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LTC4100 数据表(PDF) 3 Page - Linear Technology

部件名 LTC4100
功能描述  Smart Battery Charger Controller
PDF  24 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC4100 数据表(HTML) 3 Page - Linear Technology

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LTC4100
3
sn4100 4100is
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDCIN = 20V, VDD = 3.3V, VBAT = 12V unless otherwise noted. (Note 4)
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Current Comparators ICMP and IREV
ITMAX
Maximum Current Sense Threshold (VCSP-VBAT)VITH = 2.4V
q
140
165
200
mV
ITREV
Reverse Current Threshold (VCSP-VBAT)– 30
mV
Current Sense Amplifier, CA2
Transconductance
1
mmho
Source Current
Measured at ITH, VITH = 1.4V
–40
µA
Sink Current
Measured at ITH, VITH = 1.4V
40
µA
Current Limit Amplifier
Transconductance
1.5
mmho
VCLP
Current Limit Threshold
q
93
100
107
mV
ICLP
CLP Input Bias Current
100
nA
Voltage Error Amplifier, EA
Transconductance
1
mmho
Sink Current
Measured at ITH, VITH = 1.4V
36
µA
OVSD
Overvoltage Shutdown Threshold as a Percent
q
102
107
110
%
of Programmed Charger Voltage
Input P-Channel FET Driver (INFET)
DCIN DetectionThreshold (VDCIN-VCLP)
DCIN Voltage Ramping Up
q
0.0
0.17
0.25
V
from VCLP-0.05V
Forward Regulation Voltage (VDCIN-VCLP)
q
25
50
mV
Reverse Voltage Turn-Off Voltage (VDCIN-VCLP)
q
–60
–25
mV
INFET “ON” Clamping Voltage (VDCIN-VINFET)IINFET = 1µA
q
5
5.8
6.5
V
INFET “OFF” Clamping Voltage (VDCIN-VINFET)IINFET = –25µA
0.25
V
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
IBGATE = –1mA
5.6
10
V
VTGATE Low (VCLN-VTGATE)ITGATE = 1mA
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
100
mV
VBGATE at Shutdown
ITGATE = 1µA
100
mV



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