参数资料
型号: LT1511ISW
厂商: Linear Technology
文件页数: 3/16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,
R S2 = R S3 = 200 ? (see Block Diagram), V CLN = V CC . No load on any outputs unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Overall
Boost Pin Current
V CC = 20V, V BOOST = 0V
V CC = 28V, V BOOST = 0V
2V ≤ V BOOST – V CC < 8V (Switch ON)
8V ≤ V BOOST – V CC ≤ 25V (Switch ON)
0.1
0.25
6
8
10
20
9
12
μ A
μ A
mA
mA
Switch
Switch ON Resistance
? I BOOST / ? I SW During Switch ON
Switch OFF Leakage Current
8V ≤ V CC ≤ V MAX , I SW = 3A,
V BOOST – V SW ≥ 2V
V BOOST = 24V, I SW ≤ 3A
V SW = 0V, V CC ≤ 20V
20V < V CC ≤ 28V
q
q
q
0.15
25
2
4
0.25
35
100
200
?
mA/A
μ A
μ A
Minimum I PROG for Switch ON
Minimum I PROG for Switch OFF at V PROG ≤ 1V
Maximum V BAT for Switch ON
q
q
q
2
1
4
2.4
20
V CC – 2
μ A
mA
V
Current Sense Amplifier CA1 Inputs (Sense, BAT)
Input Bias Current
q
– 50
– 125
μ A
Input Common Mode Low
Input Common Mode High
q
q
– 0.25
V CC – 2
V
V
SPIN Input Current
– 100
– 200
μ A
Reference
Reference Voltage (Note 3)
R PROG = 4.93k, Measured at OVP with
VA Supplying I PROG and Switch OFF
2.453
2.465
2.477
V
Reference Voltage
All Conditions of V CC , T J > 0 ° C
T J < 0 ° C (Note 4)
q
q
2.441
2.43
2.489
2.489
V
V
Oscillator
Switching Frequency
180
200
220
kHz
Switching Frequency
All Conditions of V CC , T J > 0 ° C
T J < 0 ° C
q
q
170
160
200
230
230
kHz
kHz
Maximum Duty Cycle
q
85
%
T A = 25 ° C
90
93
%
Current Amplifier CA2
Transconductance
Maximum V C for Switch OFF
I VC Current (Out of Pin)
V C = 1V, I VC = ± 1 μ A
V C ≥ 0.6V
q
150
250
550
0.6
100
μ mho
V
μ A
V C < 0.45V
3
mA
3
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