FAN5402UCX Fairchild Semiconductor, FAN5402UCX Datasheet

FAN5402UCX

Manufacturer Part Number

FAN5402UCX

Description

IC LI-ION SW CHARGER USB 20WLCSP

Manufacturer

Fairchild Semiconductor

Datasheet

1.FAN5400UCX.pdf (5 pages)

Specifications of FAN5402UCX

Function

Charge Management

Battery Chemistry

Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

20-UFBGA, WLCSP

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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FAN5400 Family

USB-Compliant Single-Cell Li-Ion Switching Charger with

USB-OTG Boost Regulator

Features

Applications

FAN5400 Family • Rev. 1.0.2

All trademarks are the property of their respective owners.

Fully Integrated, High-Efficiency Charger for Single-Cell

Li-Ion and Li-Polymer Battery Packs

Faster Charging than Linear

Charge Voltage Accuracy:

±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 I

(3.4Mb/s) with Fast Mode Plus Compatibility

–

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, 300mA Boost Mode for USB OTG for 2.5 to 4.5V

Battery Input

Cell Phones, Smart Phones, PDAs

Tablet, Portable Media Players

Gaming Device, Digital Cameras

Input Current

Fast-Charge / Termination Current

Charger Voltage

Termination Enable

±0.5% at 25°C

±1% from 0 to 125°C

C Interface

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 I

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.

To ensure USB compliance and minimize charging time, the

input current is limited to the value set through the I

Charge termination is determined by a programmable

minimum current level. A safety timer with reset control

provides a safety backup for the I

The integrated circuit (IC) automatically restarts the charge

cycle when the battery falls below an internal threshold. If the

input source is removed, the IC enters a high-impedance

mode with leakage from the battery to the input prevented.

Charge status is reported back to the host through the I

port. Charge current is reduced when the die temperature

reaches 120°C.

The FAN540X can operate as a boost regulator on

command from the system. The boost regulator includes a

soft-start that limits inrush current from the battery.

The FAN540X is available in a 1.96 x 1.87mm, 20-bump,

0.4mm pitch WLCSP package.

BUS

MID

Figure 1. Typical Application (FAN5403-05 Pinout)

OTG/USB#

DISABLE

VBUS

1μF

STAT

PMID

4.7μF

SDA

SCL

FAN540X

C Interface that operates up to

PGND

CSIN

VBAT

VREG

REG

C host.

OUT

1μF

1μH

SYSTEM

November 2010

www.fairchildsemi.com

LOAD

0.1μF

10μF

+ Battery

C host.

BAT

68mΩ

SENSE

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FAN5402UCX Summary of contents

Page 1

... Cell Phones, Smart Phones, PDAs Tablet, Portable Media Players Gaming Device, Digital Cameras All trademarks are the property of their respective owners. © 2008 Fairchild Semiconductor Corporation FAN5400 Family • Rev. 1.0.2 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 ...

Page 2

... Ordering Information Part Number Temperature Range FAN5400UCX -40 to 85°C FAN5401UCX -40 to 85°C FAN5402UCX -40 to 85°C FAN5403UCX -40 to 85°C FAN5404UCX -40 to 85°C FAN5405UCX -40 to 85°C Table 1. Feature Comparison Summary Part Slave PN Bits: Number Address REG3[4:3] FAN5400 01 1101011 FAN5401 00 1101011 FAN5402 01 1101011 FAN5403 ...

Page 3

... Block Diagram VBUS C IN1 PMID Q1A Greater than VBAT ON Less than VBAT OFF © 2008 Fairchild Semiconductor Corporation FAN5400 Family • Rev. 1.0.2 Figure 2. IC and System Block Diagram PMID Q3 CHARGE PUMP Q1 Q1A CSIN Q1B SW Q1B Q2 OFF ON PGND VBAT SYSTEM Figure 3. Power Stage ...

Page 4

... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...

Page 5

... Fairchild Semiconductor Corporation FAN5400 Family • Rev. 1.0.2 36 www.fairchildsemi.com ...

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