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LTC3566EUF-2#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
LTC3566/LTC3566-2
1
3566fb
FEATURES
APPLICATIONS
DESCRIPTION
High Effi ciency USB
Power Manager Plus 1A
Buck-Boost Converter
The LTC
®
3566 family are highly integrated power manage-
ment and battery charger ICs for Li-Ion/Polymer battery
applications. They include a high effi ciency current lim-
ited switching PowerPath manager with automatic load
prioritization, a battery charger, an ideal diode, and a high
effi ciency synchronous buck-boost switching regulator.
Designed specifi cally for USB applications, the LTC3566
family’s switching power manager automatically limits input
current to a maximum of either 100mA or 500mA for USB
applications or 1A for adapter-powered applications.
The LTC3566 family’s switching input stage transmits nearly
all of the 2.5W available from the USB port to the system
load with minimal power wasted as heat. This feature
allows the LTC3566 family to provide more power to the
application and eases the constraint of thermal budgeting in
small spaces. The LTC3566-2 automatically reduces charge
current to maintain a regulated 3.6V V
OUT
during low bat-
tery conditions; the LTC3566 does not. The synchronous
buck-boost DC/DC can provide up to 1A.
The LTC3566 family is available in a low profi le 24-lead
4mm × 4mm QFN surface mount package.
LTC3566/LTC3566-2 USB Power Manager with 3.3V/1A Buck-Boost
POWER MANAGER
■
High Effi ciency Switching PowerPath™ Controller
with Bat-Track™ Adaptive Output Control
■
Programmable USB or Wall Input Current Limit
(100mA/500mA/1A)
■
Full Featured Li-Ion/Polymer Battery Charger
■
Instant-On Operation with Discharged Battery
■
1.5A Maximum Charge Current
■
Internal 180mΩ Ideal Diode Plus External Ideal Diode
Controller Powers Load in Battery Mode
■
Low No-Load I
Q
when Powered from BAT (<30μA)
1A BUCK-BOOST DC/DC
■
High Effi ciency (1A I
OUT
)
■
2.25MHz Constant Frequency Operation
■
Low No-Load Quiescent Current (~13µA)
■
Zero Shutdown Current
■
Pin Control of All Functions
■
HDD Based MP3 Players, PDA, GPS, PMP Products
■
Other USB Based Handheld Products
SW
V
OUT
=
BAT + 300mV
TO OTHER
DC/DCs
3.3V/25mA
ALWAYS
ON LDO
3.3V/1A
HDD
FROM AC
ADAPTER
FROM USB
V
OUT1
3566 TA01
SWCD1
SWAB1
V
IN1
LDO3V3
BAT
GATE
V
OUT
NTC
V
BUS
CLPROG
PROG
VC1
FB1
LTC3566/LTC3566-2
ILIM0
ILIM1
MODE
EN1
CHRG
CHRGEN
GND EXPOSED PAD
DIGITAL CONTROL
T
+
Li-Ion
4.7μF
100k
0.1μF
3.01k
2k
100k
10μF
3.3μH
OPTIONAL
1μF
1μF
2.2μH
324k
105k
1.3nF
10μF
I
OUT
(A)
0
EFFICIENCY (%)
20
40
60
80
0.10.01 1
3566 TA01b
100
10
30
50
70
90
BAT = 4.2V
BAT = 3.3V
V
BUS
= 5V
I
BAT
= 0mA
10x MODE
Switching Regulator Effi ciency to
System Load (P
OUT
/P
BUS
)
TYPICAL APPLICATION
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. PowerPath
and Bat-Track are trademarks of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents including 6522118, 6404251.
LTC3566/LTC3566-2
2
3566fb
ABSOLUTE MAXIMUM RATINGS
V
BUS
(Transient) t < 1ms,
Duty Cycle < 1% ...................................... –0.3V to 7V
V
BUS
(Static), V
IN1
, BAT, NTC, CHRG, MODE, I
LIM0
,
I
LIM1
, EN1, CHRGEN ................................ –0.3V to 6V
FB1, V
C1
..............–0.3V to Lesser of 6V or (V
IN1
+ 0.3V)
I
CLPROG
....................................................................3mA
I
CHRG
......................................................................50mA
I
PROG
........................................................................2mA
I
LDO3V3
...................................................................30mA
I
SW
, I
BAT
, I
VOUT
............................................................ 2A
I
VOUT1
, I
SWAB1
, I
SWCD1
.............................................2.5A
Operating Temperature Range (Note 2).... –40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range ................... –65°C to 125°C
(Note 1)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Path Switching Regulator
V
BUS
Input Supply Voltage 4.35 5.5 V
I
BUSLIM
Total Input Current 1x Mode, V
OUT
= BAT
5x Mode, V
OUT
= BAT
10x Mode, V
OUT
= BAT
Suspend Mode, V
OUT
= BAT
●
●
●
●
87
436
800
0.31
95
460
860
0.38
100
500
1000
0.50
mA
mA
mA
mA
I
BUSQ
V
BUS
Quiescent Current 1x Mode, I
OUT
= 0mA
5x Mode, I
OUT
= 0mA
10x Mode, I
OUT
= 0mA
Suspend Mode, I
OUT
= 0mA
7
15
15
0.044
mA
mA
mA
mA
h
CLPROG
(Note 4)
Ratio of Measured V
BUS
Current to
CLPROG Program Current
1x Mode
5x Mode
10x Mode
Suspend Mode
224
1133
2140
11.3
mA/mA
mA/mA
mA/mA
mA/mA
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
BUS
= 5V, V
BAT
= 3.8V, DV
CC
= 3.3V, R
CLPROG
= 3.01k, R
PROG
= 1k,
V
IN1
= V
OUT1
= 3.8V unless otherwise noted.
PIN CONFIGURATION
24 23 22 21 20 19
7 8 9
TOP VIEW
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
LDO3V3
CLPROG
NTC
FB1
V
C1
GND
GATE
GND
CHRG
PROG
I
LIM1
I
LIM0
EN1
CHRGEN
SW
V
BUS
V
OUT
BAT
SWAB1
MODE
V
IN1
V
OUT1
SWCD1
GND
25
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3566EUF#PBF LTC3566EUF#TRPBF 3566 24-Lead (4mm × 4mm) Plastic QFN –40°C to 85°C
LTC3566EUF-2#PBF LTC3566EUF-2#TRPBF 35662 24-Lead (4mm × 4mm) Plastic QFN –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
LTC3566/LTC3566-2
3
3566fb
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
OUT
(PowerPath)
V
OUT
Current Available Before
Loading BAT
1x Mode, BAT = 3.3V
5x Mode, BAT = 3.3V
10x Mode, BAT = 3.3V
Suspend Mode
135
672
1251
0.32
mA
mA
mA
mA
V
CLPROG
CLPROG Servo Voltage in Current
Limit
1x, 5x, 10x Modes
Suspend Mode
1.188
100
V
mV
V
UVLO_VBUS
V
BUS
Undervoltage Lockout Rising Threshold
Falling Threshold 3.95
4.30
4.00
4.35 V
V
V
UVLO_VBUS
-VBAT
V
BUS
to BAT Differential
Undervoltage Lockout
Rising Threshold
Falling Threshold
200
50
mV
mV
V
OUT
V
OUT
Voltage 1x, 5x, 10x Modes, 0V < BAT < 4.2V,
I
OUT
= 0mA, Battery Charger Off
3.4 BAT + 0.3 4.7 V
USB Suspend Mode, I
OUT
= 250μA 4.5 4.6 4.7 V
f
OSC
Switching Frequency
●
1.8 2.25 2.7 MHz
R
PMOS_PowerPath
PMOS On-Resistance 0.18 Ω
R
NMOS_PowerPath
NMOS On-Resistance 0.30 Ω
I
PEAK_PowerPath
Peak Switch Current Limit 1x, 5x Modes
10x Mode
2
3
A
A
Battery Charger
V
FLOAT
BAT Regulated Output Voltage
●
4.179
4.165
4.200
4.200
4.221
4.235
V
V
I
CHG
Constant Current Mode Charge
Current R
PROG
= 5k
980
185
1022
204
1065
223
mA
mA
I
BAT
Battery Drain Current V
BUS
> V
UVLO
, Battery Charger Off,
I
OUT
= 0μA
V
BUS
= 0V, I
OUT
= 0μA (Ideal Diode Mode)
LTC3566
LTC3566-2
2 3.5
27
32
5
38
44
μA
μA
μA
V
PROG
PROG Pin Servo Voltage 1.000 V
V
PROG_TRIKL
PROG Pin Servo Voltage in Trickle
Charge
V
BAT
< V
TRIKL
0.100 V
V
C/10
C/10 Threshold Voltage at PROG 100 mV
h
PROG
Ratio of I
BAT
to PROG Pin Current 1022 mA/mA
I
TRKL
Trickle Charge Current BAT < V
TRKL
100 mA
V
TRIKL
Trickle Charge Threshold Voltage BAT Rising 2.7 2.85 3.0 V
ΔV
TRKL
Trickle Charge Hysteresis Voltage 135 mV
V
RECHRG
Recharge Battery Threshold Voltage Threshold Voltage Relative to V
FLOAT
–75 –100 –125 mV
t
TERM
Safety Timer Termination Timer Starts When BAT = V
FLOAT
3.3 4 5 Hour
t
BADBAT
Bad Battery Termination Time BAT < V
TRKL
0.42 0.5 0.63 Hour
h
C/10
End of Charge Indication Current
Ratio
(Note 5) 0.088 0.1 0.112 mA/mA
V
CHRG
CHRG Pin Output Low Voltage
I
CHRG
= 5mA 65 100 mV
I
CHRG
CHRG Pin Leakage Current V
CHRG
= 5V 1 μA
ELECTRICAL CHARACTERISTICS
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
BUS
= 5V, V
BAT
= 3.8V, DV
CC
= 3.3V, R
CLPROG
= 3.01k, R
PROG
= 1k,
V
IN1
= V
OUT1
= 3.8V unless otherwise noted.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28

LTC3566EUF-2#TRPBF

Mfr. #:
Buy LTC3566EUF-2#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management High Efficiency USB Power Manager Plus 1A Buck-Boost Converter
Lifecycle:
New from this manufacturer.
Delivery:
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