EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
MSE PACKAGE
12-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 43°C/W,
θ
JC
= 3°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3650EDD-4.1#PBF
LT3650IDD-4.1#PBF
LT3650EDD-4.2#PBF
LT3650IDD-4.2#PBF
LT3650EMSE-4.1#PBF
LT3650IMSE-4.1#PBF
LT3650EMSE-4.2#PBF
LT3650IMSE-4.2#PBF
TAPE AND REEL
LT3650EDD-4.1#TRPBF
LT3650IDD-4.1#TRPBF
LT3650EDD-4.2#TRPBF
LT3650IDD-4.2#TRPBF
LT3650EMSE-4.1#TRPBF
LT3650IMSE-4.1#TRPBF
LT3650EMSE-4.2#TRPBF
LT3650IMSE-4.2#TRPBF
PART MARKING*
LFGQ
LFGQ
LDDS
LDDS
365041
365041
365042
365042
PACKAGE DESCRIPTION
12-Lead Plastic DFN (3mm
×
3mm)
12-Lead Plastic DFN (3mm
×
3mm)
12-Lead Plastic DFN (3mm
×
3mm)
12-Lead Plastic DFN (3mm
×
3mm)
12-Lead Plastic MSOP
12-Lead Plastic MSOP
12-Lead Plastic MSOP
12-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°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/
36504142fb
2
LT3650-4.1/LT3650-4.2
ELECTRICAL CHARACTERISTICS
SYMBOL
LT3650
V
IN
V
IN(OVLO)
V
IN(UVLO)
V
BAT(FLT)
V
IN
Operating Range
V
IN
Start Voltage
OVLO Threshold
OVLO Hysteresis
UVLO Threshold
UVLO Hysteresis
Battery Float Voltage
(Note 3)
V
IN
Rising
V
IN
Rising
LT3650-4.1
LT3650-4.2
ΔV
RECHRG
V
BAT(PRE)
V
BAT(PREHYST)
I
VIN
Recharge Battery Threshold
Battery Precondition Threshold Voltage
Battery Precondition Threshold
Hysteresis
Operating Input Supply Current
CC/CV Mode, I
SW
= 0
Standby Mode
Shutdown (SHDN = 0)
Switch-On, I
SW
= 0
2.5V < V
(BOOST – SW)
< 4.5V
I
SW
= 2A
V
IN
– V
SW
, I
SW
= 2A
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
.
temperature range, otherwise specifications are at V
IN
= 20V, BOOST-SW = 4V,
SHDN
= 2V, SENSE = BAT = V
BAT(FLT)
, C
TIMER
= 0.68μF
PARAMETER
CONDITIONS
MIN
4.75
32
35
1
4.6
0.2
4.08
4.06
4.18
4.16
4.1
4.2
–100
2.9
90
2.5
85
15
20
30
350
2.5
15
l
l
l
l
l
TYP
MAX
32
7.5
40
4.75
4.12
4.14
4.22
4.24
UNITS
V
V
V
V
V
V
V
V
V
V
mV
V
mV
l
l
Threshold Voltage Relative to V
BAT(FLT)
V
BAT
Rising
3.5
mA
μA
μA
mA
mA/A
mV
A
mV
I
BOOST
I
BOOST
/I
SW
V
SW(ON)
I
SW(MAX)
V
SENSE(PRE)
V
CLP(DC)
I
CLP
V
SENSE(DC)
V
SENSE(C/10)
I
BAT
I
SENSE
I
REVERSE
V
NTC(H)
V
NTC(L)
V
NTC(HYST)
R
NTC(DIS)
I
NTC
I
RNG/SS
V
RNG/SS
/ V
SENSE
V
SHDN
V
SHDN(HYST)
I
SHDN
BOOST Supply Current
BOOST Switch Drive
Switch-On Voltage Drop
Switch Current Limit
Precondition Current Sense Voltage
CLP Threshold Voltage
CLP Input Bias Current
Maximum Current Sense Voltage
C/10 Trigger Sense Voltage
BAT Input Bias Current
SENSE Input Bias Current
Charger Reverse Current:
I
BAT
+ I
SENSE
+ I
SW
NTC Range Limit (High)
NTC Range Limit (Low)
NTC Threshold Hysteresis
NTC Disable Impedance
NTC Bias Current
I
RNG/SS
Bias Current
Current Limit Programming:
V
RNG/SS
/V
SENSE(MAX)
Shutdown Threshold
Shutdown Hysteresis
SHDN
Input Bias Current
V
SENSE
– V
BAT
V
BAT
= 2.5
V
CLP
– V
IN
; V
SENSE
– V
BAT
= 50mV
V
SENSE
– V
BAT
; V
BAT
= 3.5V, V
RNG/SS
= 1.2V
Charging Terminated
Charging Terminated
V
IN
= 0V; BAT = SENSE = SW = V
BAT(FLT)
V
NTC
Rising
V
NTC
Falling
% of Threshold
Minimum External Impedance to GND
V
NTC
= 0.8V
V
RNG/SS
= 0.5
Rising
l
l
l
l
l
l
l
37.5
95
7.5
50
200
100
10
0.1
0.1
1
62.5
105
12.5
1
1
mV
nA
mV
mV
μA
μA
μA
1.25
0.27
250
47.5
45
8.5
1.17
1.36
0.29
20
500
50
50
10
1.20
120
–10
1.45
0.315
V
V
%
kΩ
52.5
55
11.5
1.23
μA
μA
V/V
V
mV
nA
36504142fb
3
LT3650-4.1/LT3650-4.2
ELECTRICAL CHARACTERISTICS
SYMBOL
V
CHRG
, V
FAULT
I
TIMER
V
TIMER(DIS)
t
TIMER
PARAMETER
Status Low Voltage
Charge/Discharge Current
Timer Disable Threshold
Full Charge Cycle Timeout
Precondition Timeout
Timer Accuracy
f
O
DC
Operating Frequency
Duty Cycle Range
Continuous Operation
l
l
l
l
The
l
denotes the specifications which apply over the full operating
.
temperature range, otherwise specifications are at V
IN
= 20V, BOOST-SW = 4V,
SHDN
= 2V, SENSE = BAT = V
BAT(FLT)
, C
TIMER
= 0.68μF
CONDITIONS
10mA Load
l
MIN
TYP
25
MAX
0.4
UNITS
V
μA
V
hr
min
0.1
0.25
3
22.5
–10
0.9
15
1
10
1.1
90
%
MHz
%
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LT3650E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3650I specifications are
guaranteed over the full –40°C to 85°C temperature range. High junction
temperatures degrade operating lifetimes.
Note 3:
V
IN
voltages below the start threshold are only supported if
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PCB Design
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