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LTC4009IUF-2#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
1
4009fd
LTC4009
LTC4009-1/LTC4009-2
Typical applicaTion
FeaTures
applicaTions
DescripTion
High Efficiency,
Multi-Chemistry
Battery Charger
The LTC
®
4009 is a constant-current/constant-voltage
battery charger controller. It uses a synchronous quasi-
constant frequency PWM control architecture that will
not generate audible noise with ceramic bulk capacitors.
Charge current is set by the combination of external
sense, input and programming resistors. With no built-in
termination, the LTC4009 family charges a wide range of
batteries under external control.
The LTC4009 features a fully adjustable output voltage, while
the LTC4009-1 and LTC4009-2 can be pin-programmed for
lithium-ion/polymer battery packs of 1-, 2-, 3- or 4-series
cells. The LTC4009-1 provides output voltage of 4.1V/cell,
and the LTC4009-2 is a 4.2V/cell version.
The device includes AC adapter input current limiting which
maximizes the charge rate for a fixed input power level. An
external sense resistor programs the input current limit, and
the ICL status pin indicates when the battery charge current
is being reduced as a result of AC adapter current limiting.
The CHRG status pin is active during all charging modes,
including special indication for low charge current.
n
General Purpose Battery Charger Controller
n
Efficient 550kHz Synchronous Buck PWM Topology
n
±0.5% Output Float Voltage Accuracy
n
Programmable Charge Current: 4% Accuracy
n
Programmable AC Adapter Current Limit:
3% Accuracy
n
No Audible Noise with Ceramic Capacitors
n
Wide Input Voltage Range: 6V to 28V
n
Wide Output Voltage Range: 2V to 28V
n
Indicator Outputs for AC Adapter Present, Charging,
C/10 Current Detection and Input Current Limiting
n
Analog Charge Current Monitor
n
Micropower Shutdown
n
Thermally Enhanced 20-Pin 4mm × 4mm × 0.75mm
QFN Package
n
Notebook Computers
n
Portable Instruments
n
Battery Backup Systems
Efficiency at DCIN = 20V
CLP
FROM
ADAPTER
13V TO 20V
CHARGE
CURRENT
MONITOR
0.1µF
5.1k
33mΩ
3.01k
0.1µF
6.8µH
33mΩ
DCIN
0.1µF
2µF
0.1µF
14.3k
1.5k
6.04k
301k
32.8k
26.7k
LTC4009
DCDIV
CHRG
ACP
ICL
SHDN
ITH
PROG
CLN
BOOST
TGATE
SW
INTV
DD
BGATE
TO/FROM
MCU
GND
CSP
CSN
BAT
FBDIV
V
FB
20µF
POWER TO
SYSTEM
4.7nF
20µF
4009 TA01a
12.3V
Li-Ion
BATTERY
3.01k
+
CHARGE CURRENT (A)
0
70
EFFICIENCY (%)
POWER LOSS (mW)
75
80
85
90
100
100
1000
10000
0.5
1.0 1.5 2.0
4009 TA01b
2.5 3.0
95
EFFICIENCY
POWER LOSS
V
OUT
= 12.3V
R
SENSE
= 33mΩ
R
IN
= 3.01k
R
PROG
= 26.7k
D
IN
= SSB44
L = IHLP-2525CZ 6.8µH
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners. Protected by U.S. Patents including 5723970.
LTC4009
LTC4009-1/LTC4009-2
2
4009fd
pin conFiguraTion
absoluTe MaxiMuM raTings
DCIN, CLP, CLN or SW to GND ................... –0.3V to 30V
CLP to CLN ............................................................±0.3V
CSP, CSN or BAT to GND ........................... –0.3V to 28V
CSP to CSN ............................................................±0.3V
BOOST to GND ........................................... –0.3V to 36V
BOOST to SW............................................... –0.3V to 7V
DCDIV, SHDN , FVS0, FVS1 or V
FB
to GND ... –0.3V to 7V
(Note 1)
ACP, CHRG or ICL to GND .......................... –0.3V to 30V
Operating Temperature Range
(Note 2) ............................................. –40°C to 125°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range .................. –65°C to 150°C
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4009CUF#PBF LTC4009CUF#TRPBF 4009
20-Lead (4mm × 4mm) Plastic QFN
0°C to 85°C
LTC4009CUF-1#PBF LTC4009CUF-1#TRPBF 40091
20-Lead (4mm × 4mm) Plastic QFN
0°C to 85°C
LTC4009CUF-2#PBF LTC4009CUF-2#TRPBF 40092
20-Lead (4mm × 4mm) Plastic QFN
0°C to 85°C
LTC4009IUF#PBF LTC4009IUF#TRPBF 4009
20-Lead (4mm × 4mm) Plastic QFN
–40°C to 125°C
LTC4009IUF-1#PBF LTC4009IUF-1#TRPBF 40091
20-Lead (4mm × 4mm) Plastic QFN
–40°C to 125°C
LTC4009IUF-2#PBF LTC4009IUF-2#TRPBF 40092
20-Lead (4mm × 4mm) Plastic QFN
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
LTC4009 LTC4009-1
LTC4009-2
20 19 18 17 16
6 7 8
TOP VIEW
21
UF PACKAGE
20-LEAD (4mm s 4mm) PLASTIC QFN
9 10
5
4
3
2
1
11
12
13
14
15
CLN
CLP
DCIN
ICL
DCDIV
CSP
CSN
PROG
ITH
BAT
BOOST
TGATE
SW
INTV
DD
BGATE
SHDN
ACP
CHRG
FBDIV
V
FB
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
20 19 18 17 16
6 7 8
TOP VIEW
21
UF PACKAGE
20-LEAD (4mm s 4mm) PLASTIC QFN
9 10
5
4
3
2
1
11
12
13
14
15
CLN
CLP
DCIN
ICL
DCDIV
CSP
CSN
PROG
ITH
BAT
BOOST
TGATE
SW
INTV
DD
BGATE
SHDN
ACP
CHRG
FVS0
FVS1
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
3
4009fd
LTC4009
LTC4009-1/LTC4009-2
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. DCIN = 20V, BAT = 12V, GND = 0V unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Charge Voltage Regulation
V
TOL
V
BAT
Accuracy (See Test Circuits) LTC4009
C-Grade
I-Grade
l
l
–0.5
–0.8
–1.0
0.5
0.8
1.0
%
%
%
LTC4009-1/LTC4009-2
C-Grade
FVS1 = 0V, FVS0 = 0V, I-Grade
FVS1 = 0V, FVS1 = 5V, I-Grade
FVS1 = 5V, FVS0 = 0V, I-Grade
FVS1 = 5V, FVS1 = 5V, I-Grade
l
l
l
l
l
–0.6
–0.8
–1.1
–1.15
–1.25
–1.35
0.6
0.8
1.1
1.15
1.25
1.35
%
%
%
%
%
%
I
VFB
V
FB
Input Bias Current V
FB
= 1.2V ±20 nA
R
ON
FBDIV On-Resistance I
LOAD
= 100µA
l
85 190
Ω
I
LEAK-FBDIV
FBDIV Output Leakage Current SHDN = 0V, FBDIV = 0V
l
–1 0 1 µA
V
BOV
V
FB
Overvoltage Threshold LTC4009
l
1.235 1.281 1.32 V
BAT Overvoltage Threshold LTC4009-1/LTC4009-2, Relative to
Selected Output Voltage
l
103 106 109 %
Charge Current Regulation
I
TOL
Charge Current Accuracy with R
IN
= 3.01k,
6V < BAT < 18V (LTC4009),
6V < BAT < 15V (LTC4009-1, LTC4009-2)
R
PROG
= 26.7k
C-Grade
I-Grade
l
l
–4
–5
–9.5
4
5
9.5
%
%
%
V
SENSE
= 0mV, PROG = 1.2V –12.75 –11.67 –10.95 µA
A
I
Current Sense Amplifier Gain (PROG ∆I) with
R
IN
= 3.01k, 6V < BAT < 18V (LTC4009),
6V < BAT < 15V (LTC4009-1, LTC4009-2)
V
SENSE
Step from 0mV to 5mV,
PROG = 1.2V
–1.78 –1.66 –1.54 µA
V
CS-MAX
Maximum Peak Current Sense Threshold Voltage
per Cycle (R
IN
= 3.01k)
ITH = 2V, C-Grade
ITH = 2V, I-Grade
ITH = 5V
l
l
l
140
125
195
325
250
265
430
mV
mV
mV
V
C10
C/10 Indicator Threshold Voltage PROG Falling 340 400 460 mV
V
REV
Reverse Current Threshold Voltage PROG Falling 180 253 295 mV
Input Current Regulation
V
CL
Current Limit Threshold CLP – CLN
C-Grade
I-Grade
l
l
97
96
92
100
100
103
104
108
mV
mV
mV
I
CLN
CLN Input Bias Current CLN = CLP ±100 nA
V
ICL
ICL Indicator Threshold (CLP – CLN) – V
CL
–8 –5 –2 mV
DCIN, CLP Supplies
OVR Operating Voltage Range DCIN and CLP 6 28 V
I
DCO
DCIN Operating Current No Gate Loads 1.5 2 mA
I
CLPO
CLP Operating Current CLP = 20V, No Gate Loads 0.5 0.8 mA
V
CBT
CLP Boost Threshold Voltage CLP – DCIN, CLP Rising
l
10 25 60 mV
V
CNT
CLP Normal Threshold Voltage (Note 5) DCIN – CLP, CLP Falling
l
10 25 60 mV
V
OVP
DCDIV Overvoltage Protection Threshold DCDIV Rising 1.75 1.825 1.9 V
V
OVP(HYST)
DCDIV OVP Threshold Hysteresis 110 mV
Shutdown
V
ACP
DCDIV AC Present Threshold Voltage DCDIV Rising
l
1.13 1.2 1.27 V
V
ACP(HYST)
DCDIV ACP Threshold Hysteresis Voltage 50 mV
I
DCDIV
DCDIV Input Current DCDIV = 1.2V –1 0 1 µA
V
IL
SHDN Input Voltage Low
l
300 mV
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LTC4009IUF-2#TRPBF

Mfr. #:
Buy LTC4009IUF-2#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management High Efficiency, Multi-Chemistry QFN Battery Charger
Lifecycle:
New from this manufacturer.
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