LTC4100 Linear Technology, LTC4100 Datasheet - Page 3

• Manufacturer Part Number: LTC4100
• Description: Smart Battery Charger Controller
• Manufacturer: Linear Technology

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
Current Comparators I
I
I
Current Sense Amplifier, CA2
Current Limit Amplifier
V
I
Voltage Error Amplifier, EA
OVSD
Input P-Channel FET Driver (INFET)
Oscillator
f
f
DC
Gate Drivers (TGATE, BGATE)
TGTR
TGTF
BGTR
BGTF
TMAX
TREV
CLP
OSC
MIN
CLP
MAX
PARAMETER
Maximum Current Sense Threshold (V
Reverse Current Threshold (V
Transconductance
Source Current
Sink Current
Transconductance
Current Limit Threshold
CLP Input Bias Current
Transconductance
Sink Current
Overvoltage Shutdown Threshold as a Percent
of Programmed Charger Voltage
DCIN DetectionThreshold (V
Forward Regulation Voltage (V
Reverse Voltage Turn-Off Voltage (V
INFET “ON” Clamping Voltage (V
INFET “OFF” Clamping Voltage (V
Regulator Switching Frequency
Regulator Switching Frequency in Drop Out
Regulator Maximum Duty Cycle
V
V
V
V
TGATE Transition Time
TGATE Rise Time
TGATE Fall Time
BGATE Transition Time
BGATE Rise Time
BGATE Fall Time
V
V
TGATE
BGATE
TGATE
BGATE
TGATE
BGATE
CMP
and I
High (V
Low (V
at Shutdown (V
High
Low
at Shutdown
REV
CLN
CLN
-V
-V
TGATE
TGATE
CLN
)
)
-V
DCIN
TGATE
CSP
DCIN
-V
DCIN
-V
DCIN
)
CLP
-V
BAT
DCIN
CLP
-V
-V
)
CSP
)
A
INFET
INFET
)
-V
= 25 C. V
-V
CLP
BAT
)
)
)
The
)
CONDITIONS
V
Measured at I
Measured at I
Measured at I
DCIN Voltage Ramping Up
from V
I
I
Duty Cycle 98%
V
I
I
I
I
C
C
C
C
I
I
DCIN
INFET
INFET
TGATE
BGATE
TGATE
BGATE
TGATE
TGATE
ITH
CSP
LOAD
LOAD
LOAD
LOAD
denotes the specifications which apply over the full operating
= 2.4V
= 20V, V
= V
= 1 A
= –25 A
= 3000pF, 10% to 90%
= 3000pF, 10% to 90%
= 3000pF, 10% to 90%
= 3000pF, 10% to 90%
CLP
= –1mA
= –1mA
= 1mA
= 1mA
= –1 A
= 1 A
BAT
-0.05V
TH
TH
TH,
DD
, V
, V
V
ITH
ITH
ITH
= 3.3V, V
= 1.4V
= 1.4V
= 1.4V
BAT
= 12V unless otherwise noted. (Note 4)
MIN
140
102
–60
255
0.0
93
20
98
5
0.17
TYP
– 30
–40
165
100
100
107
–25
300
1.5
5.8
5.6
5.6
40
40
40
36
25
25
99
50
50
1
1
LTC4100
MAX
0.25
0.25
200
107
110
345
110
100
100
100
6.5
50
50
10
10
50
90
80
sn4100 4100is
UNITS
mmho
mmho
mmho
3
kHz
kHz
mV
mV
mV
mV
mV
mV
mV
mV
mV
nA
ns
ns
ns
ns
%
%
A
A
A
V
V
V
V
V