage: 4.1V or 4.2V Charge Current: 10mA (Fixed) Low Battery Disconnect: 3.0V NTC Pin for Temperature Qualified Charging DC/DC Regulated Output: 1.2V DC/DC Output Current: Up to 60mA 50kHz/75kHz Switching, No Audible Noise Pushbutton and/or Digital on/off Control for DC/DC Thermally Enhanced 12-Lead 2mm × 2mm LQFN Package