Micropower USB Power Manager with Li-Ion Charger, Always-On LDO and Buck Regulator Features: 12μA Standby Mode Quiescent Current (All Outputs On) Seamless Transition Between Input Power Sources: Li-Ion/Polymer Battery and USB 240mΩ Internal Ideal Diode Provides Low Loss PowerPath™ High Efficiency 200mA Buck Regulator Always-On 150mA Low Dropout (LDO) Linear Regulator Pushbutton On/Off Control With System Reset Full Featured Li-Ion/Polymer Battery Charger Programmable Charge Current With Thermal Limiting Instant-On Operation With Discharged Battery 3mm × 3mm × 0.75mm 20-Pin QFN Package

Micropower USB Power Manager with Li-Ion Charger, Always-On LDO and Buck Regulator Features: 12μA Standby Mode Quiescent Current (All Outputs On) Seamless Transition Between Input Power Sources: Li-Ion/Polymer Battery and USB 240mΩ Internal Ideal Diode Provides Low Loss PowerPath™ High Efficiency 200mA Buck Regulator Always-On 150mA Low Dropout (LDO) Linear Regulator Pushbutton On/Off Control With System Reset Full Featured Li-Ion/Polymer Battery Charger Programmable Charge Current With Thermal Limiting Instant-On Operation With Discharged Battery 3mm × 3mm × 0.75mm 20-Pin QFN Package

High Efficiency Bidirectional Multicell Battery Balancer Features: Bidirectional Synchronous Flyback Balancing of Up to 6 Li-Ion or LiFePO4 Cells in Series Up to 10A Balancing Current (Set by Externals) Integrates Seamlessly with the LTC680x Family of Multicell Battery Stack Monitors Bidirectional Architecture Minimizes Balancing Time and Power Dissipation Up to 92% Charge Transfer Efficiency Stackable Architecture Enables >1000V Systems Uses Simple 2-Winding Transformers 1MHz Daisy-Chainable Serial Interface with 4-Bit CRC Packet Error Checking High Noise Margin Serial Communication Numerous Fault Protection Features 48-Lead Exposed Pad QFN and LQFP Packages AEC-Q100 Qualified for Automotive Applications

Addressable High Efficiency Bidirectional Multicell Battery Balancer Features: Bidirectional Synchronous Flyback Balancing of Up to 6 Li-Ion or LiFePO4 Cells in Series Up to 10A Balancing Current (Set by Externals) Integrates Seamlessly with the LTC680x Family of Multicell Battery Stack Monitors Bidirectional Architecture Minimizes Balancing Time and Power Dissipation Up to 92% Charge Transfer Efficiency Stackable Architecture Enables >800V Systems Uses Simple 2-Winding Transformers 1MHz Serial Interface with 4-Bit CRC Packet Error Checking Individually Addressable with 5-Bit Address Numerous Fault Protection Features 48-Lead Exposed Pad QFN and LQFP Packages AEC-Q100 Qualified for Automotive Application

Lead Acid Battery Balancer Features: Single IC Balances Up to Four 12V Lead-Acid Batteries in Series All NFET Design Stackable to Balance Larger Series Battery Packs Standalone Balancing Operation: Requires No External μP or Additional Control Circuitry Balancing Current Limited by External PTC Thermistor Continuous Mode and Timer Mode Programmable UV and OV Fault Thresholds Programmable Termination Time and Termination Voltage Thermally Enhanced 38-Lead TSSOP Package Click here to read "Life Extension Through Charge Equalization of Lead-Acid Batteries" on IEEE Xplore

Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT Features: Programmable Charge Current Up to 800mA No MOSFET, Sense Resistor or Blocking Diode Required Complete Linear Charger in ThinSOT™ Package for Single Cell Lithium-Ion Batteries Constant-Current/Constant-Voltage Operation with Thermal Regulation* to Maximize Charge Rate Without Risk of Overheating Charges Single Cell Li-Ion Batteries Directly from USB Port Preset 4.2V Charge Voltage with ±1% Accuracy Charge Current Monitor Output for Gas Gauging* Automatic Recharge Charge Status Output Pin C/10 Charge Termination 25µA Supply Current in Shutdown 2.9V Trickle Charge Threshold (LTC4054) Available Without Trickle Charge (LTC4054X) Soft-Start Limits Inrush Current Available in 5-Lead SOT-23 Package

Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT Features: Programmable Charge Current Up to 800mA No MOSFET, Sense Resistor or Blocking Diode Required Complete Linear Charger in ThinSOT™ Package for Single Cell Lithium-Ion Batteries Constant-Current/Constant-Voltage Operation with Thermal Regulation* to Maximize Charge Rate Without Risk of Overheating Charges Single Cell Li-Ion Batteries Directly from USB Port Preset 4.2V Charge Voltage with ±1% Accuracy Charge Current Monitor Output for Gas Gauging* Automatic Recharge Charge Status Output Pin C/10 Charge Termination 25µA Supply Current in Shutdown 2.9V Trickle Charge Threshold (LTC4054) Available Without Trickle Charge (LTC4054X) Soft-Start Limits Inrush Current Available in 5-Lead SOT-23 Package

Linear Li-Ion Charger with Termination in ThinSOT Features: Standalone Li-Ion Charger with Termination Programmable Termination Timer No Sense Resistor or Blocking Diode Required Suitable for USB-Powered Charging Undervoltage Charge Current Limiting Preset Charge Voltage with ±0.6% Accuracy Programmable Charge Current: 200mA to 700mA Automatic Recharge with Shortened Charge Cycle Self-Protection for Overcurrent/Overtemperature 40µA Supply Current in Shutdown Mode Negligible Battery Drain Current in Shutdown Low Battery Charge Conditioning (Trickle Charging) CHRG Status Output including AC Present PCB Total Solution Area only 75mm² (700mA) Low Profile (1mm) SOT-23 Package

Standalone Linear NiMH/NiCd Fast Battery Charger Features: Complete Fast Charger Controller for Single, 2-, 3- or 4-Series Cell NiMH/NiCd Batteries No Firmware or Microcontroller Required Termination by –V, Maximum Voltage or Maximum Time No Sense Resistor or Blocking Diode Required Automatic Recharge Keeps Batteries Charged Programmable Fast Charge Current: 0.4A to 2A Accurate Charge Current: ±5% at 2A Fast Charge Current Programmable Beyond 2A with External Sense Resistor Automatic Detection of Battery Precharge for Heavily Discharged Batteries Optional Temperature Qualified Charging Charge and AC Present Status Outputs Can Drive LED Automatic Sleep Mode with Input Supply Removal Negligible Battery Drain in Sleep Mode: <1µA Manual Shutdown Input Supply Range: 4.5V to 10V Available in 16-Lead DFN and TSSOP Packages

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