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参数资料
| 型号： | LTC4008EGN-1#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHARGER CTRLR 4A 20SSOP |
| 标准包装： | 55 |
| 功能： | 充电管理 |
| 电池化学： | 多化学 |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
LTC4008
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V DCIN = 20V, V BAT = 12V unless otherwise noted.
SYMBOL PARAMETER
DCIN Operating Range
CONDITIONS
MIN
6
TYP
MAX
28
UNITS
V
I Q
Operating Current
Charging Sum of Current from CLP, CLN, DCIN
3
5
mA
V TOL
Voltage Accuracy
BATMON Error (Note 5)
(Notes 2, 5)
Measured from BAT to BATMON,
l
–0.8
–1.0
0
35
0.8
1.0
80
%
%
mV
R LOAD = 100k
I TOL
Charge Current Accuracy (Note 3)
V CSP – V BAT Target = 100mV
l
–4
–5
4
5
%
%
Shutdown
Battery Leakage Current
DCIN = 0V (LTC4008 Only)
ACP/ SHDN = 0V
l
l
–10
20
35
10
μA
μA
UVLO
Undervoltage Lockout Threshold
Shutdown Threshold at ACP/ SHDN
DCIN Rising, V BAT = 0V
l
l
4.2
1
4.7
1.6
5.5
2.5
V
V
Operating Current in Shutdown
V SHDN = 0V, Sum of Current from CLP,
2
3
mA
CLN, DCIN
Current Sense Ampli?er, CA1
Input Bias Current Into BAT Pin
11.66
μA
CMSL
CA1/I 1 Input Common Mode Low
l
0
V
CMSH
V OS
CA1/I 1 Input Common Mode High
Input Voltage Offset
V DCIN ≤ 28V
l
–3.5
V CLN – 0.2
3.5
V
mV
Current Comparators I CMP and I REV
I TMAX
Maximum Current Sense Threshold (V CSP – V BAT ) V ITH = 2.5V
l
140
165
200
mV
I TREV
Reverse Current Threshold (V CSP – V BAT )
–30
mV
Current Sense Ampli?er, CA2
Transconductance
1
mmho
Source Current
Sink Current
Measured at I TH , V ITH = 1.4V
Measured at I TH , V ITH = 1.4V
–40
40
μA
μA
Current Limit Ampli?er
Transconductance
1.4
mmho
V CLP
Current Limit Threshold
l
93
100
107
mV
I CLN
CLN Input Bias Current
100
nA
Voltage Error Ampli?er, EA
Transconductance
1
mmho
V REF
Reference Voltage Used to Calculate V FLOAT
1.19
V
I BEA
Input Bias Current
Sink Current
Measured at I TH , V ITH = 1.4V
±4
36
±25
nA
μA
OVSD
Overvoltage Shutdown Threshold as a Percent of
l
102
107
110
%
Programmed Charger Voltage
4008fb
3
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