lt3651-4.2 Linear Technology Corporation, lt3651-4.2 Datasheet - Page 3

• Manufacturer Part Number: lt3651-4.2
• Description: Monolithic 4a High Voltage Li-ion Battery Charger Features
• Manufacturer: Linear Technology Corporation

elecTrical characTerisTics
PARAMETER
Operating V
Top Switch On Voltage
Bottom Switch On Voltage
BOOST Supply Current
BOOST Switch Drive
Precondition Current Sense Voltage
Input Current Limit Voltage
CLP Input Bias Current
CLN Input Bias Current
I
System Current Limit Programming Gain
Maximum Charge Current Sense Voltage
C/10 Trigger Sense Voltage
BAT Input Bias Current
SENSE Input Bias Current
RNG/SS Bias Current
Charge Current Limit Programming Gain
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
TIMER Charge/Discharge Current
TIMER Disable Threshold
Full Charge Cycle Time-Out
Precondition Timeout
Timer Accuracy
Switcher Operating Frequency, f
Minimum SW On-Time, t
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 LT3651 is tested under pulse loaded conditions such that
T
from 0°C to 85°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
junction temperature range, otherwise specifications are at T
C
LIM
J
TIMER
= T
Bias Current
A
. The LT3651E is guaranteed to meet performance specifications
= 0.68µF , R
IN
Supply Current
T
= 50k, CLP = CLN = V
ON(MIN)
O
IN
, BOOST – SW = 4V.
CONDITIONS
CC/CV Mode, Top Switch On, I
Standby Mode
Shutdown (SHDN = 0)
V
V
Switch High, I
I
V
V
V
V
V
Charging Terminated
Charging Terminated
V
V
V
% of Threshold
Minimum External Impedance to GND
V
V
V
R
R
BOOST
IN
SW
SENSE
CLP
ILIM
SENSE
SENSE
RNG/SS
NTC
NTC
NTC
SHDN
CHRG
T
T
= 50kΩ
= 250kΩ
– V
, I
– V
Rising
Falling
= 0.75V
/(V
SW
Rising
, V
/I
SW
– V
– V
– V
SW
/(V
CLP
CLN
FAULT
= 4A
, I
, I
BAT
BAT
BAT
SENSE
– V
SW
, I
SW
SW
LIM
, V
, V
, V
= 4A
The
CLN
= 4A
– V
ACPR
= 0, 2.5 < (V
BAT
BAT
A
Open
), V
= 25°C (Note 2). V
= 2.5
l
BAT
= 3.5, V
, Load = 10mA
ILIM
denotes the specifications which apply over the full operating
), V
= 0.5V
RNG/SS
characterization and correlation with statistical process controls. The
LT3651I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The junction temperature (T
the ambient temperature (T
according to the formula:
where θ
RNG/SS
BOOST
SW
T
J
= T
= 0
= 0.5V
> 1.1V
JA
– V
A
(in °C/W) is the package thermal impedance.
+ P
SW
IN
D
) < 4.5
• θ
= 20V, SHDN = 2V, SENSE = BAT = V
JA
l
l
l
l
l
l
l
l
l
l
l
l
l
l
A
in °C) and power dissipation (P
1.25
0.27
46.5
1.16
MIN
150
–13
5.0
8.5
0.1
70
43
88
44
11.5
10.8
1.36
0.29
1.20
0.25
22.5
TYP
480
140
120
470
–10
250
150
8.6
8.6
0.1
0.1
1.1
80
17
40
25
14
95
36
50
95
50
10
50
95
25
3
LT3651-4.2
J
in °C) is calculated from
MAX
12.3
12.5
1.45
0.31
53.5
1.23
0.45
115
103
57
56
13
BAT(FLT)
1
1
D
in Watts)
,
Minute
UNITS
365142f
mA/A

Hour
MHz
kHz
mA
mV
mV
mA
mV
mV
V/V
mV
mV
V/V
mV
kΩ
µA
µA
nA
µA
µA
µA
µA
µA
µA
nA
µA
ns
%
%
V
V
V
V
V