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PDF FAN54300 Data sheet ( Hoja de datos )
| Número de pieza | FAN54300 | |
| Descripción | Li-Ion Switching Charger | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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August 2013
FAN54300 — USB-Compliant, Dual-Power Input, 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
Accepts USB or Dedicated Power Input Source
5 V, 300 mA Boost Mode for USB OTG from 2.5 to 4.5 V
Battery Input
Charge Voltage Accuracy: 0.5% at TA=25°C
1% from TA=0 to 125°C
5% USB Input Current Regulation Accuracy
5% Charge Current Regulation Accuracy
20 V Absolute Maximum Input Voltage
9.5 V Maximum Input Operating Voltage on VIN Pin,
6.5 V Maximum on VBUS Pin
Up to 1.5 A Maximum Charge Rate
Programmable Charge and Mode through High-Speed I2C
Interface (3.4 Mb/s) with Fast Mode Plus Compatibility
– Input Current
– Fast-Charge / Termination Current
– Charger Voltage
– Safety Timer
– Termination Enable
3 MHz Synchronous Buck PWM Controller with Wide Duty
Cycle Range
Small Footprint, 1 H, External Inductors
Safety Timer with Reset Control
Weak Input Sources Accommodated by Reducing
Charging Current to Maintain Minimum VBUS Voltage
Low Reverse Leakage from Battery Drain to VBUS or VIN
Programmable LED Drive for Charge Indication
Register and Slave Addresses Compatible with FAN540X
and FAN542X Families
Description
The FAN54300 combines two highly integrated switch-mode
chargers and a boost regulator to minimize single-cell Li-Ion
charging time from a USB and/or auxiliary power source.
Charging parameters and operating modes are programmable
through an I2C Bus® interface that operates up to 3.4 Mbps.
The charger and boost regulator circuits switch at 3 MHz to
minimize the size of the external passive components.
The FAN54300 provides battery charging in three phases:
conditioning, constant current, and constant voltage.
To ensure USB compliance and minimize charging time, the
USB input current is limited to the value set through the I2C
host. Charge termination is determined by a programmable
minimum current level. A safety timer with reset control
provides a safety backup for the I2C host.
The 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 I2C port. Charge current
is reduced when the die temperature reaches 120°C.
The FAN54300 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 FAN54300 is available in a 30-bump, 0.4 mm pitch,
wafer-level, chip-scale package (WLCSP).
Applications
Cell Phones, Smart Phones, PDAs
Digital Cameras
Portable Media Players
Ordering Information
Part Number Temperature Range
FAN54300UCX
-40 to 85°C
© 2010 Fairchild Semiconductor Corporation
FAN54300 • Rev. 1.0.4
Package
30-Ball, WLCSP, 5x6 Array, 0.4mm Pitch,
586 µm Package Height
Packing
Tape and Reel
www.fairchildsemi.com
1 page  
Pin Configuration
BOOTV VREF V2V5
A1 A2 A3
SDA BOOTU
A4 A5
VIN SCL VBUS
B1 B2 B3 B4 B5
PMID2
C1 C2
SRST
C3
PMID1
C4 C5
SW2 DIS SW1
D1 D2 D3 D4 D5
GND
E1 E2 E3 E4 E5
LED
F1
OTG
F2
CSIN VBAT STAT
F3 F4 F5
Figure 4. Pin Assignments (Top View)
A5 A4 A3 A2 A1
B5 B4 B3 B2 B1
C5 C4 C3 C2 C1
D5 D4 D3 D2 D1
E5 E4 E3 E2 E1
F5 F4 F3 F2 F1
Figure 5. Pin Assignments (Bottom View)
Pin Definitions
Pin #
A1
A2
A3
A4
A5
B1, B2
B3
B4, B5
C1, C2
C3
C4, C5
D1, D2
D3
D4, D5
E1–E5
F1
Name
BOOTV
VREF
V2V5
SDA
BOOTU
VIN
SCL
VBUS
PMID2
SRST
PMID1
SW2
DIS
SW1
GND
LED
Description
BOOT. High-side NMOS driver supply. Connect a 10nF capacitor from SW2 to this pin.
Bias Regulator Output. Connect to a 1 F capacitor to PGND. This pin supplies the internal gate drive
and power supply to the IC while charging. Up to 5 mA of current can be provided from this pin to drive
external circuits. This pin is active when either VIN or VBUS are above VBAT.
2.5 V Regulator. Connect to a 1 F capacitor to PGND. Up to 5 mA can be provided from this pin to
drive external circuits. This regulator is powered only when VIN is connected.
I2C Interface Serial Data. This pin should not be left floating.
BOOT. High-side NMOS driver supply. Connect a 10 nF capacitor from SW1 to this pin.
Charger Input Voltage. Bypass with a minimum of 1 F, 16 V capacitor to GND.
I2C Interface Serial Clock. This pin should not be left floating.
USB Input Voltage. Bypass with a 1 F, 16 V capacitor to GND.
Power Input Voltage for VIN Power Source. Power input to the charger regulator, bypass point for
the VIN input current sense, and high-voltage input switch. Bypass with a minimum of 4.7 F, 16 V
capacitor to PGND.
Safety Reset. When LOW, both safety registers are reset to their default values. When HIGH, the
safety registers reset when VBAT drops below VSHORT.
Power Input Voltage for VBUS Power Source. Power input to the VBUS switching charger regulator,
bypass point for the VBUS input current sense, and high-voltage input switch. Bypass with a minimum
of 4.7 F, 6.3 V capacitor to PGND.
Switching Node for VIN Charger. Connect to the output inductor.
Charge Disable. When this pin is HIGH, charging is disabled and no timers are reset. When LOW,
charging is controlled by the I2C registers. This pin does not affect the 32-second timer.
Switching Node for VBUS Charger and OTG Boost. Connect to the output inductor.
Ground. Power return for gate drive and power transistors as well as IC signal ground. The connection
from this pin to the bottoms of the CPMID capacitors should be as short as possible.
Light Emitting Diode Output. Up to 5 mA current source drive from the active PMID indicates the
battery is charging.
© 2010 Fairchild Semiconductor Corporation
FAN54300 • Rev. 1.0.4
5
www.fairchildsemi.com
5 Page 
Electrical Specifications (Continued)
Unless otherwise specified: circuit of Figure 1, recommended operating temperature range for TJ and TA, VBUS or VIN = 5.0 V,
HZ1, HZ2, OPA_MODE = 0, (Charger Mode). SCL, SDA, OTG = 0 or 1.8 V. Typical values are for TJ = 25°C.
Symbol
Parameter
Conditions
Min. Typ. Max. Units
Protection and Timers
VBUS Over-Voltage Shutdown
VBUSOVP
Hysteresis
VBUS Rising
VBUS Falling
6.12 6.31 6.50
100
VIN Over-Voltage Shutdown
VINOVP
Hysteresis
VIN Rising
VIN Falling
9.5 10.0 10.5
100
Battery Short-Circuit Threshold VBAT Rising
VSHORT
Hysteresis
VBAT Falling
2.00 2.05 2.10
100
ISHORT
TSHUTDWN
TCF
Short-Circuit Current
Thermal Shutdown Threshold(4)
Hysteresis(4)
Thermal Regulation Threshold(4)
VBAT < VSHORT
TJ Rising
TJ Falling
Charge Current Reduction Begins
30 40 50
165
10
120
tINT
t32SEC
Detection Interval
32-Second Timer(5)
32-Second Mode
2.1
21.0 31.5
t15MIN
∆tLF
15-Minute Timer
15-Minute Mode
Low Frequency Timer Accuracy Charger Inactive
12.0 13.5 15.0
–25 25
Notes:
2. Refers to negative inductor current. At lower battery charging current, of about 20 mA, non-synchronous switching
operation commences.
3. Q2 and Q6 always turn on for »60 ns and then turn off if the current is below ISYNC.
4. Guaranteed by design.
5. This tolerance applies to all timers on the IC, including soft-start and deglitching timers.
V
mV
V
mV
V
mA
°C
°C
s
s
min
%
© 2010 Fairchild Semiconductor Corporation
FAN54300 • Rev. 1.0.4
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet FAN54300.PDF ] | |
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