参数资料
型号: LT1111IS8#TRPBF
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC REG BUCK BOOST INV ADJ 8SOIC
标准包装: 2,500
类型: 降压(降压),升压(升压),反相
输出类型: 可调式
输出数: 1
输出电压: 可调
输入电压: 2 V ~ 30 V
频率 - 开关: 72kHz
电流 - 输出: 400mA
同步整流器:
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
供应商设备封装: 8-SOIC
LT1111
TYPICAL PERFOR A CE C HARA C TERISTICS
100
90
80
70
60
50
Oscillator Frequency
75
74
73
72
71
70
69
68
Oscillator Frequency
10
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
Switch ON Time
40
–50
–25
0
25
50
75
100
125
67
0
3
6
9 12 15 18 21 24 27 30
5.0
–50
–25
0 25
50 75
100
125
60
TEMPERATURE ( ° C)
Duty Cycle
LT1111 ? TPC01
1.0
INPUT VOLTAGE (V)
Saturation Voltage
Step-Up Mode
LT1111 ? TPC02
1.4
TEMPERATURE ( ° C)
Saturation Voltage
Step-Up Mode
LT111 ? TPC03
58
56
0.9
0.8
V IN = 3V
I SW = 650mA
1.2
V IN = 2V
V IN = 3V
54
0.7
1.0
52
50
48
46
44
42
0.6
0.5
0.4
0.3
0.2
0.1
0.8
0.6
0.4
0.2
V IN = 5V
40
–50
–25
0 25
50 75
100
125
0
–50
– 25
0 25
50 75
100
125
0
0
0.2
0.4 0.6
0.8
1.0
1.2
1.4
1.6
TEMPERATURE ( ° C)
Switch ON Voltage
LT1111 ? TPC04
TEMPERATURE ( ° C)
Switch ON Voltage
LT1111 ? TPC05
SWITCH CURRENT (A)
LT1111 ? TPC06
Minimum/Maximum Frequency
2.00
1.75
1.50
Step-Down Mode
V IN = 12V
I SW = 650mA
1.4
1.2
1.0
Step-Down Mode
V IN = 12V
100
90
80
vs ON Time
0 ° C ≤ T A ≤ 70 ° C
0.8
1.25
0.6
70
1.00
0.75
0.4
0.2
60
50
–55 ° C ≤ T A ≤ 125 ° C
0.50
–50
–25
0 25
50 75
100
125
0
0
0.2
0.4 0.6
0.8
1.0
40
4
5
6 7
8 9
10
11
12
TEMPERATURE ( ° C)
LT1111 ? TPC07
SWITCH CURRENT (A)
LT1111 ? TPC08
SWITCH ON TIME ( μ s)
LT1111 ? TPC09
1111fd
4
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