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Linear Technology Electronic Components Datasheet

LTC4000-1 Datasheet

High Voltage High Current Controller

No Preview Available !

LTC4000-1
High Voltage High Current
Controller for Battery Charging with
Maximum Power Point Control
Features
Description
n Maximum Power Control: Solar Panel Input
Compatible
n Complete High Performance Battery Charger When
Paired with a DC/DC Converter
n Wide Input and Output Voltage Range: 3V to 60V
n Input Ideal Diode for Low Loss Reverse Blocking
and Load Sharing
n Output Ideal Diode for Low Loss PowerPath™ and
Load Sharing with the Battery
n Programmable Charge Current: ±1% Accuracy
n ±0.25% Accurate Programmable Float Voltage
n Programmable C/X or Timer Based Charge
Termination
n NTC Input for Temperature Qualified Charging
n 28-Lead 4mm × 5mm QFN or SSOP Packages
Applications
n Solar Powered Battery Charger Systems
n Battery Charger with High Impedance Input Source,
e.g., Fuel Cell or Wind Turbine
n Battery Equipped Industrial or Portable Military
Equipments
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
The LTC®4000-1 is a high voltage, high performance
controller that converts many externally compensated
DC/DC power supplies into full-featured battery chargers
with maximum power point control. In contrast to the
LTC4000, the LTC4000-1 has an input voltage regulation
loop instead of the input current regulation loop.
Features of the LTC4000-1’s battery charger include:
accurate (±0.25%) programmable float voltage, select-
able timer or current termination, temperature qualified
charging using an NTC thermistor, automatic recharge,
C/10 trickle charge for deeply discharged cells, bad battery
detection and status indicator outputs. The battery charger
also includes precision current sensing that allows lower
sense voltages for high current applications.
The LTC4000-1 supports intelligent PowerPath control. An
external PFET provides low loss reverse current protec-
tion. Another external PFET provides low loss charging
or discharging of the battery. This second PFET also
facilitates an instant-on feature that provides immediate
downstream system power even when connected to a
heavily discharged or shorted battery.
The LTC4000-1 is available in a low profile 28-lead
4mm × 5mm QFN and SSOP packages.
Typical Application
10.8V at 10A Charger for Three LiFePO4 Cells with a Solar Panel Input
SOLAR PANEL INPUT
<60V OPEN
CIRCUIT VOLTAGE
17.6V PEAK
POWER VOLTAGE
5mΩ
332k
20k
LT3845A
IN
OUT
VC
100µF
Si7135DP
CLN
IN
1µF
IFB
3V
14.7k
47nF
ITH
CC
IID IGATE CSP
CSN
BGATE
BAT
OFB
LTC4000-1
FBG
BFB
NTC
VOUT
12V, 15A
1.15M 5mΩ
Si7135DP
127k
133k
1.13M
VBAT
10.8V FLOAT
10A MAX CHARGE
CURRENT
IIMON TMR
CL
CX
GND BIAS
10k
10k
10nF
24.9k 22.1k
0.1µF
1µF
3-CELL LiFePO4
BATTERY PACK
40001 TA01a
For more information www.linear.com/LTC4001-1
Solar Panel Input Regulation,
Achieves Max Power Point
to Greater than 98%
20
TA = 25°C
18
16
14
98% TO 95% PEAK POWER
12
100% TO 98% PEAK POWER
10
1
2 3 4 5 6 7 8 9 10
CHARGER OUTPUT CURRENT: IRCS (A)
40001 TA01b
40001fa
1


Linear Technology Electronic Components Datasheet

LTC4000-1 Datasheet

High Voltage High Current Controller

No Preview Available !

LTC4000-1
Absolute Maximum Ratings
(Note 1)
IN, CLN, IID, CSP, CSN, BAT........................ –0.3V to 62V
IN-CLN, CSP-CSN.............................................–1V to 1V
OFB, BFB, FBG............................................ –0.3V to 62V
FBG.............................................................–1mA to 2mA
IGATE............Max (VIID, VCSP) – 10V to Max (VIID, VCSP)
BGATE........Max (VBAT, VCSN) – 10V to Max (VBAT, VCSN)
ENC, CX, NTC, VM....................................–0.3V to VBIAS
IFB, CL, TMR, IIMON, CC..........................–0.3V to VBIAS
BIAS..............................................–0.3V to Min (6V, VIN)
IBMON...................................–0.3V to Min (VBIAS, VCSP)
ITH................................................................ –0.3V to 6V
CHRG, FLT, RST........................................... –0.3V to 62V
CHRG, FLT, RST...........................................–1mA to 2mA
Operating Junction Temperature Range
(Note 2).................................................................. 125°C
Lead Temperature (Soldering, 10 sec)
SSOP Package................................................... 300°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
TOP VIEW
28 27 26 25 24 23
VM 1
22 IGATE
RST 2
21 OFB
IIMON 3
20 CSP
IFB 4
29
19 CSN
ENC 5
GND
18 BGATE
IBMON 6
17 BAT
CX 7
16 BFB
CL 8
15 FBG
9 10 11 12 13 14
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
TJMAX = 125°C, θJA = 43°C/W, θJC = 4°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ENC 1
IBMON 2
CX 3
CL 4
TMR 5
GND 6
FLT 7
CHRG 8
BIAS 9
NTC 10
FBG 11
BFB 12
BAT 13
BGATE 14
TOP VIEW
28 IFB
27 IIMON
26 RST
25 VM
24 GND
23 IN
22 CLN
21 CC
20 ITH
19 IID
18 IGATE
17 OFB
16 CSP
15 CSN
GN PACKAGE
28-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 80°C/W, θJC = 25°C/W
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4000EUFD-1#PBF
LTC4000EUFD-1#TRPBF 40001
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LTC4000IUFD-1#PBF
LTC4000IUFD-1#TRPBF 40001
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LTC4000EGN-1#PBF
LTC4000EGN-1#TRPBF LTC4000GN-1
28-Lead Plastic SSOP
–40°C to 125°C
LTC4000IGN-1#PBF
LTC4000IGN-1#TRPBF LTC4000GN-1
28-Lead Plastic SSOP
–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/
40001fa
2
For more information www.linear.com/LTC4001-1


Part Number LTC4000-1
Description High Voltage High Current Controller
Maker Linear
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