OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LTC4006EGN-2#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
1
LTC4006
4006fa
TYPICAL APPLICATIO
U
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
4A, High Efficiency,
Standalone Li-Ion
Battery Charger
■
Complete Charger Controller for 2-, 3- or 4-Cell
Lithium-Ion Batteries
■
High Conversion Efficiency: Up to 96%
■
Output Currents Exceeding 4A
■
±0.8% Accurate Preset Voltages: 8.4V, 12.6V, 16.8V
■
Built-In Charge Termination with Automatic Restart
■
AC Adapter Current Limiting Maximizes Charge Rate*
■
Automatic Conditioning of Deeply Discharged
Batteries
■
Thermistor Input for Temperature Qualified Charging
■
Wide Input Voltage Range: 6V to 28V
■
0.5V Dropout Voltage; Maximum Duty Cycle: 98%
■
Programmable Charge Current: ±4% Accuracy
■
Indicator Outputs for Charging, C/10 Current
Detection and AC Adapter Present
■
Charging Current Monitor Output
■
16-Pin Narrow SSOP Package
■
Notebook Computers
■
Portable Instruments
■
Battery-Backup Systems
■
Standalone Li-Ion Chargers
4A Li-Ion Battery Charger
The LTC
®
4006 is a complete constant-current/constant-
voltage charger controller for 2-, 3- or 4-cell lithium bat-
teries in a small package using few external components.
The PWM controller is a synchronous, quasi-constant fre-
quency, constant off-time architecture that will not gener-
ate audible noise even when using ceramic capacitors.
The LTC4006 is available in 8.4V, 12.6V and 16.8V versions
with ±0.8% voltage accuracy. Charging current is program-
mable with a single sense resistor to ±4% typical accuracy.
Charging current can be monitored as a representative
voltage at the I
MON
pin. A timer, programmed by an external
resistor, sets the total charge time or is reset to 25% of total
charge time after C/10 charging current is reached. Charg-
ing automatically resumes when the cell voltage falls below
3.9V/cell.
Fully discharged cells are automatically trickle charged at
10% of the programmed current until the cell voltage ex-
ceeds 2.5V/cell. Charging terminates if the low-battery
condition persists for more than 25% of the total charge
time.
The LTC4006 includes a thermistor sensor input that
suspends charging if an unsafe temperature condition is
detected and automatically resumes charging when the
battery temperature returns to within safe limits.
CHG
ACP
0.12µF
THERMISTOR
10k
NTC
309k
TIMING
RESISTOR
(~2 HOURS)
0.0047µF
0.47µF
32.4k
CHARGING
CURRENT MONITOR
100k
V
LOGIC
DCIN
0V TO 28V
3A
6k
INPUT SWITCH
0.1µF
15nF
20µF
10µH
5k
0.025Ω
0.033Ω
20µF
BATTERY
TO SYSTEM LOAD
4006 TA01
DCIN
CHG
ACP/SHDN
I
MON
NTC
R
T
I
TH
GND
INFET
CLP
CLN
TGATE
BGATE
PGND
CSP
BAT
LTC4006
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents
including 5723970.
2
LTC4006
4006fa
Voltage from DCIN, CLP, CLN, TGATE, INFET,
ACP/SHDN, CHG to GND ....................... +32V to –0.3V
Voltage from CLP to CLN..................................... ±0.3V
CSP, BAT to GND................................... +28V to –0.3V
R
T
to GND ................................................. +7V to –0.3V
NTC ........................................................ +10V to –0.3V
Operating Ambient Temperature Range
(Note 4) ............................................. – 40°C to 85°C
Operating Junction Temperature ......... – 40°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART
NUMBER
LTC4006EGN-2
LTC4006EGN-4
LTC4006EGN-6
T
JMAX
= 125°C, θ
JA
= 110°C/W
The
● denotes specifications which apply over the full operating
temperature range (Note 4), otherwise specifications are at T
A
= 25°C. V
DCIN
= 20V, V
BAT
= 12V unless otherwise noted.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
GN PART MARKING
GN PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
DCIN
CHG
ACP/SHDN
R
T
GND
NTC
I
TH
I
MON
INFET
BGATE
PGND
TGATE
CLN
CLP
BAT
CSP
40062
40064
40066
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
DCIN Operating Range 628V
I
DCIN
DCIN Operating Current Sum of Current from CLP, CLN, DCIN 3 5 mA
V
TOL
Voltage Accuracy (Note 2)
LTC4006-6 8.333 8.4 8.467 V
LTC4006-6
● 8.316 8.4 8.484 V
LTC4006-2 12.499 12.6 12.700 V
LTC4006-2
● 12.474 12.6 12.726 V
LTC4006-4 16.665 16.8 16.935 V
LTC4006-4
● 16.632 16.8 16.968 V
I
TOL
Current Accuracy (Note 3) V
CSP
– V
BAT
Target = 100mV – 4 4 %
V
BAT
= 11.5V (LTC4006-2) ● –5 5 %
V
BAT
= 7.6V (LTC4006-6)
V
BAT
= 12V (LTC4006-4)
V
BAT
< 6V, V
CSP
– V
BAT
Target = 10mV –60 60 %
6V ≤ V
BAT
≤ V
LOBAT
,–4040%
V
CSP
– V
BAT
Target = 10mV
T
TOL
Termination Timer Accuracy R
RT
= 270k ● –15 15 %
Shutdown
Battery Leakage Current DCIN = 0V 20 35 µA
DCIN = 0V
● 25 45 µA
DCIN = 20V, V
SHDN
= 0V, V
BAT
= 12V ● –10 0 10 µA
UVLO Undervoltage Lockout Threshold DCIN Rising, V
BAT
= 0V ● 4.2 4.7 5.5 V
Shutdown Threshold at ACP/SHDN ● 1 2.5 V
DCIN Current in Shutdown V
SHDN
= 0V, Sum of Current from CLP, 2 3 mA
CLN, DCIN
Current Sense Amplifier, CA1
Input Bias Current Into BAT Pin 11.67 µA
CMSL CA1/I
1
Input Common Mode Low ● 0V
CMSH CA1/I
1
Input Common Mode High ● V
CLN
– 0.2 V
(Note 1)
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
3
LTC4006
4006fa
The ● denotes specifications which apply over the full operating
temperature range (Note 4), otherwise specifications are at T
A
= 25°C. V
DCIN
= 20V, V
BAT
= 12V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Current Comparators I
CMP
and I
REV
I
TMAX
Maximum Current Sense Threshold (V
CSP
– V
BAT
)V
ITH
= 2.5V ● 140 165 200 mV
I
TREV
Reverse Current Threshold (V
CSP
– V
BAT
)–30mV
Current Sense Amplifier, CA2
Transconductance 1 mmho
Source Current Measured at I
TH
, V
ITH
= 1.4V – 40 µA
Sink Current Measured at I
TH
, V
ITH
= 1.4V 40 µA
Current Limit Amplifier
Transconductance 1.5 mmho
V
CLP
Current Limit Threshold ● 93 100 107 mV
I
CLP
CLP Input Bias Current 100 nA
Voltage Error Amplifier, EA
Transconductance 1 mmho
Sink Current Measured at I
TH
, V
ITH
= 1.4V 36 µA
OVSD Overvoltage Shutdown Threshold as a Percent ● 102 107 110 %
of Programmed Charger Voltage
Input P-Channel FET Driver (INFET)
DCIN Detection Threshold (V
DCIN
– V
CLN
) DCIN Voltage Ramping Up ● 0 0.17 0.25 V
from V
CLN
– 0.1V
Forward Regulation Voltage (V
DCIN
– V
CLN
) ● 25 50 mV
Reverse Voltage Turn-Off Voltage (V
DCIN
– V
CLN
) DCIN Voltage Ramping Down ● –60 –25 mV
INFET “On” Clamping Voltage (V
DCIN
– V
INFET
)I
INFET
= 1µA ● 5 5.8 6.5 V
INFET “Off” Clamping Voltage (V
DCIN
– V
INFET
)I
INFET
= –25µA 0.25 V
Thermistor
NTCVR Reference Voltage During Sample Time 4.5 V
High Threshold V
NTC
Rising ● NTCVR NTCVR NTCVR V
• 0.48 • 0.5 • 0.52
Low Threshold V
NTC
Falling ● NTCVR NTCVR NTCVR V
• 0.115 • 0.125 • 0.135
Thermistor Disable Current V
NTC
≤ 10V 10 µA
Indicator Outputs (ACP/SHDN, CHG)
C10TOL C/10 Indicator Accuracy Voltage Falling at PROG ● 0.375 0.400 0.425 V
LBTOL LOBAT Threshold Accuracy LTC4006-6 ● 4.70 4.93 5.14 V
LTC4006-2
● 7.27 7.5 7.71 V
LTC4006-4
● 9.70 10 10.28 V
RESTART Threshold Accuracy LTC4006-6 ● 7.5 7.8 7.96 V
LTC4006-2
● 11.35 11.7 11.94 V
LTC4006-4
● 15.15 15.6 15.92 V
V
OL
Low Logic Level of ACP/SHDN, CHG I
OL
= 100µA ● 0.5 V
V
OH
High Logic Level of ACP/SHDN I
OH
= –1µA ● 2.7 V
I
PO
Pull-Up Current on ACP/SHDN V = 0V –10 µA
IC10 C/10 Indicator Sink Current from CHG V
OH
= 3V ● 15 25 38 µA
I
OFF
Off State Leakage Current of CHG V
OH
= 3V –1 1 µA
Timer Defeat Threshold at CHG 1 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC4006EGN-2#PBF

Mfr. #:
Buy LTC4006EGN-2#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management 4A, Simplified Li-Ion Charger for 3-Cell
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet