参数资料
型号: LT1619ES8#PBF
厂商: Linear Technology
文件页数: 3/20页
文件大小: 0K
描述: IC REG CTRLR PWM CM 8-SOIC
标准包装: 100
PWM 型: 电流模式
输出数: 1
频率 - 最大: 500kHz
占空比: 92%
电源电压: 1.9 V ~ 18 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
产品目录页面: 1328 (CN2011-ZH PDF)
LT1619
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at T A = 25 ° C.
V IN = V DRV = 2.5V, V S/S = V IN , COMP open, V SENSE = 0V unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Current Sense Input Current
V SENSE = 0V
q
– 90
– 120
– 150
μ A
Current Limit Delay
150
ns
Driver Output Rise Time
Driver Output Fall Time
C L = 3300pF
C L = 3300pF
30
35
ns
ns
Driver Output High Level
I OUT = – 20mA
I OUT = – 200mA
V DRV – 0.6
V DRV – 1.6
V DRV – 0.35
V DRV – 1.2
V
V
Driver Output Low Level
Shutdown Driver Output Level
Idle Mode Driver Output Level
I OUT = 20mA
I OUT = 200mA
V S/S = 0V, I OUT = 20mA
V S/S = V IN , V FB = 1.5V, I OUT = 20mA
100
0.5
100
100
200
0.7
200
200
mV
V
mV
mV
S/S Pin Current
Operating Supply Current
V S/S = V IN
V S/S = 0V
V FB = 1V
9
4
–2
μ A
μ A
mA
Quiescent Supply Current
Shutdown Supply Current
Shutdown Threshold
Shutdown Delay
V S/S = V IN , V FB = 1.5V
V S/S = 0V
V S/S = 0V, V IN = 18V, T A = 85 ° C
q
0.45
12
140
15
40
17
220
19
1.2
33
μ A
μ A
μ A
V
μ s
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: The LT1619E is guaranteed to meet performance specifications
from 0 ° C to 70 ° C. Specifications over the – 40 ° C to 85 ° C operating
Note 3: T J is calculated from the ambient temperature T A , the power
dissipation P D and the thermal resistance θ JA of the package according to
the formula:
T J = T A + P D ? θ JA
temperature range are assured by design, characterization and correlation
with statistical process controls.
TYPICAL PERFOR A CE CHARACTERISTICS
Bandgap Voltage vs Temperature
I S/S vs V S/S
S/S Pin Current vs Temperature
1.245
1.243
V IN = 2.5V
5
4
T A = –40 ° C
5
4
1.241
1.239
1.237
1.235
1.233
3
2
1
0
T A = 25 ° C
T A = 85 ° C
3
2
1
0
V S/S = 2.5 V
1.231
1.229
1.227
–1
–2
–1
–2
V S/S = 0V
1.225
–40 –20
0
20
40
60
80
100 120
–3
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
–3
–40 –20
0
20
40
60
80
100 120
TEMPERATURE ( ° C)
1619 G01
V S/S (V)
1619 G02
TEMPERATURE ( ° C)
1619 G03
1619fa
3
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