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Description
The FAN54010 family (FAN5401X) combines a highly Integrated Switch-Mode Charger, to minimize single-cell Lithiumion (Li-Ion) charging time from a USB power source, and a boost regulator to power a USB peripheral from the battery.

Features
■ Fully Integrated, High-Efficiency Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
■ Faster Charging than Linear
■ Charge Voltage Accuracy: ±0.5% at 25°C ±1% from 0 to 125°C
■ ±5% Input Current Regulation Accuracy
■ ±5% Charge Current Regulation Accuracy
■ 20V Absolute Maximum Input Voltage
■ 6V Maximum Input Operating Voltage
■ 1.45A Maximum Charge Rate
■ Programmable through High-Speed I2C Interface (3.4Mb/s) With Fast Mode Plus Compatibility
    – Input Current
    – Fast-Charge / Termination Current
    – Charger Voltage
    – Termination Enable
■ 3MHz Synchronous Buck PWM Controller With Wide Duty Cycle Range
■ Small Footprint 1μH External Inductor
■ Safety Timer With Reset Control
■ 1.8V Regulated Output from VBUS for Auxiliary Circuits
■ Weak Input Sources Accommodated by Reducing Charging Current to Maintain Minimum VBUS Voltage
■ Low Reverse Leakage to Prevent Battery Drain to VBUS
■ 5V, 500mA Boost Mode for USB OTG for 3.0 to 4.5V Battery Input

Applications
■ Cell Phones, Smart Phones, PDAs
■ Tablet, Portable Media Players
■ Gaming Device, Digital Cameras

Description
The FAN5400 family (FAN540X) combines a highly Integrated Switch-Mode Charger, to minimize single-cell Lithium-ion (Li-Ion) charging time from a USB power source, and a boost regulator to power a USB peripheral from the battery.
The charging parameters and operating modes are programmable through an I2C Interface that operates up to 3.4Mbps. The Charger and boost regulator circuits switch at 3MHz to minimize the size of external passive components.
The FAN540X provides battery charging in three phases: conditioning, constant current, and constant voltage.

Features
■ Fully Integrated, High-Efficiency Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
■ Faster Charging than Linear
■ Charge Voltage Accuracy:   ±0.5% at 25°C
                                        ±1% from 0 to 125°C
■5% Input Current Regulation Accuracy
■5% Charge Current Regulation Accuracy
■ 20V Absolute Maximum Input Voltage
■ 6V Maximum Input Operating Voltage
■ 1.25A Maximum Charge Rate
■ Programmable through High-Speed I2C Interface (3.4Mb/s) With Fast Mode Plus Compatibility
   – Input Current
   – Fast-Charge / Termination Current
   – Charger Voltage
   – Termination Enable
■  3MHz Synchronous Buck PWM Controller With Wide Duty Cycle Range
■ Small Footprint 1H External Inductor
■ Safety Timer With Reset Control
■ 1.8V Regulated Output from VBUS for Auxiliary Circuits
■ Weak Input Sources Accommodated by Reducing Charging Current to Maintain Minimum VBUS Voltage
■ Low Reverse Leakage to Prevent Battery Drain to VBUS
■ 5V, 300mA Boost Mode for USB OTG for 2.5 to 4.5V Battery Input

Applications
■ Cell Phones, Smart Phones, PDAs
■ Tablet, Portable Media Players
■ Gaming Device, Digital Cameras

DESCRIPTION
The LX2201 Linear Battery Charger is a multi-state (2 stage) Li-Ion battery Charger (Constant current / Constant voltage) that can supply up to 2A of charging current into a single cell Li-Ion battery.
LX2201 is a cost effective , high performance USB battery Charger. The LX2201 features a 2A high charge current, With automatic power savings using isolated battery topology, user programmability in USB charging, and an extended battery life With low RdsON in discharge.

KEY FEATURES
◾ 2A Charge Current
◾ USB Compliant Charging States
◾ Low RdsON in Discharge Mode
◾ Power Saving and Conditional Mode for Deep Discharge
◾ Selectable Li-Ion Battery for 4.1V or 4.2V Applications
◾ Internal Pass Element Can Function as a Reverse Direction Load Switch
◾ No Sense Resistor Required
◾ Full Capacity Charging
◾ True Charge Indicator
◾ Wall Supply Regulator Tolerance 5V + 10%
◾ Built In MOSFET Driver For Easy AC Adapter/USB Implementation
◾ Topping Charge With Voltage Monitoring Mode
◾ Inherent Load Disconnect
◾ Small, High Power 20-lead MLP package

APPLICATIONS
◾ Batteries With 350mAH to 2AH Ratings
◾ Cell Phones
◾ PDAs
◾ Charging Cradles
◾ Digital Cameras
◾ Low Cost Single Li-Ion Cell Chargers

General Description
The RT9503A is a Fully Integrated low cost single-cell LiIon battery Charger IC ideal for portable applications. The RT9503A is capable of being powered up via the AC adapter and USB (Universal Serial Bus) port inputs. The RT9503A can automatically detect and select the AC adapter and the USB port as the power source for the Charger. The RT9503A enters sleep mode when both supplies are removed.

Features
Automatic Input Supplies Selection
18V Maximum Rating for AC Adapter
Integrated Selectable 100mA and 500mA USB Charge Current
Internal Integrated Power MOSFETs
AC Adapter Power Good Status Indicator
Charge Status Indicator
External Capacitor Programmable Safety Timer
Under Voltage Protection
Over Voltage Protection
Automatic Recharge Feature
Battery Temperature Monitoring
Small 16-Lead WQFN Package
Thermal Feedback Optimizing Charge Rate
Power Path Controller
RoHS Compliant and Halogen Free

Applications
Digital Cameras
Cellular Phones
PDAs , Smart Phones and MP3 Players
Portable Instruments

General Description
The RT9503 is a Fully Integrated low cost single-cell LiIon battery Charger IC ideal for portable applications. The
RT9503 is capable of being powered up from AC adapter and the USB (Universal Serial Bus) port inputs. The
RT9503 can automatically detect and select the AC adapter and the USB port as the power source for the
Charger. The RT9503 enters sleep mode when both supplies are removed.

Features
Automatic Input Supplies Selection
18V Maximum Rating for AC Adapter
Integrated Selectable 100mA and 500mA USB Charge Current
Internal Integrated Power FETs AC Adapter Power Good Status Indicator
Charge Status Indicator
External Capacitor Programmable Safety Timer
Under Voltage Protection
Over Voltage Protection
Automatic Recharge Feature
Battery Temperature Monitoring
Small 16-Lead WQFN Package
Thermal Feedback Optimizing Charge Rate
Power Path Controller
RoHS Compliant and 100% Lead (Pb)-Free

Applications
Digital Cameras
Cellular Phones
PDAs and Smart Phones and MP3
Portable Instruments

Li-Ion/Li-Polymer Battery Charger Accepting Two Power Sources

The ISL6299 is a Fully Integrated low-cost single-cell Li-Ion or Li-polymer battery Charger. The Charger accepts two power inputs, normally one from a USB (Universal Serial Bus) port and the other from a desktop cradle. The ISL6299 is an ideal Charger for smart handheld devices that need to communicate With a personal computer via USB.

Features
• Complete Charger for Single-Cell Li-Ion/Polymer Batteries
• Dual Input Power Sources for Cradle and USB
• Low Component Count
• Integrated Pass Element
• Fixed 380mA USB Charge Current
• Programmable Cradle Charge Current
• Charge Current Thermaguard™ for Thermal Protection
• 28V Maximum Voltage for the Cradle Input
• Charge Indication
• Adapter Presence Indication
• Less than 0.5µA Leakage Current off the Battery when No Input Power Attached
• Programmable end-of-charge current With latch for Cradle Input
• Ambient Temperature Range: -40°C to 85°C
• Pb-Free Available (RoHS Compliant)

Applications
• Smart Handheld Devices
• Cell Phones, PDAs, MP3 Players
• Digital Still Cameras
• Handheld Test Equipment

Li-Ion/Li-Polymer Battery Charger Accepting Two Power Sources

The ISL6299A is a Fully Integrated low-cost single-cell Li-Ion or Li-polymer battery Charger. The Charger accepts two power inputs, normally one from a USB (Universal Serial Bus) port and the other from a desktop cradle. The ISL6299A is an ideal Charger for smart handheld devices that need to communicate With a personal computer via USB.

Features
• Complete Charger for Single-Cell Li-Ion/Polymer Batteries
• Dual Input Power Sources for Cradle and USB
• Low Component Count
• Integrated Pass Element
• Fixed 380mA USB Charge Current
• Programmable Cradle Charge Current
• Charge Current Thermaguard™ for Thermal Protection
• 28V Maximum Voltage for the Cradle Input
• Charge Indication
• Adapter Presence Indication
• Less than 0.5µA Leakage Current off the Battery when No Input Power Attached
• Programmable end-of-charge current With latch for Cradle Input
• Ambient Temperature Range: -40°C to 85°C
• No External Blocking Diode Required
• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
• Smart Handheld Devices
• Cell Phones, PDAs, MP3 Players
• Digital Still Cameras
• Handheld Test Equipment

Description
The FAN54010 family (FAN5401X) combines a highly Integrated Switch-Mode Charger, to minimize single-cell Lithiumion (Li-Ion) charging time from a USB power source, and a boost regulator to power a USB peripheral from the battery.

Features
■ Fully Integrated, High-Efficiency Charger for Single-Cell Li-Ion and Li-Polymer Battery Packs
■ Faster Charging than Linear
■ Charge Voltage Accuracy: ±0.5% at 25°C ±1% from 0 to 125°C
■ ±5% Input Current Regulation Accuracy
■ ±5% Charge Current Regulation Accuracy
■ 20V Absolute Maximum Input Voltage
■ 6V Maximum Input Operating Voltage
■ 1.45A Maximum Charge Rate
■ Programmable through High-Speed I2C Interface (3.4Mb/s) With Fast Mode Plus Compatibility
    – Input Current
    – Fast-Charge / Termination Current
    – Charger Voltage
    – Termination Enable
■ 3MHz Synchronous Buck PWM Controller With Wide Duty Cycle Range
■ Small Footprint 1μH External Inductor
■ Safety Timer With Reset Control
■ 1.8V Regulated Output from VBUS for Auxiliary Circuits
■ Weak Input Sources Accommodated by Reducing Charging Current to Maintain Minimum VBUS Voltage
■ Low Reverse Leakage to Prevent Battery Drain to VBUS
■ 5V, 500mA Boost Mode for USB OTG for 3.0 to 4.5V Battery Input

Applications
■ Cell Phones, Smart Phones, PDAs
■ Tablet, Portable Media Players
■ Gaming Device, Digital Cameras

Li-Ion/Li Polymer Battery Charger

The ISL6292C is an Integrated single-cell Li-Ion or Li-polymer battery Charger capable of operating With an input voltage as low as 2.4V. This Charger is designed to work With various types of ac adapters.

Features
• Complete Charger for Single-Cell Li-Ion Batteries
• Very Low Thermal Dissipation
• Integrated Pass Element and Current Sensor
• No External Blocking Diode Required
• 1% Voltage Accuracy
• Programmable Current Limit up to 1.5A
• Charge Current Thermal Foldback
• Accepts Multiple Types of Adapters
• Guaranteed to Operate at 2.65V After Start Up
• Ambient Temperature Range: -20°C to 70°C
• Thermally-Enhanced DFN Packages
• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
• Handheld Devices including Medical Handhelds
• PDAs, Cell Phones and Smart Phones
• Portable Instruments, MP3 Players
• Self-Charging Battery Packs
• Stand-Alone Chargers
• USB Bus-Powered Chargers

The MAX8903A is an Integrated 1-cell Li+ Charger and Smart Power Selector With dual (AC adapter and USB) power inputs. The switch mode Charger uses a high switching frequency to eliminate heat and allow tiny external components. It can operate With either separate inputs for USB and AC adapter power, or from a single input that accepts both. All power switches for charging and switching the load between battery and external power are included on-chip. No external MOSFETs, blocking diodes, or current-sense resistors are required.