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

LT8584IFE#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36
LT8584
1
8584fb
For more information www.linear.com/LT8584
Typical applicaTion
FeaTures DescripTion
2.5A Monolithic Active Cell
Balancer with Telemetry Interface
The LT
®
8584 is a monolithic flyback DC/DC converter de-
signed to actively
balance high voltage stacks of batteries.
The high efficiency of a switching regulator significantly
increases the achievable balancing current while reducing
heat generation. Active balancing also allows for capacity re
-
covery in stacks
of mismatched batteries, a feat unattainable
with passive balance systems. In a typical system, greater
than 99% of the total battery capacity can be recovered.
The LT8584 includes an integrated 6A, 50V power switch,
reducing the design complexity of the application circuit.
The part runs completely off of the cell which it is discharg
-
ing, removing the need for complicated biasing schemes
commonly required for external power switches. The enable
pin (D
IN
) of the part is designed to work seamlessly with
the LTC680x family of battery stack voltage monitoring
ICs. The LT8584 also provides system telemetry including
current and temperature monitoring when used with the
LTC680x family of parts. When the LT8584 is disabled, less
than 20nA of total quiescent current is typically consumed
from the battery.
L, LT , LT C , LT M , Linear Technology and the Linear logo are registered trademarks and Hot
Swap and isoSPI are trademarks of Linear Technology Corporation. All other trademarks are the
property
of their respective owners. Protected by U.S. Patents, including 6518733 and 6636021.
applicaTions
n
2.5A Typical Average Cell Discharge Current
n
Integrated 6A, 50V Power Switch
n
Integrates Seamlessly with LTC680x Family:
No Additional Software Required
n
Selectable Current and Temperature Monitors
n
Ultralow Quiescent Current in Shutdown
n
Engineered for ISO 26262 Compliant Systems
n
Isolated Balancing:
n
Can Return Charge to Top of Stack
n
Can Return Charge to Any Combination of Cells
in Stack
n
Can Return Charge to 12V Battery for Alternator
Replacement
n
Can Be Paralleled for Greater Discharge Capability
n
All Quiescent Current in Operation Taken from Local Cell
n
16-Lead TSSOP Package
n
Active Battery Stack Balancing
n
Electric and Hybrid Electric Vehicles
n
Fail-Safe Power Supplies
n
Energy Storage Systems
LT8584
LTC6804
BATTERY STACK
MONITOR
MEASURABLE CELL
PARAMETERS
2.5A AVERAGE
DISCHARGE
MODULE
+
MODULE
+
MODULE
–
V
+
V
–
/C0
BAT 12
+
MODULE
–
READ CELL PARAMETERS
ENABLE BALANCING
•
•
LT8584 TA01a
2.5A AVERAGE
DISCHARGE
MODULE
+
BAT 2
+
MODULE
–
•
•
2.5A AVERAGE
DISCHARGE
MODULE
+
C12
S12
LT8584
READ CELL PARAMETERS
ENABLE BALANCING
C2
S2
LT8584
READ CELL PARAMETERS
ENABLE BALANCING
C1
S1
BAT 1
+
MODULE
–
•
•
EXTRACTABLE CELL
PARAMETERS
• R
CABLE
+ R
CONNECTOR
• SWITCHING FAULTS
• UNDERVOLTAGE
• SERIAL FAULTS
• COULOMB COUNTING
• V
CELL
• I
DISCHARGE
• V
REF
• TEMPERATURE
12-Cell Battery Stack Module with Active Balancing
LT8584
2
8584fb
For more information www.linear.com/LT8584
pin conFiguraTionabsoluTe MaxiMuM raTings
D
IN
to GND Voltage ................................................. ±10V
V
IN
, V
CELL
, V
SNS,
MODE, OUT,
DCHRG Voltage ............................................ –0.3V to 9V
RTMR Voltage .................................................... (Note 2)
SW Voltage (Note 3) .................................. –0.4V to 50V
V
IN
– V
CELL
Voltage ............................................±200mV
V
IN
– V
SNS
Voltage .............................................±200mV
MODE – V
IN
Voltage ............................................. 200mV
V
SNS
, MODE Pin Current ........................................ ±1mA
V
CELL
, OUT Pin Current ........................................ ±10mA
SW Pin Negative Current ..........................................–2A
Operating Junction Temperature Range (Note 4)
LT8584E ................................................. –40°C to 125°C
LT8584I.................................................. –40°C to 125°C
LT8584H ................................................ –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ...................300°C
(Note 1)
FE PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
GND
GND
GND
GND
MODE
RTMR
D
IN
OUT
SW
SW
SW
SW
DCHRG
V
SNS
V
CELL
V
IN
17
GND
T
JMAX
= 150°C, θ
JA
= 38°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT8584EFE#PBF LT8584EFE#TRPBF 8584FE 16-Lead Plastic TSSOP –40°C to 125°C
LT8584IFE#PBF LT8584IFE#TRPBF 8584FE 16-Lead Plastic TSSOP –40°C to 125°C
LT8584HFE#PBF LT8584HFE#TRPBF 8584FE 16-Lead Plastic TSSOP –40°C to 150°C
Consult LT C Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/
LT8584
3
8584fb
For more information www.linear.com/LT8584
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 4.2V, D
IN
= GND unless otherwise noted. (Note 4)
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Recommended Voltage Range Switching
Nonswitching
l
l
2.5
2.45
5.3
5.3
V
V
IN
Quiescent Current Switching
Nonswitching
In Shutdown, D
IN
= OUT
In Shutdown, D
IN
= OUT
l
l
45
2.5
1
3
90
1
mA
mA
nA
µA
V
IN
UVLO
l
2.1 2.45 V
Switch DC Current Limit
l
6 6.3 6.8 A
Current Limit Blanking Time 450 ns
Switch V
CESAT
I
SW
= 4A 200 mV
Switch Leakage Current V
SW
= 4.2V
V
SW
= 4.2V
l
5 70
4
nA
µA
Switch Maximum On T
ime
l
30 50 70 µs
Switch Short Detection Timeout Note 5
l
0.5 0.85 1.2 µs
Switch Clamp Voltage I
SW
= 2mA
I
SW
= 6A
42 45
50
48 V
V
Switch Clamp Blanking Time Note 6 80 200 360 ns
DCM Comparator Trip Voltage V
SW
– V
VIN
l
40 95 150 mV
DCM Comparator Propagation Delay 200mV Overdrive
l
100 180 ns
DCM Blanking Time 230 ns
MODE Threshold 1.7 V
D
IN
Shutdown Threshold
High → Low, Referred to GND
l
1 1.2 1.4 V
D
IN
Shutdown Threshold Hysteresis 100 mV
D
IN
Data Threshold
High → Low, V
TH
= V
OUT
– V
DIN
, MODE = 0V
l
0.3 0.7 0.9 V
D
IN
Data Threshold Hysteresis V
TH
= V
OUT
– V
DIN
, MODE = 0V
l
20 80 160 mV
D
IN
Pin Current V
DIN
= 0V
V
DIN
= –1V
l
–6
–18
–3
–14
–1
–6
µA
µA
DCHRG Threshold MODE T
ied to V
IN
l
0.5 0.8 1.1 V
DCHRG Hysteresis MODE Tied to V
IN
100 mV
DCHRG Pull-down Current Pin V
oltage = 0.4V
l
220 300 µA
DCHRG Pull-up Current Pin Voltage = V
IN
– 0.4V
l
220 300 µA
RMTR Pin High Voltage R
RTMR
= 50kΩ 1.22 V
RMTR Pin Low Voltage R
RTMR
= 50kΩ 0 V
V
CELL
Switch R
DSON
55 Ω
V
SNS
Dynamic Input Range Gain Error ≤ 8%
l
–30 70 mV
V
SNS
Average Input Range Gain Error ≤ 3%
l
15 45 mV
V
SNS
Amplifier Input Referred Offset V
CELL
– V
SNS
= 40mV
l
–1.1 1.1 mV
V
SNS
Amplifier Gain Over V
SNS
Average Input Range
l
18.7 19 19.3 V/V
Handshake Voltage Error Measured ± with Respect to:
V
MODE1
= 0.2V
V
MODE2
= 0.4V
V
MODE3
= 0.6V
V
MODE4
= 0.8V
V
SW,ERR
= 1.2V
V
FAULT
= 1.4V
V
FAULT
= 1.4V
l
l
l
l
l
l
–13
–14
–18
–22
–31
–35
–28
13
14
18
22
31
35
28
mV
mV
mV
mV
mV
mV
mV
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36

LT8584IFE#PBF

Mfr. #:
Buy LT8584IFE#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management 2.5A Mono Active Cell Balancer w/ Teleme
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet