參數(shù)資料
型號(hào)： LTC4008EGN-1#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 4A, High Efficiency, Multi-Chemistry Battery Charger; Package: SSOP; No of Pins: 20; Temperature Range: -40°C to +125°C
中文描述： BATTERY CHARGE CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO20
封裝： 0.150 INCH, LEAD FREE, PLASTIC, SSOP-20
文件頁(yè)數(shù)： 19/24頁(yè)
文件大小： 221K
代理商： LTC4008EGN-1#PBF
LTC4008
4
4008fb
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VDCIN = 20V, VBAT = 12V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input P-Channel FET Driver (INFET) (LTC4008 Only)
DCIN Detection Threshold (VDCIN – VCLP)
DCIN Voltage Ramping Up
from VCLP – 0.1V
l
0
0.17
0.25
V
Forward Regulation Voltage (VDCIN – VCLP)
l
25
50
mV
Reverse Voltage Turn-Off Voltage (VDCIN – VCLP) DCIN Voltage Ramping Down
l
–60
–25
mV
INFET “On” Clamping Voltage (VCLP – VINFET)IINFET = 1μA
l
5
5.8
6.5
V
INFET “Off” Clamping Voltage (VCLP – VINFET)IINFET = –25μA
0.25
V
Thermistor
NTCVR
Reference Voltage During Sample Time
4.5
V
High Threshold
VNTC Rising
l NTCVR
0.48
NTCVR
0.5
NTCVR
0.52
V
Low Threshold
VNTC Falling
l NTCVR
0.115
NTCVR
0.125
NTCVR
0.135
V
Thermistor Disable Current
VNTC ≤ 10V
10
μA
Indicator Outputs (ACP/SHDN, FLAG, ICL, FAULT
C10TOL
FLAG (C/10) Accuracy
Voltage Falling at PROG
l
0.375
0.397
0.420
V
ICL Threshold Accuracy
VCLP – VCLN
83
93
105
mV
VOL
Low Logic Level of ACP/SHDN, FLAG, ICL, FAULT IOL = 100μA
0.5
V
VOH
High Logic Level of ACP/SHDN, ICL
IOH = –1μA
l
2.7
V
IOFF
Off State Leakage Current of FLAG, FAULT
VOH = 3V
–1
1
μA
IPO
Pull-Up Current on ACP/SHDN, ICL
V = 0V
–10
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 (VCLP – VTGATE)ITGATE = –1mA
50
mV
VBGATE High
CLOAD = 3000pF
5.6
10
V
VTGATE Low (VCLP – VTGATE)CLOAD = 3000pF
5.6
10
V
VBGATE Low
IBGATE = 1mA
50
mV
TGTR
TGTF
TGATE Transition Time
TGATE Rise Time
TGATE Fall Time
CLOAD = 3000pF, 10% to 90%
50
110
100
ns
BGTR
BGTF
BGATE Transition Time
BGATE Rise Time
BGATE Fall Time
CLOAD = 3000pF, 10% to 90%
40
90
80
ns
VTGATE at Shutdown (VCLP – VTGATE)ITGATE = –1μA, DCIN = 0V, CLP = 12V
100
mV
VBGATE at Shutdown
IBGATE = 1μA, DCIN = 0V, CLP = 12V
100
mV
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 LTC4008E is guaranteed to meet performance specications
from 0°C to 70°C. Specications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 5: Voltage accuracy includes BATMON error and voltage reference
error. Does not include error of external resistor divider.
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