参数资料
型号: LT1511ISW#PBF
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC BATT CHRGR CONST I/V 3A24SOIC
标准包装: 32
功能: 充电管理
电池化学: 锂离子,镍镉,镍氢
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: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC
包装: 管件
LT1511
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V CC = 16V, V BAT = 8V, V MAX (maximum operating V CC ) = 28V.
No load on any outputs unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Voltage Amplifier VA
Transconductance (Note 3)
Output Source Current
OVP Input Bias Current
Output Current from 50 μ A to 500 μ A
V OVP = V REF + 10mV, V PROG = V REF + 10mV
At 0.75mA VA Output Current
At 0.75mA VA Output Current, T J > 90 ° C
0.25
1.1
– 15
0.6
± 3
1.3
± 10
25
mho
mA
nA
nA
Current Limit Amplifier CL1, 8V ≤ Input Common Mode
Turn-On Threshold
Transconductance
CLP Input Current
CLN Input Current
0.75mA Output Current
Output Current from 50 μ A to 500 μ A
0.75mA Output Current, V UV ≥ 0.4V
0.75mA Output Current V UV ≥ 0.4V
93
0.5
100
1
0.3
0.8
107
2
1
2
mV
mho
μ A
mA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Tested with Test Circuit 1.
Note 3: Tested with Test Circuit 2.
Note 4: A linear interpolation can be used for reference voltage
specification between 0 ° C and – 40 ° C.
TYPICAL PERFOR M A N CE CHARACTERISTICS
Thermally Limited Maximum
3.0
Charging Current
100
Efficiency of Figure 1 Circuit
8
I CC vs Duty Cycle
2.8
12.6V BATTERY
98
96
V IN = 16.5
V BAT = 8.4V
7
V CC = 16V
2.6
2.4
2.2
8.4V BATTERY
V IN ≥ 11V
4.2V BATTERY
V IN ≥ 8V
( θ JA =30 ° C/W)
T AMAX =60 ° C
T JMAX =125 ° C
16.8V BATTERY
94
92
90
88
86
84
82
CHARGER EFFICIENCY
INCLUDES LOSS
IN DIODE D3
6
5
4
3
2
1
0 ° C
25 ° C
125 ° C
2.0
5
10
15
20
25
30
80
0.2
0.6
1.0
1.4
1.8
2.2
2.6
3.0
0
0
10
20
30
40
50
60
70
80
4
INPUT VOLTAGE (V)
1511 ? TPC01
NOTE: FOR 4.2V AND 8.4V BATTERIES MAXIMUM
CHARGING CURRENT IS 3A FOR V IN – V BAT ≥ 3V
I BAT (A)
1511 ? TPC02
DUTY CYCLE (%)
1511 ? TPC03
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