FAN5405UCX - Fairchild

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

FAN5405UCX
Manufacturer

Fairchild
ChipWorker Part#

CW85502936
Category

Battery Management IC
Package

WLCSP-20
Description

Battery Charger Li-Ion/Li-Pol 1250mA 3.5V to 4.4V 20Pin WLCSP T/R
Documentation

Datasheet

FAN5405UCX Global Supplier

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FAN5405UCX Specifications

Attribute	Attribute Value

Part Number	FAN5405UCX
Manufacturer	Fairchild
ChipWorker Part#	CW85502936
Category	Battery Management IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	20 Pin
Case/Package	WLCSP-20
Output Voltage	1.8 V
Output Current	1.25 A
Output Voltage (Max)	4.4 V
Output Voltage (Min)	3.5 V
Output Current (Max)	1250 mA
Output Current (Min)	550 mA
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	4V ~ 6V
Supply Voltage (Max)	6 V
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Size-Length	1.96 mm
Size-Width	1.87 mm
Size-Height	0.378 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
HK STC License	NLR

Product Description

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

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- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
- Income quality control (IQC), 800+ qualified distributors.
- Authorities test the chip to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray inspection
- XRF inspection
- Electrical testing
- Surface testing

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