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Fairchild Semiconductor Electronic Components Datasheet

FAN54045 Datasheet

Li-Ion Switching Charger

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July 2013
FAN54040 FAN54047
USB-OTG, 1.55 A, Li-Ion Switching Charger with Power
Path and 2.3 A Production Test Support
Features
Fully Integrated, High-Efficiency Charger for Single-Cell
Li-Ion and Li-Polymer Battery Packs
Power Path Circuit Ensures Fast System Startup with a
Dead Battery when VBUS is Connected
1.55 A Maximum Charge Current
Float Voltage Accuracy:
- 0.5% at 25°C
- 1% from 0 to 125°C
5% Input and Charge Current Regulation Accuracy
Temperature-Sense Input Prevents Auto-Charging for
JEITA Compliance
Thermal Regulation and Shutdown
4.2 V at 2.3 A Production Test Mode
5 V, 500 mA Boost Mode for USB OTG
28 V Absolute Maximum Input Voltage
6 V Maximum Input Operating Voltage
Programmable through High-Speed I2C Interface
(3.4 Mb/s) with Fast Mode Plus Compatibility
- Input Current
- Fast-Charge / Termination Current
- Float Voltage
- Termination Enable
3 MHz Synchronous Buck PWM Controller with
Wide Duty Cycle Range
Small Footprint 1 H External Inductor
Safety Timer with Reset Control
Dynamic Input Voltage Control
Very Low Battery Current when Charger Inactive
Applications
Cell Phones, Smart Phones, PDAs
Tablet, Portable Media Players
Gaming Device, Digital Cameras
All trademarks are the property of their respective owners.
© 2012 Fairchild Semiconductor Corporation
FAN54040 – FAN54047 • Rev. 1.0.2
Description
The FAN5404X family includes I2C controlled 1.55 A USB-
compliant switch-mode chargers with power path operation
and USB OTG boost operation. Integrated with the charger,
the IC supports production test mode, which provides 4.2 V
at up to 2.3 A to the system.
To facilitate fast system startup, the IC includes a power
path circuit, which disconnects the battery from the system
rail, ensuring that the system can power up quickly following
a VBUS connection. The power path circuit ensures that the
system rail stays up when the charger is plugged in, even if
the battery is dead or shorted.
The charging parameters and operating modes are
programmable through an I2C Interface that operates up to
3.4 Mbps. The charger and boost regulator circuits switch at
3 MHz to minimize the size of external passive components.
The FAN5404X provides battery charging in three phases:
conditioning, constant current, and constant voltage. The
integrated circuit automatically restarts the charge cycle
when the battery falls below a voltage threshold. If the input
source is removed, the IC enters a high-impedance mode
blocking battery current from leaking to the input. Charge
status is reported back to the host through the I2C port.
Dynamic input voltage control prevents a weak adapters
voltage from collapsing, ensuring charging capability from
such adapters.
The FAN5404X is available in a 25-bump, 0.4 mm pitch,
WLCSP package.
VBUS
CBUS
PGND
PMID
CMID
POK_B
ILIM
SDA
SCL
DIS
STAT
AGND
FAN5404X
SW
SYS
L1
CSYS
Q5
GATE
External
PMOS
VBAT
NTC
REF RREF
CREF
T
SYSTEM
LOAD
CBAT
BATTERY
+
Figure 1. Typical Application
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

FAN54045 Datasheet

Li-Ion Switching Charger

No Preview Available !

Ordering Information
Part Number Temperature Range
FAN54040UCX
FAN54041UCX
FAN54042UCX(1)
FAN54045UCX(1)
FAN54046UCX(1)
-40 to 85°C
FAN54047UCX
Note:
1. Contact Fairchild Sales for availability.
Package
25-Bump, Wafer-Level
Chip-Scale Package
(WLCSP), 0.4 mm Pitch
PN Bits: IC_INFO[5:3]
000
001
010
101
110
110
Packing Method
Tape and Reel
Table 1. Feature Comparison Summary
Part Number Slave Address
Automatic Charge
FAN54040
1101011
Yes
FAN54041
1101011
No
FAN54042
1101011
Yes
FAN54045
1101011
No
FAN54046
1101011
No
FAN54047
1101011
Yes
Battery Absent Behavior
Off
Off
On
Off
On
On
E1 Pin
POK_B
POK_B
POK_B
ILIM
ILIM
ILIM
© 2012 Fairchild Semiconductor Corporation
FAN54040 FAN54047 Rev. 1.0.2
2
www.fairchildsemi.com


Part Number FAN54045
Description Li-Ion Switching Charger
Maker Fairchild Semiconductor
Total Page 30 Pages
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