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LTC4007 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC4007
Description  4A, High Efficiency, Standalone Li-Ion Battery Charger
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4007 Datasheet(HTML) 4 Page - Linear Technology

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4
LTC4007
4007fa
The
denotes specifications which apply over the full operating
temperature range (Note 4), otherwise specifications are at TA = 25°C. VDCIN = 20V, VBAT = 12V unless otherwise noted.
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: 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
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VOL
Low Logic Level of ACP, CHG, FLAG, LOBAT,
IOL = 100µA
0.5
V
ICL, FAULT
VOH
High Logic Level of CHG, LOBAT, ICL
IOH = –1µA
2.7
V
IOFF
Off State Leakage Current of ACP, FLAG, FAULT
VOH = 3V
–1
1
µA
IPO
Pull-Up Current on CHG, LOBAT, ICL
V = 0V
–10
µA
Timer Defeat Threshold at CHG
1
V
Programming Inputs (CHEM and 3C4C)
VIH
High Logic Level
3.3
V
VIL
Low Logic Level
1V
IPI
Pull-Up Current
V = 0V
– 14
µA
Oscillator
fOSC
Regulator Switching Frequency
255
300
345
kHz
fMIN
Regulator Switching Frequency in Drop Out
Duty Cycle
≥ 98%
20
25
kHz
DCMAX
Regulator Maximum Duty Cycle
VCSP = VBAT
98
99
%
Gate Drivers (TGATE, BGATE)
VTGATE High (VCLN – VTGATE)ITGATE = –1mA
50
mV
VBGATE High
CLOAD = 3000pF
4.5
5.6
10
V
VTGATE Low (VCLN – VTGATE)CLOAD = 3000pF
4.5
5.6
10
V
VBGATE Low
IBGATE = 1mA
50
mV
TGATE Transition Time
TGTR
TGATE Rise Time
CLOAD = 3000pF, 10% to 90%
50
110
ns
TGTF
TGATE Fall Time
CLOAD = 3000pF, 10% to 90%
50
100
ns
BGATE Transition Time
BGTR
BGATE Rise Time
CLOAD = 3000pF, 10% to 90%
40
90
ns
BGTF
BGATE Fall Time
CLOAD = 3000pF, 10% to 90%
40
80
ns
VTGATE at Shutdown (VCLN – VTGATE)ITGATE = –1µA, DCIN = 0V, CLN = 12V
100
mV
VBGATE at Shutdown
IBGATE = 1µA, DCIN = 0V, CLN = 12V
100
mV


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