(Note 2) ............................................. –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
V
IN
V
IN_REG
SHDN
CHRG
FAULT
TIMER
1
2
3
4
5
6
13
12 SW
11 BOOST
10 SENSE
9 BAT
8 NTC
7 V
FB
V
IN
V
IN_REG
SHDN
CHRG
FAULT
TIMER
1
2
3
4
5
6
12
11
10
9
8
7
SW
BOOST
SENSE
BAT
NTC
V
FB
13
DD PACKAGE
12-LEAD (3mm
×
3mm) PLASTIC DFN
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
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
LT3652EDD#PBF
LT3652IDD#PBF
LT3652EMSE#PBF
LT3652IMSE#PBF
TAPE AND REEL
LT3652EDD#TRPBF
LT3652IDD#TRPBF
LT3652EMSE#TRPBF
LT3652IMSE#TRPBF
PART MARKING*
LFHT
LFHT
3652
3652
PACKAGE DESCRIPTION
12-Lead Plastic DFN 3mm
×
3mm
12-Lead Plastic DFN 3mm
×
3mm
12-Lead Plastic MSOP
12-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–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/
3652fb
2
LT3652
ELECTRICAL CHARACTERISTICS
SYMBOL
V
IN
V
IN(OVLO)
V
IN(UVLO)
V
FB(FLT)
ΔV
RECHARGE
V
FB(PRE)
V
FB(PREHYST)
V
IN_REG(TH)
I
IN_REG
I
VIN
PARAMETER
V
IN
Operating Range
V
IN
Start Voltage
OVLO Threshold
OVLO Hysteresis
UVLO Threshold
UVLO Hysteresis
Float Voltage Reference
Recharge Reference Threshold
Reference Precondition Threshold
Reference Precondition Threshold
Hysteresis
Input Regulation Reference
Operating Input Supply Current
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 20V, Boost – SW = 4V, SHDN = 2V, V
FB
= 3.3V, C
TIMER
= 0.68μF.
CONDITIONS
V
BAT
= 4.2 (Notes 3, 4)
V
BAT
= 4.2 (Note 4)
V
IN
Rising
V
IN
Rising
(Note 6)
Voltage Relative to V
FB(FLT)
(Note 6)
V
FB
Rising (Note 6)
Voltage Relative to V
FB(PRE)
(Note 6)
V
FB
= 3V; V
SENSE
– V
BAT
= 50mV
CC/CV Mode, I
SW
= 0
Standby Mode
Shutdown (SHDN = 0)
Switch On, I
SW
= 0,
2.5 < V
(BOOST – SW)
< 8.5
I
SW
= 2A
V
IN
– V
SW
, I
SW
= 2A
l
l
l
l
l
l
l
l
MIN
4.95
7.5
32
TYP
MAX
32
UNITS
V
V
V
V
V
V
V
V
mV
V
mV
35
1
4.6
0.2
40
4.95
3.318
3.34
3.282
3.26
3.3
82.5
2.3
70
2.65
2.7
35
2.5
85
15
20
30
350
2.75
100
3.5
V
nA
mA
μA
μA
mA
mA/A
mV
A
mV
Input Regulation Reference Bias Current V
IN_REG
= V
IN_REG(TH)
I
BOOST
I
BOOST/
I
SW
V
SW(ON)
I
SW(MAX)
V
SENSE(PRE)
V
SENSE(DC)
V
SENSE(C/10)
I
BAT
I
SENSE
I
REVERSE
I
VFB
I
VFB
V
NTC(H)
V
NTC(L)
V
NTC(HYST)
R
NTC(DIS)
I
NTC
V
SHDN
V
SHDN(HYST)
I
SHDN
V
CHRG
, V
FAULT
I
TIMER
V
TIMER(DIS)
BOOST Supply Current
BOOST Switch Drive
Switch-On Voltage Drop
Switch Current Limit
Precondition Sense Voltage
Maximum Sense Voltage
C/10 Trigger Sense Voltage
BAT Input Bias Current
SENSE Input Bias Current
Charger Reverse Current
I
BAT
+ I
SENSE
+ I
SW
V
FB
Input Bias Current
V
FB
Input Bias Current
NTC Range Limit (High)
NTC Range Limit (Low)
NTC Threshold Hysteresis
NTC Disable Impedance
NTC Bias Current
Shutdown Threshold
Shutdown Hysteresis
SHDN Input Bias Current
Status Low Voltage
Charge/Discharge Current
Timer Disable Threshold
2.5
95
7.5
3
15
100
10
0.1
0.1
1
65
110
105
12.5
1
1
V
SENSE
– V
BAT
; V
FB
= 2V
V
SENSE
– V
BAT
; V
FB
= 3V (Note 7)
V
SENSE
– V
BAT
, Falling
Charging Terminated
Charging Terminated
V
IN
= 0; V
BAT
= V
SENSE
= V
SW
= 4.2V
Charging Terminated
CV Operation (Note 5)
V
NTC
Rising
V
NTC
Falling
% of threshold
Impedance to ground
V
NTC
= 0.8V
Rising
l
l
l
l
l
l
l
mV
mV
μA
μA
μA
nA
nA
1.25
0.27
250
47.5
1.15
1.36
0.29
20
500
50
1.2
120
–10
1.45
0.315
V
V
%
kΩ
52.5
1.25
μA
V
mV
nA
10mA Load
l
0.4
25
0.1
0.25
V
μA
V
l
3652fb
3
LT3652
ELECTRICAL CHARACTERISTICS
SYMBOL
t
TIMER
PARAMETER
Full Charge Cycle Timeout
Precondition Timeout
Timer Accuracy
f
O
DC
Operating Frequency
Duty Cycle Range
Continuous Operation
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 20V, Boost – SW = 4V, SHDN = 2V, V
FB
= 3.3V, C
TIMER
= 0.68μF.
CONDITIONS
MIN
TYP
3
22.5
–10
1
15
90
10
MAX
UNITS
hr
min
%
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 LT3652EDD is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization, and correlation with statistical process controls. The
LT3652IDD specifications are guaranteed over the full –40°C to 125°C
operating junction temperature range. High junction temperatures degrade
operating lifetimes.
Note 3:
V
IN
minimum voltages below the start threshold are only
supported if (V
BOOST
-V
SW
) > 2V.
Note 4:
This parameter is valid for programmed output battery float
voltages ≤ 4.2V. V
IN
operating range minimum is 0.75V above the
programmed output battery float voltage (V
BAT(FLT)
+ 0.75V). V
IN
Start
Voltage is 3.3V above the programmed output battery float voltage
(V
BAT(FLT)
+ 3.3V).
Note 5:
Output battery float voltage (V
BAT(FLT)
) programming resistor
divider equivalent resistance = 250k compensates for input bias current.
Note 6:
All V
FB
voltages measured through 250k series resistance.
Note 7:
V
SENSE(DC)
is reduced by thermal foldback as junction temperature
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