參數(shù)資料
型號(hào)： LTC4008
廠商： Linear Technology Corporation
英文描述： 4A, High Efficiency, Standalone Li Battery Charger
中文描述： 第4A，高效，獨(dú)立鋰電池充電器
文件頁(yè)數(shù)： 4/20頁(yè)
文件大?。?/td> 241K
代理商： LTC4008
4
LTC4007
4007i
The
G
denotes specifications which apply over the full operating
temperature range (Note 4), otherwise specifications are at T
A
= 25
°
C. V
DCIN
= 20V, V
BAT
= 12V unless otherwise noted.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
See Test Circuit.
Note 3:
Does not include tolerance of current sense resistor or current
programming resistor.
Note 4:
The LTC4007E is guaranteed to meet performance specifications
from 0
°
C to 70
°
C. Specifications over the –40
°
C to 85
°
C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
ELECTRICAL CHARACTERISTICS
SYMBOL
V
OL
PARAMETER
Low Logic Level of ACP, CHG, FLAG, LOBAT,
I
CL
, FAULT
High Logic Level of CHG, LOBAT, I
CL
Off State Leakage Current of ACP, FLAG, FAULT
Pull-Up Current on CHG, LOBAT, I
CL
Timer Defeat Threshold at CHG
Programming Inputs (CHEM and 3C4C)
V
IH
High Logic Level
V
IL
Low Logic Level
I
PI
Pull-Up Current
Oscillator
f
OSC
Regulator Switching Frequency
f
MIN
Regulator Switching Frequency in Drop Out
DC
MAX
Regulator Maximum Duty Cycle
Gate Drivers (TGATE, BGATE)
V
TGATE
High (V
CLN
– V
TGATE
)
V
BGATE
High
V
TGATE
Low (V
CLN
– V
TGATE
)
V
BGATE
Low
TGATE Transition Time
TGTR
TGATE Rise Time
TGTF
TGATE Fall Time
BGATE Transition Time
BGTR
BGATE Rise Time
BGTF
BGATE Fall Time
V
TGATE
at Shutdown (V
CLN
– V
TGATE
)
V
BGATE
at Shutdown
CONDITIONS
I
OL
= 100
μ
A
MIN
TYP
MAX
0.5
UNITS
G
V
V
OH
I
OFF
I
PO
I
OH
= –1
μ
A
V
OH
= 3V
V = 0V
G
2.7
–1
V
1
μ
A
μ
A
V
–10
1
G
3.3
V
V
G
1
V = 0V
–14
μ
A
255
20
98
300
25
99
345
kHz
kHz
%
Duty Cycle
≥
98%
V
CSP
= V
BAT
I
TGATE
= –1mA
C
LOAD
= 3000pF
C
LOAD
= 3000pF
I
BGATE
= 1mA
50
10
10
50
mV
4.5
4.5
5.6
5.6
V
V
mV
C
LOAD
= 3000pF, 10% to 90%
C
LOAD
= 3000pF, 10% to 90%
50
50
110
100
ns
ns
C
LOAD
= 3000pF, 10% to 90%
C
LOAD
= 3000pF, 10% to 90%
I
TGATE
= –1
μ
A, DCIN = 0V, CLN = 12V
I
BGATE
= 1
μ
A, DCIN = 0V, CLN = 12V
40
40
90
80
100
100
ns
ns
mV
mV
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