FAN5400 Family— USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
November 2010
FAN5400 Family
USB-Compliant Single-Cell Li-Ion Switching Charger with
USB-OTG Boost Regulator
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
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
2
programmable through an I C 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.
To ensure USB compliance and minimize charging time, the
2
input current is limited to the value set through the I C host.
Charge termination is determined by a programmable
minimum current level. A safety timer with reset control
2
provides a safety backup for the I C host.
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.
2
Charge status is reported back to the host through the I C
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.
L1
1μH
0.1μF
±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 C Interface
(3.4Mb/s) with Fast Mode Plus Compatibility
2
–
–
–
–
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, 300mA Boost Mode for USB OTG for 2.5 to 4.5V
Battery Input
VBUS
C
BUS
1μF
SW
PGND
CSIN
FAN540X
VBAT
C
OUT
R
SENSE
68mΩ
PMID
C
MID
4.7μF
+
Battery
Applications
Cell Phones, Smart Phones, PDAs
Tablet, Portable Media Players
Gaming Device, Digital Cameras
SDA
SCL
DISABLE
OTG/USB#
STAT
VREG
C
REG
1μF
SYSTEM
LOAD
C
BAT
10μF
Figure 1. Typical Application (FAN5403-05 Pinout)
All trademarks are the property of their respective owners.
© 2008 Fairchild Semiconductor Corporation
FAN5400 Family • Rev. 1.0.2
www.fairchildsemi.com
FAN5400 Family — USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
Ordering Information
Part Number
FAN5400UCX
FAN5401UCX
FAN5402UCX
FAN5403UCX
FAN5404UCX
FAN5405UCX
Temperature Range
-40 to 85°C
-40 to 85°C
-40 to 85°C
-40 to 85°C
-40 to 85°C
-40 to 85°C
Package
20- Bump, Wafer-
Level Chip-Scale
Package (WLCSP),
0.4mm Pitch,
Estimated Size: 1.96
x 1.87mm
PN Bits:
IC_INFO[4:3]
01
00
01
10
11
10
Packing Method
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Table 1. Feature Comparison Summary
Part
Number
FAN5400
FAN5401
FAN5402
FAN5403
FAN5404
FAN5405
PN Bits:
REG3[4:3]
01
00
01
10
11
10
Slave
Address
1101011
1101011
1101011
1101011
1101011
1101010
Automatic
Charge
Yes
No
Yes
Yes
No
Yes
Special
(1)
Charger
No
No
No
Yes
Yes
Yes
Safety
Limits
No
No
No
Yes
Yes
Yes
Battery
Absent
Behavior
OFF
OFF
ON
OFF
OFF
ON
E2 Pin
AUXPWR
(Connect to
VBAT)
VREG
(E3 Pin)
PMID
DISABLE
1.8V
Note:
1. Special charger is a current limited charger that is not a USB compliant source.
Table 2. Recommended External Components
Component
L1
C
BAT
C
MID
C
BUS
Description
1μH, 20%, 1.3A, 2016
10μF, 20%, 6.3V, X5R, 0603
4.7μF, 10%, 6.3V, X5R, 0603
1.0μF, 10%, 25V, X5R, 0603
Vendor
Murata: LQM2MPN1R0M
or Equivalent
Murata: GRM188R60J106M
TDK: C1608X5R0J106M
Murata: GRM188R60J475K
TDK: C1608X5R0J475K
Murata GRM188R61E105K
TDK:C1608X5R1E105M
Parameter
L
DCR (Series R)
C
C
(2)
Typ.
1.0
85
10
4.7
1.0
Unit
μH
mΩ
μF
μF
μF
C
Note:
2. 6.3V rating is sufficient for C
MID
since PMID is protected from over-voltage surges on VBUS by Q3 (Figure 3).
© 2008 Fairchild Semiconductor Corporation
FAN5400 Family • Rev. 1.0.2
www.fairchildsemi.com
2
FAN5400 Family — USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
Physical Dimensions
BALL A1
INDEX AREA
0.03 C
2X
D
1.60
0.40
E
A
F
B
A1
1.20
Ø0.20
Cu Pad
Ø0.30 Solder
Mask Opening
0.40
0.03 C
2X
TOP VIEW
RECOMMENDED LAND PATTERN
(NSMD TYPE)
0.06 C
0.05 C
0.625
0.547
E
0.378±0.018
0.208±0.021
C
D
SEATING PLANE
SIDE VIEWS
NOTES:
1.20
0.40
E
D
C
B
A
1 2 3 4
F
(X) ±0.018
0.005
Ø0.260±0.02
20X
C A B
A. NO JEDEC REGISTRATION APPLIES.
B. DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS AND TOLERANCE
PER ASMEY14.5M, 1994.
D. DATUM C IS DEFINED BY THE SPHERICAL
CROWNS OF THE BALLS.
E. PACKAGE NOMINAL HEIGHT IS 586 MICRONS
±39 MICRONS (547-625 MICRONS).
F. FOR DIMENSIONS D, E, X, AND Y SEE
PRODUCT DATASHEET.
G. DRAWING FILNAME: MKT-UC020AArev2.
1.60
0.40
(Y) ±0.018
BOTTOM VIEW
Figure 51. 20-Ball WLCSP, 4X5 Array, 0.4mm Pitch, 250µm Ball
Product-Specific Dimensions
Product
FAN540XUCX
D
1.960 +0.030
E
1.870 +0.030
X
0.180
Y
0.335
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’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2008 Fairchild Semiconductor Corporation
FAN5400 Family • Rev. 1.0.2
www.fairchildsemi.com
35
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